style(compiler): reformat of codebase with new clang-format version (#36520)

This commit reformats the packages/compiler tree using the new version of
clang-format.

PR Close #36520

packages/compiler/src/aot/compiler.ts

@@ -11,7 +11,7 @@ import {CompilerConfig} from '../config';
 import {ConstantPool} from '../constant_pool';
 import {ViewEncapsulation} from '../core';
 import {MessageBundle} from '../i18n/message_bundle';
-import {Identifiers, createTokenForExternalReference} from '../identifiers';
+import {createTokenForExternalReference, Identifiers} from '../identifiers';
 import {InjectableCompiler} from '../injectable_compiler';
 import {CompileMetadataResolver} from '../metadata_resolver';
 import {HtmlParser} from '../ml_parser/html_parser';
@@ -31,9 +31,9 @@ import {SummaryResolver} from '../summary_resolver';
 import {BindingParser} from '../template_parser/binding_parser';
 import {TemplateAst} from '../template_parser/template_ast';
 import {TemplateParser} from '../template_parser/template_parser';
-import {OutputContext, ValueVisitor, error, newArray, syntaxError, visitValue} from '../util';
+import {error, newArray, OutputContext, syntaxError, ValueVisitor, visitValue} from '../util';
 import {TypeCheckCompiler} from '../view_compiler/type_check_compiler';
-import {ViewCompileResult, ViewCompiler} from '../view_compiler/view_compiler';
+import {ViewCompiler, ViewCompileResult} from '../view_compiler/view_compiler';
 
 import {AotCompilerHost} from './compiler_host';
 import {AotCompilerOptions} from './compiler_options';
@@ -46,7 +46,11 @@ import {StaticSymbolResolver} from './static_symbol_resolver';
 import {createForJitStub, serializeSummaries} from './summary_serializer';
 import {ngfactoryFilePath, normalizeGenFileSuffix, splitTypescriptSuffix, summaryFileName, summaryForJitFileName} from './util';
 
-const enum StubEmitFlags { Basic = 1 << 0, TypeCheck = 1 << 1, All = TypeCheck | Basic }
+const enum StubEmitFlags {
+  Basic = 1 << 0,
+  TypeCheck = 1 << 1,
+  All = TypeCheck | Basic
+}
 
 export class AotCompiler {
   private _templateAstCache =
@@ -64,7 +68,9 @@ export class AotCompiler {
       private _summaryResolver: SummaryResolver<StaticSymbol>,
       private _symbolResolver: StaticSymbolResolver) {}
 
-  clearCache() { this._metadataResolver.clearCache(); }
+  clearCache() {
+    this._metadataResolver.clearCache();
+  }
 
   analyzeModulesSync(rootFiles: string[]): NgAnalyzedModules {
     const analyzeResult = analyzeAndValidateNgModules(
@@ -123,7 +129,7 @@ export class AotCompiler {
     const fileSuffix = normalizeGenFileSuffix(splitTypescriptSuffix(file.fileName, true)[1]);
     file.directives.forEach((dirSymbol) => {
       const compMeta =
-          this._metadataResolver.getNonNormalizedDirectiveMetadata(dirSymbol) !.metadata;
+          this._metadataResolver.getNonNormalizedDirectiveMetadata(dirSymbol)!.metadata;
       if (!compMeta.isComponent) {
         return;
       }
@@ -149,7 +155,8 @@ export class AotCompiler {
     if (genFileName.endsWith('.ngfactory.ts')) {
       if (!originalFileName) {
         throw new Error(
-            `Assertion error: require the original file for .ngfactory.ts stubs. File: ${genFileName}`);
+            `Assertion error: require the original file for .ngfactory.ts stubs. File: ${
+                genFileName}`);
       }
       const originalFile = this._analyzeFile(originalFileName);
       this._createNgFactoryStub(outputCtx, originalFile, StubEmitFlags.Basic);
@@ -157,7 +164,8 @@ export class AotCompiler {
       if (this._options.enableSummariesForJit) {
         if (!originalFileName) {
           throw new Error(
-              `Assertion error: require the original file for .ngsummary.ts stubs. File: ${genFileName}`);
+              `Assertion error: require the original file for .ngsummary.ts stubs. File: ${
+                  genFileName}`);
         }
         const originalFile = this._analyzeFile(originalFileName);
         _createEmptyStub(outputCtx);
@@ -319,10 +327,10 @@ export class AotCompiler {
         const html = compMeta.template !.template !;
         // Template URL points to either an HTML or TS file depending on whether
         // the file is used with `templateUrl:` or `template:`, respectively.
-        const templateUrl = compMeta.template !.templateUrl !;
+        const templateUrl = compMeta.template !.templateUrl!;
         const interpolationConfig =
             InterpolationConfig.fromArray(compMeta.template !.interpolation);
-        errors.push(...messageBundle.updateFromTemplate(html, templateUrl, interpolationConfig) !);
+        errors.push(...messageBundle.updateFromTemplate(html, templateUrl, interpolationConfig)!);
       });
     });
 
@@ -342,7 +350,7 @@ export class AotCompiler {
       if (!contextMap.has(fileName)) {
         contextMap.set(fileName, this._createOutputContext(fileName));
       }
-      return contextMap.get(fileName) !;
+      return contextMap.get(fileName)!;
     };
 
     files.forEach(
@@ -381,13 +389,13 @@ export class AotCompiler {
     directives.forEach(directiveType => {
       const directiveMetadata = this._metadataResolver.getDirectiveMetadata(directiveType);
       if (directiveMetadata.isComponent) {
-        const module = ngModuleByPipeOrDirective.get(directiveType) !;
+        const module = ngModuleByPipeOrDirective.get(directiveType)!;
         module ||
-            error(
+            error(`Cannot determine the module for component '${
-                `Cannot determine the module for component '${identifierName(directiveMetadata.type)}'`);
+                identifierName(directiveMetadata.type)}'`);
 
-        let htmlAst = directiveMetadata.template !.htmlAst !;
+        let htmlAst = directiveMetadata.template !.htmlAst!;
-        const preserveWhitespaces = directiveMetadata !.template !.preserveWhitespaces;
+        const preserveWhitespaces = directiveMetadata!.template !.preserveWhitespaces;
 
         if (!preserveWhitespaces) {
           htmlAst = removeWhitespaces(htmlAst);
@@ -412,7 +420,9 @@ export class AotCompiler {
         const pipes = module.transitiveModule.pipes.map(
             pipe => this._metadataResolver.getPipeSummary(pipe.reference));
 
-        pipes.forEach(pipe => { pipeTypeByName.set(pipe.name, pipe.type.reference); });
+        pipes.forEach(pipe => {
+          pipeTypeByName.set(pipe.name, pipe.type.reference);
+        });
 
         compileR3Component(
             context, directiveMetadata, render3Ast, this.reflector, hostBindingParser,
@@ -484,8 +494,8 @@ export class AotCompiler {
       }
       const ngModule = ngModuleByPipeOrDirective.get(dirType);
       if (!ngModule) {
-        throw new Error(
+        throw new Error(`Internal Error: cannot determine the module for component ${
-            `Internal Error: cannot determine the module for component ${identifierName(compMeta.type)}!`);
+            identifierName(compMeta.type)}!`);
       }
 
       // compile styles
@@ -524,27 +534,27 @@ export class AotCompiler {
                                 .map(symbol => this._symbolResolver.resolveSymbol(symbol));
     const typeData: {
       summary: CompileTypeSummary,
-      metadata: CompileNgModuleMetadata | CompileDirectiveMetadata | CompilePipeMetadata |
+      metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|CompilePipeMetadata|
       CompileTypeMetadata
     }[] =
         [
           ...ngModules.map(
               meta => ({
-                summary: this._metadataResolver.getNgModuleSummary(meta.type.reference) !,
+                summary: this._metadataResolver.getNgModuleSummary(meta.type.reference)!,
-                metadata: this._metadataResolver.getNgModuleMetadata(meta.type.reference) !
+                metadata: this._metadataResolver.getNgModuleMetadata(meta.type.reference)!
               })),
           ...directives.map(ref => ({
-                              summary: this._metadataResolver.getDirectiveSummary(ref) !,
+                              summary: this._metadataResolver.getDirectiveSummary(ref)!,
-                              metadata: this._metadataResolver.getDirectiveMetadata(ref) !
+                              metadata: this._metadataResolver.getDirectiveMetadata(ref)!
                             })),
           ...pipes.map(ref => ({
-                         summary: this._metadataResolver.getPipeSummary(ref) !,
+                         summary: this._metadataResolver.getPipeSummary(ref)!,
-                         metadata: this._metadataResolver.getPipeMetadata(ref) !
+                         metadata: this._metadataResolver.getPipeMetadata(ref)!
                        })),
           ...injectables.map(
               ref => ({
-                summary: this._metadataResolver.getInjectableSummary(ref.symbol) !,
+                summary: this._metadataResolver.getInjectableSummary(ref.symbol)!,
-                metadata: this._metadataResolver.getInjectableSummary(ref.symbol) !.type
+                metadata: this._metadataResolver.getInjectableSummary(ref.symbol)!.type
               }))
         ];
     const forJitOutputCtx = this._options.enableSummariesForJit ?
@@ -621,7 +631,7 @@ export class AotCompiler {
             .toDeclStmt(
                 o.importType(
                     Identifiers.ComponentFactory,
-                    [o.expressionType(outputCtx.importExpr(compMeta.type.reference)) !],
+                    [o.expressionType(outputCtx.importExpr(compMeta.type.reference))!],
                     [o.TypeModifier.Const]),
                 [o.StmtModifier.Final, o.StmtModifier.Exported]));
   }
@@ -648,15 +658,15 @@ export class AotCompiler {
       directiveIdentifiers: CompileIdentifierMetadata[]):
       {template: TemplateAst[], pipes: CompilePipeSummary[]} {
     if (this._templateAstCache.has(compMeta.type.reference)) {
-      return this._templateAstCache.get(compMeta.type.reference) !;
+      return this._templateAstCache.get(compMeta.type.reference)!;
     }
-    const preserveWhitespaces = compMeta !.template !.preserveWhitespaces;
+    const preserveWhitespaces = compMeta!.template !.preserveWhitespaces;
     const directives =
         directiveIdentifiers.map(dir => this._metadataResolver.getDirectiveSummary(dir.reference));
     const pipes = ngModule.transitiveModule.pipes.map(
         pipe => this._metadataResolver.getPipeSummary(pipe.reference));
     const result = this._templateParser.parse(
-        compMeta, compMeta.template !.htmlAst !, directives, pipes, ngModule.schemas,
+        compMeta, compMeta.template !.htmlAst!, directives, pipes, ngModule.schemas,
         templateSourceUrl(ngModule.type, compMeta, compMeta.template !), preserveWhitespaces);
     this._templateAstCache.set(compMeta.type.reference, result);
     return result;
@@ -664,8 +674,7 @@ export class AotCompiler {
 
   private _createOutputContext(genFilePath: string): OutputContext {
     const importExpr =
-        (symbol: StaticSymbol, typeParams: o.Type[] | null = null,
+        (symbol: StaticSymbol, typeParams: o.Type[]|null = null, useSummaries: boolean = true) => {
-         useSummaries: boolean = true) => {
           if (!(symbol instanceof StaticSymbol)) {
             throw new Error(`Internal error: unknown identifier ${JSON.stringify(symbol)}`);
           }
@@ -710,7 +719,7 @@ export class AotCompiler {
       stylesheetMetadata: CompileStylesheetMetadata, isShimmed: boolean,
       fileSuffix: string): GeneratedFile {
     const outputCtx = this._createOutputContext(
-        _stylesModuleUrl(stylesheetMetadata.moduleUrl !, isShimmed, fileSuffix));
+        _stylesModuleUrl(stylesheetMetadata.moduleUrl!, isShimmed, fileSuffix));
     const compiledStylesheet =
         this._styleCompiler.compileStyles(outputCtx, compMeta, stylesheetMetadata, isShimmed);
     _resolveStyleStatements(this._symbolResolver, compiledStylesheet, isShimmed, fileSuffix);
@@ -748,8 +757,8 @@ export class AotCompiler {
         return allLazyRoutes;
       }
       seenRoutes.add(symbol);
-      const lazyRoutes = listLazyRoutes(
+      const lazyRoutes =
-          self._metadataResolver.getNgModuleMetadata(symbol, true) !, self.reflector);
+          listLazyRoutes(self._metadataResolver.getNgModuleMetadata(symbol, true)!, self.reflector);
       for (const lazyRoute of lazyRoutes) {
         allLazyRoutes.push(lazyRoute);
         visitLazyRoute(lazyRoute.referencedModule, seenRoutes, allLazyRoutes);
@@ -803,7 +812,9 @@ export interface NgAnalyzedFile {
   exportsNonSourceFiles: boolean;
 }
 
-export interface NgAnalyzeModulesHost { isSourceFile(filePath: string): boolean; }
+export interface NgAnalyzeModulesHost {
+  isSourceFile(filePath: string): boolean;
+}
 
 export function analyzeNgModules(
     fileNames: string[], host: NgAnalyzeModulesHost, staticSymbolResolver: StaticSymbolResolver,
@@ -823,8 +834,8 @@ export function analyzeAndValidateNgModules(
 function validateAnalyzedModules(analyzedModules: NgAnalyzedModules): NgAnalyzedModules {
   if (analyzedModules.symbolsMissingModule && analyzedModules.symbolsMissingModule.length) {
     const messages = analyzedModules.symbolsMissingModule.map(
-        s =>
+        s => `Cannot determine the module for class ${s.name} in ${s.filePath}! Add ${
-            `Cannot determine the module for class ${s.name} in ${s.filePath}! Add ${s.name} to the NgModule to fix it.`);
+            s.name} to the NgModule to fix it.`);
     throw syntaxError(messages.join('\n'));
   }
   return analyzedModules;
@@ -918,8 +929,13 @@ export function analyzeFile(
     });
   }
   return {
-      fileName,  directives,  abstractDirectives,    pipes,
+    fileName,
-      ngModules, injectables, exportsNonSourceFiles,
+    directives,
+    abstractDirectives,
+    pipes,
+    ngModules,
+    injectables,
+    exportsNonSourceFiles,
   };
 }
 
@@ -957,7 +973,9 @@ function isValueExportingNonSourceFile(host: NgAnalyzeModulesHost, metadata: any
   let exportsNonSourceFiles = false;
 
   class Visitor implements ValueVisitor {
-    visitArray(arr: any[], context: any): any { arr.forEach(v => visitValue(v, this, context)); }
+    visitArray(arr: any[], context: any): any {
+      arr.forEach(v => visitValue(v, this, context));
+    }
     visitStringMap(map: {[key: string]: any}, context: any): any {
       Object.keys(map).forEach((key) => visitValue(map[key], this, context));
     }

packages/compiler/src/aot/compiler_factory.ts

@@ -36,9 +36,9 @@ import {StaticSymbol, StaticSymbolCache} from './static_symbol';
 import {StaticSymbolResolver} from './static_symbol_resolver';
 import {AotSummaryResolver} from './summary_resolver';
 
-export function createAotUrlResolver(host: {
+export function createAotUrlResolver(
-  resourceNameToFileName(resourceName: string, containingFileName: string): string | null;
+    host: {resourceNameToFileName(resourceName: string, containingFileName: string): string|null;}):
-}): UrlResolver {
+    UrlResolver {
   return {
     resolve: (basePath: string, url: string) => {
       const filePath = host.resourceNameToFileName(url, basePath);

packages/compiler/src/aot/formatted_error.ts

@@ -20,7 +20,7 @@ export interface FormattedMessageChain {
   next?: FormattedMessageChain[];
 }
 
-export type FormattedError = Error & {
+export type FormattedError = Error&{
   chain: FormattedMessageChain;
   position?: Position;
 };
@@ -34,10 +34,10 @@ function indentStr(level: number): string {
   return half + half + (level % 2 === 1 ? ' ' : '');
 }
 
-function formatChain(chain: FormattedMessageChain | undefined, indent: number = 0): string {
+function formatChain(chain: FormattedMessageChain|undefined, indent: number = 0): string {
   if (!chain) return '';
   const position = chain.position ?
-      `${chain.position.fileName}(${chain.position.line+1},${chain.position.column+1})` :
+      `${chain.position.fileName}(${chain.position.line + 1},${chain.position.column + 1})` :
       '';
   const prefix = position && indent === 0 ? `${position}: ` : '';
   const postfix = position && indent !== 0 ? ` at ${position}` : '';

packages/compiler/src/aot/generated_file.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Statement, areAllEquivalent} from '../output/output_ast';
+import {areAllEquivalent, Statement} from '../output/output_ast';
 import {TypeScriptEmitter} from '../output/ts_emitter';
 
 export class GeneratedFile {
@@ -36,7 +36,7 @@ export class GeneratedFile {
     }
     // Note: the constructor guarantees that if this.source is not filled,
     // then this.stmts is.
-    return areAllEquivalent(this.stmts !, other.stmts !);
+    return areAllEquivalent(this.stmts!, other.stmts!);
   }
 }
 

packages/compiler/src/aot/lazy_routes.ts

@@ -34,7 +34,7 @@ export function listLazyRoutes(
   return allLazyRoutes;
 }
 
-function _collectLoadChildren(routes: string | Route | Route[], target: string[] = []): string[] {
+function _collectLoadChildren(routes: string|Route|Route[], target: string[] = []): string[] {
   if (typeof routes === 'string') {
     target.push(routes);
   } else if (Array.isArray(routes)) {

packages/compiler/src/aot/static_reflector.ts

@@ -8,12 +8,12 @@
 
 import {CompileSummaryKind} from '../compile_metadata';
 import {CompileReflector} from '../compile_reflector';
-import {MetadataFactory, createAttribute, createComponent, createContentChild, createContentChildren, createDirective, createHost, createHostBinding, createHostListener, createInject, createInjectable, createInput, createNgModule, createOptional, createOutput, createPipe, createSelf, createSkipSelf, createViewChild, createViewChildren} from '../core';
+import {createAttribute, createComponent, createContentChild, createContentChildren, createDirective, createHost, createHostBinding, createHostListener, createInject, createInjectable, createInput, createNgModule, createOptional, createOutput, createPipe, createSelf, createSkipSelf, createViewChild, createViewChildren, MetadataFactory} from '../core';
 import * as o from '../output/output_ast';
 import {SummaryResolver} from '../summary_resolver';
 import {syntaxError} from '../util';
 
-import {FormattedMessageChain, formattedError} from './formatted_error';
+import {formattedError, FormattedMessageChain} from './formatted_error';
 import {StaticSymbol} from './static_symbol';
 import {StaticSymbolResolver} from './static_symbol_resolver';
 
@@ -50,13 +50,13 @@ export class StaticReflector implements CompileReflector {
   private conversionMap = new Map<StaticSymbol, (context: StaticSymbol, args: any[]) => any>();
   private resolvedExternalReferences = new Map<string, StaticSymbol>();
   // TODO(issue/24571): remove '!'.
-  private injectionToken !: StaticSymbol;
+  private injectionToken!: StaticSymbol;
   // TODO(issue/24571): remove '!'.
-  private opaqueToken !: StaticSymbol;
+  private opaqueToken!: StaticSymbol;
   // TODO(issue/24571): remove '!'.
-  ROUTES !: StaticSymbol;
+  ROUTES!: StaticSymbol;
   // TODO(issue/24571): remove '!'.
-  private ANALYZE_FOR_ENTRY_COMPONENTS !: StaticSymbol;
+  private ANALYZE_FOR_ENTRY_COMPONENTS!: StaticSymbol;
   private annotationForParentClassWithSummaryKind =
       new Map<CompileSummaryKind, MetadataFactory<any>[]>();
 
@@ -110,10 +110,10 @@ export class StaticReflector implements CompileReflector {
       if (declarationSymbol) return declarationSymbol;
     }
     const refSymbol =
-        this.symbolResolver.getSymbolByModule(ref.moduleName !, ref.name !, containingFile);
+        this.symbolResolver.getSymbolByModule(ref.moduleName!, ref.name!, containingFile);
     const declarationSymbol = this.findSymbolDeclaration(refSymbol);
     if (!containingFile) {
-      this.symbolResolver.recordModuleNameForFileName(refSymbol.filePath, ref.moduleName !);
+      this.symbolResolver.recordModuleNameForFileName(refSymbol.filePath, ref.moduleName!);
       this.symbolResolver.recordImportAs(declarationSymbol, refSymbol);
     }
     if (key) {
@@ -192,16 +192,20 @@ export class StaticReflector implements CompileReflector {
         const summary = this.summaryResolver.resolveSummary(parentType);
         if (summary && summary.type) {
           const requiredAnnotationTypes =
-              this.annotationForParentClassWithSummaryKind.get(summary.type.summaryKind !) !;
+              this.annotationForParentClassWithSummaryKind.get(summary.type.summaryKind!)!;
           const typeHasRequiredAnnotation = requiredAnnotationTypes.some(
               (requiredType) => ownAnnotations.some(ann => requiredType.isTypeOf(ann)));
           if (!typeHasRequiredAnnotation) {
             this.reportError(
                 formatMetadataError(
                     metadataError(
-                        `Class ${type.name} in ${type.filePath} extends from a ${CompileSummaryKind[summary.type.summaryKind!]} in another compilation unit without duplicating the decorator`,
+                        `Class ${type.name} in ${type.filePath} extends from a ${
+                            CompileSummaryKind[summary.type.summaryKind!
+            ]} in another compilation unit without duplicating the decorator`,
                         /* summary */ undefined,
-                        `Please add a ${requiredAnnotationTypes.map((type) => type.ngMetadataName).join(' or ')} decorator to the class`),
+                        `Please add a ${
+                            requiredAnnotationTypes.map((type) => type.ngMetadataName)
+                                .join(' or ')} decorator to the class`),
                     type),
                 type);
           }
@@ -221,7 +225,7 @@ export class StaticReflector implements CompileReflector {
       if (parentType) {
         const parentPropMetadata = this.propMetadata(parentType);
         Object.keys(parentPropMetadata).forEach((parentProp) => {
-          propMetadata ![parentProp] = parentPropMetadata[parentProp];
+          propMetadata![parentProp] = parentPropMetadata[parentProp];
         });
       }
 
@@ -231,10 +235,10 @@ export class StaticReflector implements CompileReflector {
         const prop = (<any[]>propData)
                          .find(a => a['__symbolic'] == 'property' || a['__symbolic'] == 'method');
         const decorators: any[] = [];
-        if (propMetadata ![propName]) {
+        if (propMetadata![propName]) {
-          decorators.push(...propMetadata ![propName]);
+          decorators.push(...propMetadata![propName]);
         }
-        propMetadata ![propName] = decorators;
+        propMetadata![propName] = decorators;
         if (prop && prop['decorators']) {
           decorators.push(...this.simplify(type, prop['decorators']));
         }
@@ -271,7 +275,7 @@ export class StaticReflector implements CompileReflector {
             if (decorators) {
               nestedResult.push(...decorators);
             }
-            parameters !.push(nestedResult);
+            parameters!.push(nestedResult);
           });
         } else if (parentType) {
           parameters = this.parameters(parentType);
@@ -297,7 +301,7 @@ export class StaticReflector implements CompileReflector {
       if (parentType) {
         const parentMethodNames = this._methodNames(parentType);
         Object.keys(parentMethodNames).forEach((parentProp) => {
-          methodNames ![parentProp] = parentMethodNames[parentProp];
+          methodNames![parentProp] = parentMethodNames[parentProp];
         });
       }
 
@@ -305,7 +309,7 @@ export class StaticReflector implements CompileReflector {
       Object.keys(members).forEach((propName) => {
         const propData = members[propName];
         const isMethod = (<any[]>propData).some(a => a['__symbolic'] == 'method');
-        methodNames ![propName] = methodNames ![propName] || isMethod;
+        methodNames![propName] = methodNames![propName] || isMethod;
       });
       this.methodCache.set(type, methodNames);
     }
@@ -485,7 +489,7 @@ export class StaticReflector implements CompileReflector {
             // Propagate the message text up but add a message to the chain that explains how we got
             // here.
             // e.chain implies e.symbol
-            const summaryMsg = e.chain ? 'references \'' + e.symbol !.name + '\'' : errorSummary(e);
+            const summaryMsg = e.chain ? 'references \'' + e.symbol!.name + '\'' : errorSummary(e);
             const summary = `'${nestedContext.name}' ${summaryMsg}`;
             const chain = {message: summary, position: e.position, next: e.chain};
             // TODO(chuckj): retrieve the position information indirectly from the collectors node
@@ -494,7 +498,8 @@ export class StaticReflector implements CompileReflector {
                 {
                   message: e.message,
                   advise: e.advise,
-                  context: e.context, chain,
+                  context: e.context,
+                  chain,
                   symbol: nestedContext
                 },
                 context);
@@ -566,7 +571,8 @@ export class StaticReflector implements CompileReflector {
             {
               message: FUNCTION_CALL_NOT_SUPPORTED,
               context: functionSymbol,
-              value: targetFunction, position
+              value: targetFunction,
+              position
             },
             context);
       }
@@ -875,7 +881,7 @@ interface MetadataMessageChain {
   next?: MetadataMessageChain;
 }
 
-type MetadataError = Error & {
+type MetadataError = Error&{
   position?: Position;
   advise?: string;
   summary?: string;
@@ -916,7 +922,8 @@ function expandedMessage(message: string, context: any): string {
   switch (message) {
     case REFERENCE_TO_NONEXPORTED_CLASS:
       if (context && context.className) {
-        return `References to a non-exported class are not supported in decorators but ${context.className} was referenced.`;
+        return `References to a non-exported class are not supported in decorators but ${
+            context.className} was referenced.`;
       }
       break;
     case VARIABLE_NOT_INITIALIZED:
@@ -935,7 +942,8 @@ function expandedMessage(message: string, context: any): string {
       return 'Function calls are not supported in decorators';
     case REFERENCE_TO_LOCAL_SYMBOL:
       if (context && context.name) {
-        return `Reference to a local (non-exported) symbols are not supported in decorators but '${context.name}' was referenced`;
+        return `Reference to a local (non-exported) symbols are not supported in decorators but '${
+            context.name}' was referenced`;
       }
       break;
     case LAMBDA_NOT_SUPPORTED:
@@ -1040,7 +1048,9 @@ abstract class BindingScope {
 }
 
 class PopulatedScope extends BindingScope {
-  constructor(private bindings: Map<string, any>) { super(); }
+  constructor(private bindings: Map<string, any>) {
+    super();
+  }
 
   resolve(name: string): any {
     return this.bindings.has(name) ? this.bindings.get(name) : BindingScope.missing;
@@ -1048,7 +1058,7 @@ class PopulatedScope extends BindingScope {
 }
 
 function formatMetadataMessageChain(
-    chain: MetadataMessageChain, advise: string | undefined): FormattedMessageChain {
+    chain: MetadataMessageChain, advise: string|undefined): FormattedMessageChain {
   const expanded = expandedMessage(chain.message, chain.context);
   const nesting = chain.symbol ? ` in '${chain.symbol.name}'` : '';
   const message = `${expanded}${nesting}`;

packages/compiler/src/aot/static_symbol.ts

@@ -31,7 +31,7 @@ export class StaticSymbolCache {
 
   get(declarationFile: string, name: string, members?: string[]): StaticSymbol {
     members = members || [];
-    const memberSuffix = members.length ? `.${ members.join('.')}` : '';
+    const memberSuffix = members.length ? `.${members.join('.')}` : '';
     const key = `"${declarationFile}".${name}${memberSuffix}`;
     let result = this.cache.get(key);
     if (!result) {

packages/compiler/src/aot/static_symbol_resolver.ts

@@ -76,12 +76,12 @@ export class StaticSymbolResolver {
 
   resolveSymbol(staticSymbol: StaticSymbol): ResolvedStaticSymbol {
     if (staticSymbol.members.length > 0) {
-      return this._resolveSymbolMembers(staticSymbol) !;
+      return this._resolveSymbolMembers(staticSymbol)!;
     }
     // Note: always ask for a summary first,
     // as we might have read shallow metadata via a .d.ts file
     // for the symbol.
-    const resultFromSummary = this._resolveSymbolFromSummary(staticSymbol) !;
+    const resultFromSummary = this._resolveSymbolFromSummary(staticSymbol)!;
     if (resultFromSummary) {
       return resultFromSummary;
     }
@@ -93,7 +93,7 @@ export class StaticSymbolResolver {
     // have summaries, only .d.ts files. So we always need to check both, the summary
     // and metadata.
     this._createSymbolsOf(staticSymbol.filePath);
-    return this.resolvedSymbols.get(staticSymbol) !;
+    return this.resolvedSymbols.get(staticSymbol)!;
   }
 
   /**
@@ -119,15 +119,14 @@ export class StaticSymbolResolver {
       const baseSymbol =
           this.getStaticSymbol(summarizedFileName, summarizedName, staticSymbol.members);
       const baseImportAs = this.getImportAs(baseSymbol, useSummaries);
-      return baseImportAs ?
+      return baseImportAs ? this.getStaticSymbol(
-          this.getStaticSymbol(
+                                summaryForJitFileName(baseImportAs.filePath),
-              summaryForJitFileName(baseImportAs.filePath), summaryForJitName(baseImportAs.name),
+                                summaryForJitName(baseImportAs.name), baseSymbol.members) :
-              baseSymbol.members) :
                             null;
     }
     let result = (useSummaries && this.summaryResolver.getImportAs(staticSymbol)) || null;
     if (!result) {
-      result = this.importAs.get(staticSymbol) !;
+      result = this.importAs.get(staticSymbol)!;
     }
     return result;
   }
@@ -347,8 +346,8 @@ export class StaticSymbolResolver {
           // correctly.
           const originFilePath = this.resolveModule(origin, filePath);
           if (!originFilePath) {
-            this.reportError(new Error(
+            this.reportError(new Error(`Couldn't resolve original symbol for ${origin} from ${
-                `Couldn't resolve original symbol for ${origin} from ${this.host.getOutputName(filePath)}`));
+                this.host.getOutputName(filePath)}`));
           } else {
             this.symbolResourcePaths.set(symbol, originFilePath);
           }
@@ -413,7 +412,7 @@ export class StaticSymbolResolver {
           }
           let filePath: string;
           if (module) {
-            filePath = self.resolveModule(module, sourceSymbol.filePath) !;
+            filePath = self.resolveModule(module, sourceSymbol.filePath)!;
             if (!filePath) {
               return {
                 __symbolic: 'error',
@@ -501,8 +500,11 @@ export class StaticSymbolResolver {
       }
       if (moduleMetadata['version'] != SUPPORTED_SCHEMA_VERSION) {
         const errorMessage = moduleMetadata['version'] == 2 ?
-            `Unsupported metadata version ${moduleMetadata['version']} for module ${module}. This module should be compiled with a newer version of ngc` :
+            `Unsupported metadata version ${moduleMetadata['version']} for module ${
-            `Metadata version mismatch for module ${this.host.getOutputName(module)}, found version ${moduleMetadata['version']}, expected ${SUPPORTED_SCHEMA_VERSION}`;
+                module}. This module should be compiled with a newer version of ngc` :
+            `Metadata version mismatch for module ${
+                this.host.getOutputName(module)}, found version ${
+                moduleMetadata['version']}, expected ${SUPPORTED_SCHEMA_VERSION}`;
         this.reportError(new Error(errorMessage));
       }
       this.metadataCache.set(module, moduleMetadata);
@@ -514,9 +516,8 @@ export class StaticSymbolResolver {
   getSymbolByModule(module: string, symbolName: string, containingFile?: string): StaticSymbol {
     const filePath = this.resolveModule(module, containingFile);
     if (!filePath) {
-      this.reportError(
+      this.reportError(new Error(`Could not resolve module ${module}${
-          new Error(`Could not resolve module ${module}${containingFile ? ' relative to ' +
+          containingFile ? ' relative to ' + this.host.getOutputName(containingFile) : ''}`));
-            this.host.getOutputName(containingFile) : ''}`));
       return this.getStaticSymbol(`ERROR:${module}`, symbolName);
     }
     return this.getStaticSymbol(filePath, symbolName);

packages/compiler/src/aot/summary_resolver.ts

@@ -71,7 +71,7 @@ export class AotSummaryResolver implements SummaryResolver<StaticSymbol> {
     let summary = this.summaryCache.get(rootSymbol);
     if (!summary) {
       this._loadSummaryFile(staticSymbol.filePath);
-      summary = this.summaryCache.get(staticSymbol) !;
+      summary = this.summaryCache.get(staticSymbol)!;
     }
     return (rootSymbol === staticSymbol && summary) || null;
   }
@@ -85,7 +85,7 @@ export class AotSummaryResolver implements SummaryResolver<StaticSymbol> {
 
   getImportAs(staticSymbol: StaticSymbol): StaticSymbol {
     staticSymbol.assertNoMembers();
-    return this.importAs.get(staticSymbol) !;
+    return this.importAs.get(staticSymbol)!;
   }
 
   /**
@@ -95,7 +95,9 @@ export class AotSummaryResolver implements SummaryResolver<StaticSymbol> {
     return this.knownFileNameToModuleNames.get(importedFilePath) || null;
   }
 
-  addSummary(summary: Summary<StaticSymbol>) { this.summaryCache.set(summary.symbol, summary); }
+  addSummary(summary: Summary<StaticSymbol>) {
+    this.summaryCache.set(summary.symbol, summary);
+  }
 
   private _loadSummaryFile(filePath: string): boolean {
     let hasSummary = this.loadedFilePaths.get(filePath);
@@ -121,7 +123,9 @@ export class AotSummaryResolver implements SummaryResolver<StaticSymbol> {
       if (moduleName) {
         this.knownFileNameToModuleNames.set(filePath, moduleName);
       }
-      importAs.forEach((importAs) => { this.importAs.set(importAs.symbol, importAs.importAs); });
+      importAs.forEach((importAs) => {
+        this.importAs.set(importAs.symbol, importAs.importAs);
+      });
     }
     return hasSummary;
   }

packages/compiler/src/aot/summary_serializer.ts

@@ -15,11 +15,11 @@ import {ResolvedStaticSymbol, StaticSymbolResolver, unwrapResolvedMetadata} from
 import {isLoweredSymbol, ngfactoryFilePath, summaryForJitFileName, summaryForJitName} from './util';
 
 export function serializeSummaries(
-    srcFileName: string, forJitCtx: OutputContext | null,
+    srcFileName: string, forJitCtx: OutputContext|null,
     summaryResolver: SummaryResolver<StaticSymbol>, symbolResolver: StaticSymbolResolver,
     symbols: ResolvedStaticSymbol[], types: {
       summary: CompileTypeSummary,
-      metadata: CompileNgModuleMetadata | CompileDirectiveMetadata | CompilePipeMetadata |
+      metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|CompilePipeMetadata|
       CompileTypeMetadata
     }[],
     createExternalSymbolReexports =
@@ -41,7 +41,9 @@ export function serializeSummaries(
   const {json, exportAs} = toJsonSerializer.serialize(createExternalSymbolReexports);
   if (forJitCtx) {
     const forJitSerializer = new ForJitSerializer(forJitCtx, symbolResolver, summaryResolver);
-    types.forEach(({summary, metadata}) => { forJitSerializer.addSourceType(summary, metadata); });
+    types.forEach(({summary, metadata}) => {
+      forJitSerializer.addSourceType(summary, metadata);
+    });
     toJsonSerializer.unprocessedSymbolSummariesBySymbol.forEach((summary) => {
       if (summaryResolver.isLibraryFile(summary.symbol.filePath) && summary.type) {
         forJitSerializer.addLibType(summary.type);
@@ -55,7 +57,7 @@ export function serializeSummaries(
 export function deserializeSummaries(
     symbolCache: StaticSymbolCache, summaryResolver: SummaryResolver<StaticSymbol>,
     libraryFileName: string, json: string): {
-  moduleName: string | null,
+  moduleName: string|null,
   summaries: Summary<StaticSymbol>[],
   importAs: {symbol: StaticSymbol, importAs: StaticSymbol}[]
 } {
@@ -144,7 +146,7 @@ class ToJsonSerializer extends ValueTransformer {
       processedSummary.metadata = this.processValue(metadata, SerializationFlags.ResolveValue);
       if (metadata instanceof StaticSymbol &&
           this.summaryResolver.isLibraryFile(metadata.filePath)) {
-        const declarationSymbol = this.symbols[this.indexBySymbol.get(metadata) !];
+        const declarationSymbol = this.symbols[this.indexBySymbol.get(metadata)!];
         if (!isLoweredSymbol(declarationSymbol.name)) {
           // Note: symbols that were introduced during codegen in the user file can have a reexport
           // if a user used `export *`. However, we can't rely on this as tsickle will change
@@ -194,7 +196,7 @@ class ToJsonSerializer extends ValueTransformer {
       summaries: this.processedSummaries,
       symbols: this.symbols.map((symbol, index) => {
         symbol.assertNoMembers();
-        let importAs: string|number = undefined !;
+        let importAs: string|number = undefined!;
         if (this.summaryResolver.isLibraryFile(symbol.filePath)) {
           const reexportSymbol = this.reexportedBy.get(symbol);
           if (reexportSymbol) {
@@ -202,7 +204,7 @@ class ToJsonSerializer extends ValueTransformer {
             // user, we just proxy the external static symbol reference to the manual export.
             // This ensures that the AOT compiler imports the external symbol through the
             // user export and does not introduce another dependency which is not needed.
-            importAs = this.indexBySymbol.get(reexportSymbol) !;
+            importAs = this.indexBySymbol.get(reexportSymbol)!;
           } else if (createExternalSymbolReexports) {
             // In this case, the given external static symbol is *not* manually exported by
             // the user, and we manually create a re-export in the factory file so that we
@@ -270,7 +272,7 @@ class ToJsonSerializer extends ValueTransformer {
       if (this.unprocessedSymbolSummariesBySymbol.has(baseSymbol)) {
         // the summary for this symbol was already added
         // -> nothing to do.
-        return index !;
+        return index!;
       }
       summary = this.loadSummary(baseSymbol);
       if (summary && summary.metadata instanceof StaticSymbol) {
@@ -324,8 +326,9 @@ class ForJitSerializer {
       private summaryResolver: SummaryResolver<StaticSymbol>) {}
 
   addSourceType(
-      summary: CompileTypeSummary, metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|
+      summary: CompileTypeSummary,
-      CompilePipeMetadata|CompileTypeMetadata) {
+      metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|CompilePipeMetadata|
+      CompileTypeMetadata) {
     this.data.push({summary, metadata, isLibrary: false});
   }
 
@@ -356,7 +359,7 @@ class ForJitSerializer {
         const fnName = summaryForJitName(summary.type.reference.name);
         createSummaryForJitFunction(
             this.outputCtx, summary.type.reference,
-            this.serializeSummaryWithDeps(summary, metadata !));
+            this.serializeSummaryWithDeps(summary, metadata!));
       }
     }
 
@@ -372,8 +375,9 @@ class ForJitSerializer {
   }
 
   private serializeSummaryWithDeps(
-      summary: CompileTypeSummary, metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|
+      summary: CompileTypeSummary,
-      CompilePipeMetadata|CompileTypeMetadata): o.Expression {
+      metadata: CompileNgModuleMetadata|CompileDirectiveMetadata|CompilePipeMetadata|
+      CompileTypeMetadata): o.Expression {
     const expressions: o.Expression[] = [this.serializeSummary(summary)];
     let providers: CompileProviderMetadata[] = [];
     if (metadata instanceof CompileNgModuleMetadata) {
@@ -403,7 +407,8 @@ class ForJitSerializer {
     // i.e. we didn't generate .ngsummary.ts files for these.
     expressions.push(
         ...providers.filter(provider => !!provider.useClass).map(provider => this.serializeSummary({
-          summaryKind: CompileSummaryKind.Injectable, type: provider.useClass
+          summaryKind: CompileSummaryKind.Injectable,
+          type: provider.useClass
         } as CompileTypeSummary)));
     return o.literalArr(expressions);
   }
@@ -425,7 +430,9 @@ class ForJitSerializer {
         return new o.LiteralMapExpr(Object.keys(map).map(
             (key) => new o.LiteralMapEntry(key, visitValue(map[key], this, context), false)));
       }
-      visitPrimitive(value: any, context: any): any { return o.literal(value); }
+      visitPrimitive(value: any, context: any): any {
+        return o.literal(value);
+      }
       visitOther(value: any, context: any): any {
         if (value instanceof StaticSymbol) {
           return outputCtx.importExpr(value);
@@ -441,7 +448,7 @@ class ForJitSerializer {
 
 class FromJsonDeserializer extends ValueTransformer {
   // TODO(issue/24571): remove '!'.
-  private symbols !: StaticSymbol[];
+  private symbols!: StaticSymbol[];
 
   constructor(
       private symbolCache: StaticSymbolCache,
@@ -450,11 +457,11 @@ class FromJsonDeserializer extends ValueTransformer {
   }
 
   deserialize(libraryFileName: string, json: string): {
-    moduleName: string | null,
+    moduleName: string|null,
     summaries: Summary<StaticSymbol>[],
     importAs: {symbol: StaticSymbol, importAs: StaticSymbol}[]
   } {
-    const data: {moduleName: string | null, summaries: any[], symbols: any[]} = JSON.parse(json);
+    const data: {moduleName: string|null, summaries: any[], symbols: any[]} = JSON.parse(json);
     const allImportAs: {symbol: StaticSymbol, importAs: StaticSymbol}[] = [];
     this.symbols = data.symbols.map(
         (serializedSymbol) => this.symbolCache.get(

packages/compiler/src/ast_path.ts

@@ -26,23 +26,35 @@
 export class AstPath<T> {
   constructor(private path: T[], public position: number = -1) {}
 
-  get empty(): boolean { return !this.path || !this.path.length; }
+  get empty(): boolean {
-  get head(): T|undefined { return this.path[0]; }
+    return !this.path || !this.path.length;
-  get tail(): T|undefined { return this.path[this.path.length - 1]; }
+  }
+  get head(): T|undefined {
+    return this.path[0];
+  }
+  get tail(): T|undefined {
+    return this.path[this.path.length - 1];
+  }
 
   parentOf(node: T|undefined): T|undefined {
     return node && this.path[this.path.indexOf(node) - 1];
   }
-  childOf(node: T): T|undefined { return this.path[this.path.indexOf(node) + 1]; }
+  childOf(node: T): T|undefined {
+    return this.path[this.path.indexOf(node) + 1];
+  }
 
-  first<N extends T>(ctor: {new (...args: any[]): N}): N|undefined {
+  first<N extends T>(ctor: {new(...args: any[]): N}): N|undefined {
     for (let i = this.path.length - 1; i >= 0; i--) {
       let item = this.path[i];
       if (item instanceof ctor) return <N>item;
     }
   }
 
-  push(node: T) { this.path.push(node); }
+  push(node: T) {
+    this.path.push(node);
+  }
 
-  pop(): T { return this.path.pop() !; }
+  pop(): T {
+    return this.path.pop()!;
+  }
 }

packages/compiler/src/compile_metadata.ts

@@ -24,8 +24,8 @@ export function sanitizeIdentifier(name: string): string {
 
 let _anonymousTypeIndex = 0;
 
-export function identifierName(compileIdentifier: CompileIdentifierMetadata | null | undefined):
+export function identifierName(compileIdentifier: CompileIdentifierMetadata|null|undefined): string|
-    string|null {
+    null {
   if (!compileIdentifier || !compileIdentifier.reference) {
     return null;
   }
@@ -72,9 +72,13 @@ export function componentFactoryName(compType: any): string {
   return `${identifierName({reference: compType})}NgFactory`;
 }
 
-export interface ProxyClass { setDelegate(delegate: any): void; }
+export interface ProxyClass {
+  setDelegate(delegate: any): void;
+}
 
-export interface CompileIdentifierMetadata { reference: any; }
+export interface CompileIdentifierMetadata {
+  reference: any;
+}
 
 export enum CompileSummaryKind {
   Pipe,
@@ -175,8 +179,8 @@ export class CompileStylesheetMetadata {
   styles: string[];
   styleUrls: string[];
   constructor(
-      {moduleUrl, styles,
+      {moduleUrl, styles, styleUrls}:
-       styleUrls}: {moduleUrl?: string, styles?: string[], styleUrls?: string[]} = {}) {
+          {moduleUrl?: string, styles?: string[], styleUrls?: string[]} = {}) {
     this.moduleUrl = moduleUrl || null;
     this.styles = _normalizeArray(styles);
     this.styleUrls = _normalizeArray(styleUrls);
@@ -209,10 +213,21 @@ export class CompileTemplateMetadata {
   ngContentSelectors: string[];
   interpolation: [string, string]|null;
   preserveWhitespaces: boolean;
-  constructor({encapsulation, template, templateUrl, htmlAst, styles, styleUrls,
+  constructor({
-               externalStylesheets, animations, ngContentSelectors, interpolation, isInline,
+    encapsulation,
-               preserveWhitespaces}: {
+    template,
-    encapsulation: ViewEncapsulation | null,
+    templateUrl,
+    htmlAst,
+    styles,
+    styleUrls,
+    externalStylesheets,
+    animations,
+    ngContentSelectors,
+    interpolation,
+    isInline,
+    preserveWhitespaces
+  }: {
+    encapsulation: ViewEncapsulation|null,
     template: string|null,
     templateUrl: string|null,
     htmlAst: HtmlParseTreeResult|null,
@@ -286,9 +301,27 @@ export interface CompileDirectiveSummary extends CompileTypeSummary {
  * Metadata regarding compilation of a directive.
  */
 export class CompileDirectiveMetadata {
-  static create({isHost, type, isComponent, selector, exportAs, changeDetection, inputs, outputs,
+  static create({
-                 host, providers, viewProviders, queries, guards, viewQueries, entryComponents,
+    isHost,
-                 template, componentViewType, rendererType, componentFactory}: {
+    type,
+    isComponent,
+    selector,
+    exportAs,
+    changeDetection,
+    inputs,
+    outputs,
+    host,
+    providers,
+    viewProviders,
+    queries,
+    guards,
+    viewQueries,
+    entryComponents,
+    template,
+    componentViewType,
+    rendererType,
+    componentFactory
+  }: {
     isHost: boolean,
     type: CompileTypeMetadata,
     isComponent: boolean,
@@ -347,7 +380,10 @@ export class CompileDirectiveMetadata {
     return new CompileDirectiveMetadata({
       isHost,
       type,
-      isComponent: !!isComponent, selector, exportAs, changeDetection,
+      isComponent: !!isComponent,
+      selector,
+      exportAs,
+      changeDetection,
       inputs: inputsMap,
       outputs: outputsMap,
       hostListeners,
@@ -389,7 +425,8 @@ export class CompileDirectiveMetadata {
   rendererType: StaticSymbol|object|null;
   componentFactory: StaticSymbol|object|null;
 
-  constructor({isHost,
+  constructor({
+    isHost,
     type,
     isComponent,
     selector,
@@ -409,7 +446,8 @@ export class CompileDirectiveMetadata {
     template,
     componentViewType,
     rendererType,
-               componentFactory}: {
+    componentFactory
+  }: {
     isHost: boolean,
     type: CompileTypeMetadata,
     isComponent: boolean,
@@ -534,7 +572,7 @@ export interface CompileNgModuleSummary extends CompileTypeSummary {
 
 export class CompileShallowModuleMetadata {
   // TODO(issue/24571): remove '!'.
-  type !: CompileTypeMetadata;
+  type!: CompileTypeMetadata;
 
   rawExports: any;
   rawImports: any;
@@ -562,9 +600,21 @@ export class CompileNgModuleMetadata {
 
   transitiveModule: TransitiveCompileNgModuleMetadata;
 
-  constructor({type, providers, declaredDirectives, exportedDirectives, declaredPipes,
+  constructor({
-               exportedPipes, entryComponents, bootstrapComponents, importedModules,
+    type,
-               exportedModules, schemas, transitiveModule, id}: {
+    providers,
+    declaredDirectives,
+    exportedDirectives,
+    declaredPipes,
+    exportedPipes,
+    entryComponents,
+    bootstrapComponents,
+    importedModules,
+    exportedModules,
+    schemas,
+    transitiveModule,
+    id
+  }: {
     type: CompileTypeMetadata,
     providers: CompileProviderMetadata[],
     declaredDirectives: CompileIdentifierMetadata[],
@@ -595,7 +645,7 @@ export class CompileNgModuleMetadata {
   }
 
   toSummary(): CompileNgModuleSummary {
-    const module = this.transitiveModule !;
+    const module = this.transitiveModule!;
     return {
       summaryKind: CompileSummaryKind.NgModule,
       type: this.type,
@@ -666,7 +716,7 @@ export class TransitiveCompileNgModuleMetadata {
   }
 }
 
-function _normalizeArray(obj: any[] | undefined | null): any[] {
+function _normalizeArray(obj: any[]|undefined|null): any[] {
   return obj || [];
 }
 
@@ -698,7 +748,7 @@ export class ProviderMeta {
 }
 
 export function flatten<T>(list: Array<T|T[]>): T[] {
-  return list.reduce((flat: any[], item: T | T[]): T[] => {
+  return list.reduce((flat: any[], item: T|T[]): T[] => {
     const flatItem = Array.isArray(item) ? flatten(item) : item;
     return (<T[]>flat).concat(flatItem);
   }, []);
@@ -712,7 +762,7 @@ function jitSourceUrl(url: string) {
 
 export function templateSourceUrl(
     ngModuleType: CompileIdentifierMetadata, compMeta: {type: CompileIdentifierMetadata},
-    templateMeta: {isInline: boolean, templateUrl: string | null}) {
+    templateMeta: {isInline: boolean, templateUrl: string|null}) {
   let url: string;
   if (templateMeta.isInline) {
     if (compMeta.type.reference instanceof StaticSymbol) {
@@ -723,13 +773,13 @@ export function templateSourceUrl(
       url = `${identifierName(ngModuleType)}/${identifierName(compMeta.type)}.html`;
     }
   } else {
-    url = templateMeta.templateUrl !;
+    url = templateMeta.templateUrl!;
   }
   return compMeta.type.reference instanceof StaticSymbol ? url : jitSourceUrl(url);
 }
 
 export function sharedStylesheetJitUrl(meta: CompileStylesheetMetadata, id: number) {
-  const pathParts = meta.moduleUrl !.split(/\/\\/g);
+  const pathParts = meta.moduleUrl!.split(/\/\\/g);
   const baseName = pathParts[pathParts.length - 1];
   return jitSourceUrl(`css/${id}${baseName}.ngstyle.js`);
 }

packages/compiler/src/compiler_facade_interface.ts

@@ -22,7 +22,9 @@
  * ```
  */
 
-export interface ExportedCompilerFacade { ɵcompilerFacade: CompilerFacade; }
+export interface ExportedCompilerFacade {
+  ɵcompilerFacade: CompilerFacade;
+}
 
 export interface CompilerFacade {
   compilePipe(angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3PipeMetadataFacade):
@@ -44,13 +46,15 @@ export interface CompilerFacade {
 
   R3ResolvedDependencyType: typeof R3ResolvedDependencyType;
   R3FactoryTarget: typeof R3FactoryTarget;
-  ResourceLoader: {new (): ResourceLoader};
+  ResourceLoader: {new(): ResourceLoader};
 }
 
-export interface CoreEnvironment { [name: string]: Function; }
+export interface CoreEnvironment {
+  [name: string]: Function;
+}
 
 export type ResourceLoader = {
-  get(url: string): Promise<string>| string;
+  get(url: string): Promise<string>|string;
 };
 
 export type StringMap = {
@@ -58,7 +62,7 @@ export type StringMap = {
 };
 
 export type StringMapWithRename = {
-  [key: string]: string | [string, string];
+  [key: string]: string|[string, string];
 };
 
 export type Provider = any;

packages/compiler/src/compiler_util/expression_converter.ts

@@ -11,7 +11,9 @@ import {Identifiers} from '../identifiers';
 import * as o from '../output/output_ast';
 import {ParseSourceSpan} from '../parse_util';
 
-export class EventHandlerVars { static event = o.variable('$event'); }
+export class EventHandlerVars {
+  static event = o.variable('$event');
+}
 
 export interface LocalResolver {
   getLocal(name: string): o.Expression|null;
@@ -68,7 +70,7 @@ export type InterpolationFunction = (args: o.Expression[]) => o.Expression;
  * used in an action binding (e.g. an event handler).
  */
 export function convertActionBinding(
-    localResolver: LocalResolver | null, implicitReceiver: o.Expression, action: cdAst.AST,
+    localResolver: LocalResolver|null, implicitReceiver: o.Expression, action: cdAst.AST,
     bindingId: string, interpolationFunction?: InterpolationFunction,
     baseSourceSpan?: ParseSourceSpan,
     implicitReceiverAccesses?: Set<string>): ConvertActionBindingResult {
@@ -110,7 +112,7 @@ export function convertActionBinding(
   }
 
   const lastIndex = actionStmts.length - 1;
-  let preventDefaultVar: o.ReadVarExpr = null !;
+  let preventDefaultVar: o.ReadVarExpr = null!;
   if (lastIndex >= 0) {
     const lastStatement = actionStmts[lastIndex];
     const returnExpr = convertStmtIntoExpression(lastStatement);
@@ -126,7 +128,9 @@ export function convertActionBinding(
   return new ConvertActionBindingResult(actionStmts, preventDefaultVar);
 }
 
-export interface BuiltinConverter { (args: o.Expression[]): o.Expression; }
+export interface BuiltinConverter {
+  (args: o.Expression[]): o.Expression;
+}
 
 export interface BuiltinConverterFactory {
   createLiteralArrayConverter(argCount: number): BuiltinConverter;
@@ -158,7 +162,7 @@ export enum BindingForm {
  * `convertPropertyBindingBuiltins`.
  */
 export function convertPropertyBinding(
-    localResolver: LocalResolver | null, implicitReceiver: o.Expression,
+    localResolver: LocalResolver|null, implicitReceiver: o.Expression,
     expressionWithoutBuiltins: cdAst.AST, bindingId: string, form: BindingForm,
     interpolationFunction?: InterpolationFunction): ConvertPropertyBindingResult {
   if (!localResolver) {
@@ -284,7 +288,9 @@ function convertToStatementIfNeeded(mode: _Mode, expr: o.Expression): o.Expressi
 }
 
 class _BuiltinAstConverter extends cdAst.AstTransformer {
-  constructor(private _converterFactory: BuiltinConverterFactory) { super(); }
+  constructor(private _converterFactory: BuiltinConverterFactory) {
+    super();
+  }
   visitPipe(ast: cdAst.BindingPipe, context: any): any {
     const args = [ast.exp, ...ast.args].map(ast => ast.visit(this, context));
     return new BuiltinFunctionCall(
@@ -384,9 +390,10 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
   visitConditional(ast: cdAst.Conditional, mode: _Mode): any {
     const value: o.Expression = this._visit(ast.condition, _Mode.Expression);
     return convertToStatementIfNeeded(
-        mode, value.conditional(
+        mode,
-                  this._visit(ast.trueExp, _Mode.Expression),
+        value.conditional(
-                  this._visit(ast.falseExp, _Mode.Expression), this.convertSourceSpan(ast.span)));
+            this._visit(ast.trueExp, _Mode.Expression), this._visit(ast.falseExp, _Mode.Expression),
+            this.convertSourceSpan(ast.span)));
   }
 
   visitPipe(ast: cdAst.BindingPipe, mode: _Mode): any {
@@ -400,7 +407,7 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
     if (ast instanceof BuiltinFunctionCall) {
       fnResult = ast.converter(convertedArgs);
     } else {
-      fnResult = this._visit(ast.target !, _Mode.Expression)
+      fnResult = this._visit(ast.target!, _Mode.Expression)
                      .callFn(convertedArgs, this.convertSourceSpan(ast.span));
     }
     return convertToStatementIfNeeded(mode, fnResult);
@@ -467,7 +474,9 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
         mode, o.literal(ast.value, type, this.convertSourceSpan(ast.span)));
   }
 
-  private _getLocal(name: string): o.Expression|null { return this._localResolver.getLocal(name); }
+  private _getLocal(name: string): o.Expression|null {
+    return this._localResolver.getLocal(name);
+  }
 
   visitMethodCall(ast: cdAst.MethodCall, mode: _Mode): any {
     if (ast.receiver instanceof cdAst.ImplicitReceiver && ast.name == '$any') {
@@ -558,8 +567,8 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
           // Otherwise it's an error.
           const receiver = ast.name;
           const value = (ast.value instanceof cdAst.PropertyRead) ? ast.value.name : undefined;
-          throw new Error(
+          throw new Error(`Cannot assign value "${value}" to template variable "${
-              `Cannot assign value "${value}" to template variable "${receiver}". Template variables are read-only.`);
+              receiver}". Template variables are read-only.`);
         }
       }
     }
@@ -579,7 +588,9 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
     return this.convertSafeAccess(ast, this.leftMostSafeNode(ast), mode);
   }
 
-  visitAll(asts: cdAst.AST[], mode: _Mode): any { return asts.map(ast => this._visit(ast, mode)); }
+  visitAll(asts: cdAst.AST[], mode: _Mode): any {
+    return asts.map(ast => this._visit(ast, mode));
+  }
 
   visitQuote(ast: cdAst.Quote, mode: _Mode): any {
     throw new Error(`Quotes are not supported for evaluation!
@@ -634,7 +645,7 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
     // which comes in as leftMostSafe to this routine.
 
     let guardedExpression = this._visit(leftMostSafe.receiver, _Mode.Expression);
-    let temporary: o.ReadVarExpr = undefined !;
+    let temporary: o.ReadVarExpr = undefined!;
     if (this.needsTemporary(leftMostSafe.receiver)) {
       // If the expression has method calls or pipes then we need to save the result into a
       // temporary variable to avoid calling stateful or impure code more than once.
@@ -652,12 +663,14 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
     // leftMostNode with its unguarded version in the call to `this.visit()`.
     if (leftMostSafe instanceof cdAst.SafeMethodCall) {
       this._nodeMap.set(
-          leftMostSafe, new cdAst.MethodCall(
+          leftMostSafe,
-                            leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.receiver,
+          new cdAst.MethodCall(
-                            leftMostSafe.name, leftMostSafe.args));
+              leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.receiver, leftMostSafe.name,
+              leftMostSafe.args));
     } else {
       this._nodeMap.set(
-          leftMostSafe, new cdAst.PropertyRead(
+          leftMostSafe,
+          new cdAst.PropertyRead(
               leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.receiver,
               leftMostSafe.name));
     }
@@ -690,25 +703,63 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
       return (this._nodeMap.get(ast) || ast).visit(visitor);
     };
     return ast.visit({
-      visitBinary(ast: cdAst.Binary) { return null; },
+      visitBinary(ast: cdAst.Binary) {
-      visitChain(ast: cdAst.Chain) { return null; },
+        return null;
-      visitConditional(ast: cdAst.Conditional) { return null; },
+      },
-      visitFunctionCall(ast: cdAst.FunctionCall) { return null; },
+      visitChain(ast: cdAst.Chain) {
-      visitImplicitReceiver(ast: cdAst.ImplicitReceiver) { return null; },
+        return null;
-      visitInterpolation(ast: cdAst.Interpolation) { return null; },
+      },
-      visitKeyedRead(ast: cdAst.KeyedRead) { return visit(this, ast.obj); },
+      visitConditional(ast: cdAst.Conditional) {
-      visitKeyedWrite(ast: cdAst.KeyedWrite) { return null; },
+        return null;
-      visitLiteralArray(ast: cdAst.LiteralArray) { return null; },
+      },
-      visitLiteralMap(ast: cdAst.LiteralMap) { return null; },
+      visitFunctionCall(ast: cdAst.FunctionCall) {
-      visitLiteralPrimitive(ast: cdAst.LiteralPrimitive) { return null; },
+        return null;
-      visitMethodCall(ast: cdAst.MethodCall) { return visit(this, ast.receiver); },
+      },
-      visitPipe(ast: cdAst.BindingPipe) { return null; },
+      visitImplicitReceiver(ast: cdAst.ImplicitReceiver) {
-      visitPrefixNot(ast: cdAst.PrefixNot) { return null; },
+        return null;
-      visitNonNullAssert(ast: cdAst.NonNullAssert) { return null; },
+      },
-      visitPropertyRead(ast: cdAst.PropertyRead) { return visit(this, ast.receiver); },
+      visitInterpolation(ast: cdAst.Interpolation) {
-      visitPropertyWrite(ast: cdAst.PropertyWrite) { return null; },
+        return null;
-      visitQuote(ast: cdAst.Quote) { return null; },
+      },
-      visitSafeMethodCall(ast: cdAst.SafeMethodCall) { return visit(this, ast.receiver) || ast; },
+      visitKeyedRead(ast: cdAst.KeyedRead) {
+        return visit(this, ast.obj);
+      },
+      visitKeyedWrite(ast: cdAst.KeyedWrite) {
+        return null;
+      },
+      visitLiteralArray(ast: cdAst.LiteralArray) {
+        return null;
+      },
+      visitLiteralMap(ast: cdAst.LiteralMap) {
+        return null;
+      },
+      visitLiteralPrimitive(ast: cdAst.LiteralPrimitive) {
+        return null;
+      },
+      visitMethodCall(ast: cdAst.MethodCall) {
+        return visit(this, ast.receiver);
+      },
+      visitPipe(ast: cdAst.BindingPipe) {
+        return null;
+      },
+      visitPrefixNot(ast: cdAst.PrefixNot) {
+        return null;
+      },
+      visitNonNullAssert(ast: cdAst.NonNullAssert) {
+        return null;
+      },
+      visitPropertyRead(ast: cdAst.PropertyRead) {
+        return visit(this, ast.receiver);
+      },
+      visitPropertyWrite(ast: cdAst.PropertyWrite) {
+        return null;
+      },
+      visitQuote(ast: cdAst.Quote) {
+        return null;
+      },
+      visitSafeMethodCall(ast: cdAst.SafeMethodCall) {
+        return visit(this, ast.receiver) || ast;
+      },
       visitSafePropertyRead(ast: cdAst.SafePropertyRead) {
         return visit(this, ast.receiver) || ast;
       }
@@ -726,29 +777,66 @@ class _AstToIrVisitor implements cdAst.AstVisitor {
       return ast.some(ast => visit(visitor, ast));
     };
     return ast.visit({
-      visitBinary(ast: cdAst.Binary):
+      visitBinary(ast: cdAst.Binary): boolean {
-          boolean{return visit(this, ast.left) || visit(this, ast.right);},
+        return visit(this, ast.left) || visit(this, ast.right);
-      visitChain(ast: cdAst.Chain) { return false; },
+      },
-      visitConditional(ast: cdAst.Conditional):
+      visitChain(ast: cdAst.Chain) {
-          boolean{return visit(this, ast.condition) || visit(this, ast.trueExp) ||
+        return false;
-                      visit(this, ast.falseExp);},
+      },
-      visitFunctionCall(ast: cdAst.FunctionCall) { return true; },
+      visitConditional(ast: cdAst.Conditional): boolean {
-      visitImplicitReceiver(ast: cdAst.ImplicitReceiver) { return false; },
+        return visit(this, ast.condition) || visit(this, ast.trueExp) || visit(this, ast.falseExp);
-      visitInterpolation(ast: cdAst.Interpolation) { return visitSome(this, ast.expressions); },
+      },
-      visitKeyedRead(ast: cdAst.KeyedRead) { return false; },
+      visitFunctionCall(ast: cdAst.FunctionCall) {
-      visitKeyedWrite(ast: cdAst.KeyedWrite) { return false; },
+        return true;
-      visitLiteralArray(ast: cdAst.LiteralArray) { return true; },
+      },
-      visitLiteralMap(ast: cdAst.LiteralMap) { return true; },
+      visitImplicitReceiver(ast: cdAst.ImplicitReceiver) {
-      visitLiteralPrimitive(ast: cdAst.LiteralPrimitive) { return false; },
+        return false;
-      visitMethodCall(ast: cdAst.MethodCall) { return true; },
+      },
-      visitPipe(ast: cdAst.BindingPipe) { return true; },
+      visitInterpolation(ast: cdAst.Interpolation) {
-      visitPrefixNot(ast: cdAst.PrefixNot) { return visit(this, ast.expression); },
+        return visitSome(this, ast.expressions);
-      visitNonNullAssert(ast: cdAst.PrefixNot) { return visit(this, ast.expression); },
+      },
-      visitPropertyRead(ast: cdAst.PropertyRead) { return false; },
+      visitKeyedRead(ast: cdAst.KeyedRead) {
-      visitPropertyWrite(ast: cdAst.PropertyWrite) { return false; },
+        return false;
-      visitQuote(ast: cdAst.Quote) { return false; },
+      },
-      visitSafeMethodCall(ast: cdAst.SafeMethodCall) { return true; },
+      visitKeyedWrite(ast: cdAst.KeyedWrite) {
-      visitSafePropertyRead(ast: cdAst.SafePropertyRead) { return false; }
+        return false;
+      },
+      visitLiteralArray(ast: cdAst.LiteralArray) {
+        return true;
+      },
+      visitLiteralMap(ast: cdAst.LiteralMap) {
+        return true;
+      },
+      visitLiteralPrimitive(ast: cdAst.LiteralPrimitive) {
+        return false;
+      },
+      visitMethodCall(ast: cdAst.MethodCall) {
+        return true;
+      },
+      visitPipe(ast: cdAst.BindingPipe) {
+        return true;
+      },
+      visitPrefixNot(ast: cdAst.PrefixNot) {
+        return visit(this, ast.expression);
+      },
+      visitNonNullAssert(ast: cdAst.PrefixNot) {
+        return visit(this, ast.expression);
+      },
+      visitPropertyRead(ast: cdAst.PropertyRead) {
+        return false;
+      },
+      visitPropertyWrite(ast: cdAst.PropertyWrite) {
+        return false;
+      },
+      visitQuote(ast: cdAst.Quote) {
+        return false;
+      },
+      visitSafeMethodCall(ast: cdAst.SafeMethodCall) {
+        return true;
+      },
+      visitSafePropertyRead(ast: cdAst.SafePropertyRead) {
+        return false;
+      }
     });
   }
 

packages/compiler/src/config.ts

@@ -20,9 +20,14 @@ export class CompilerConfig {
   public preserveWhitespaces: boolean;
   public strictInjectionParameters: boolean;
 
-  constructor(
+  constructor({
-      {defaultEncapsulation = ViewEncapsulation.Emulated, useJit = true, jitDevMode = false,
+    defaultEncapsulation = ViewEncapsulation.Emulated,
-       missingTranslation = null, preserveWhitespaces, strictInjectionParameters}: {
+    useJit = true,
+    jitDevMode = false,
+    missingTranslation = null,
+    preserveWhitespaces,
+    strictInjectionParameters
+  }: {
     defaultEncapsulation?: ViewEncapsulation,
     useJit?: boolean,
     jitDevMode?: boolean,
@@ -40,6 +45,6 @@ export class CompilerConfig {
 }
 
 export function preserveWhitespacesDefault(
-    preserveWhitespacesOption: boolean | null, defaultSetting = false): boolean {
+    preserveWhitespacesOption: boolean|null, defaultSetting = false): boolean {
   return preserveWhitespacesOption === null ? defaultSetting : preserveWhitespacesOption;
 }

packages/compiler/src/constant_pool.ts

@@ -7,7 +7,7 @@
  */
 
 import * as o from './output/output_ast';
-import {OutputContext, error} from './util';
+import {error, OutputContext} from './util';
 
 const CONSTANT_PREFIX = '_c';
 
@@ -21,7 +21,12 @@ const CONSTANT_PREFIX = '_c';
  */
 const UNKNOWN_VALUE_KEY = o.variable('<unknown>');
 
-export const enum DefinitionKind {Injector, Directive, Component, Pipe}
+export const enum DefinitionKind {
+  Injector,
+  Directive,
+  Component,
+  Pipe
+}
 
 /**
  * Context to use when producing a key.
@@ -43,7 +48,7 @@ class FixupExpression extends o.Expression {
   private original: o.Expression;
 
   // TODO(issue/24571): remove '!'.
-  shared !: boolean;
+  shared!: boolean;
 
   constructor(public resolved: o.Expression) {
     super(resolved.type);
@@ -64,7 +69,9 @@ class FixupExpression extends o.Expression {
     return e instanceof FixupExpression && this.resolved.isEquivalent(e.resolved);
   }
 
-  isConstant() { return true; }
+  isConstant() {
+    return true;
+  }
 
   fixup(expression: o.Expression) {
     this.resolved = expression;
@@ -169,7 +176,7 @@ export class ConstantPool {
       const resultExpressions = values.map(
           (e, index) => e.isConstant() ? this.getConstLiteral(e, true) : o.variable(`a${index}`));
       const parameters =
-          resultExpressions.filter(isVariable).map(e => new o.FnParam(e.name !, o.DYNAMIC_TYPE));
+          resultExpressions.filter(isVariable).map(e => new o.FnParam(e.name!, o.DYNAMIC_TYPE));
       const pureFunctionDeclaration =
           o.fn(parameters, [new o.ReturnStatement(resultMap(resultExpressions))], o.INFERRED_TYPE);
       const name = this.freshName();
@@ -190,7 +197,9 @@ export class ConstantPool {
    * a digit so the prefix should be a constant string (not based on user input) and
    * must not end in a digit.
    */
-  uniqueName(prefix: string): string { return `${prefix}${this.nextNameIndex++}`; }
+  uniqueName(prefix: string): string {
+    return `${prefix}${this.nextNameIndex++}`;
+  }
 
   private definitionsOf(kind: DefinitionKind): Map<any, FixupExpression> {
     switch (kind) {
@@ -222,7 +231,9 @@ export class ConstantPool {
     return '<unknown>';
   }
 
-  private freshName(): string { return this.uniqueName(CONSTANT_PREFIX); }
+  private freshName(): string {
+    return this.uniqueName(CONSTANT_PREFIX);
+  }
 
   private keyOf(expression: o.Expression) {
     return expression.visitExpression(new KeyVisitor(), KEY_CONTEXT);
@@ -259,7 +270,9 @@ class KeyVisitor implements o.ExpressionVisitor {
                                   `EX:${ast.value.runtime.name}`;
   }
 
-  visitReadVarExpr(node: o.ReadVarExpr) { return `VAR:${node.name}`; }
+  visitReadVarExpr(node: o.ReadVarExpr) {
+    return `VAR:${node.name}`;
+  }
 
   visitTypeofExpr(node: o.TypeofExpr, context: any): string {
     return `TYPEOF:${node.expr.visitExpression(this, context)}`;
@@ -284,7 +297,7 @@ class KeyVisitor implements o.ExpressionVisitor {
   visitLocalizedString = invalid;
 }
 
-function invalid<T>(this: o.ExpressionVisitor, arg: o.Expression | o.Statement): never {
+function invalid<T>(this: o.ExpressionVisitor, arg: o.Expression|o.Statement): never {
   throw new Error(
       `Invalid state: Visitor ${this.constructor.name} doesn't handle ${arg.constructor.name}`);
 }

packages/compiler/src/core.ts

@@ -14,12 +14,16 @@
 
 import {CssSelector} from './selector';
 
-export interface Inject { token: any; }
+export interface Inject {
+  token: any;
+}
 export const createInject = makeMetadataFactory<Inject>('Inject', (token: any) => ({token}));
 export const createInjectionToken = makeMetadataFactory<object>(
     'InjectionToken', (desc: string) => ({_desc: desc, ɵprov: undefined}));
 
-export interface Attribute { attributeName?: string; }
+export interface Attribute {
+  attributeName?: string;
+}
 export const createAttribute =
     makeMetadataFactory<Attribute>('Attribute', (attributeName?: string) => ({attributeName}));
 
@@ -37,13 +41,16 @@ export const createContentChildren = makeMetadataFactory<Query>(
     (selector?: any, data: any = {}) =>
         ({selector, first: false, isViewQuery: false, descendants: false, ...data}));
 export const createContentChild = makeMetadataFactory<Query>(
-    'ContentChild', (selector?: any, data: any = {}) =>
+    'ContentChild',
+    (selector?: any, data: any = {}) =>
         ({selector, first: true, isViewQuery: false, descendants: true, ...data}));
 export const createViewChildren = makeMetadataFactory<Query>(
-    'ViewChildren', (selector?: any, data: any = {}) =>
+    'ViewChildren',
+    (selector?: any, data: any = {}) =>
         ({selector, first: false, isViewQuery: true, descendants: true, ...data}));
 export const createViewChild = makeMetadataFactory<Query>(
-    'ViewChild', (selector: any, data: any) =>
+    'ViewChild',
+    (selector: any, data: any) =>
         ({selector, first: true, isViewQuery: true, descendants: true, ...data}));
 
 export interface Directive {
@@ -94,15 +101,21 @@ export interface Pipe {
 }
 export const createPipe = makeMetadataFactory<Pipe>('Pipe', (p: Pipe) => ({pure: true, ...p}));
 
-export interface Input { bindingPropertyName?: string; }
+export interface Input {
+  bindingPropertyName?: string;
+}
 export const createInput =
     makeMetadataFactory<Input>('Input', (bindingPropertyName?: string) => ({bindingPropertyName}));
 
-export interface Output { bindingPropertyName?: string; }
+export interface Output {
+  bindingPropertyName?: string;
+}
 export const createOutput = makeMetadataFactory<Output>(
     'Output', (bindingPropertyName?: string) => ({bindingPropertyName}));
 
-export interface HostBinding { hostPropertyName?: string; }
+export interface HostBinding {
+  hostPropertyName?: string;
+}
 export const createHostBinding = makeMetadataFactory<HostBinding>(
     'HostBinding', (hostPropertyName?: string) => ({hostPropertyName}));
 
@@ -140,7 +153,9 @@ export interface Injectable {
 }
 export const createInjectable =
     makeMetadataFactory('Injectable', (injectable: Injectable = {}) => injectable);
-export interface SchemaMetadata { name: string; }
+export interface SchemaMetadata {
+  name: string;
+}
 
 export const CUSTOM_ELEMENTS_SCHEMA: SchemaMetadata = {
   name: 'custom-elements'
@@ -155,7 +170,9 @@ export const createSelf = makeMetadataFactory('Self');
 export const createSkipSelf = makeMetadataFactory('SkipSelf');
 export const createHost = makeMetadataFactory('Host');
 
-export interface Type extends Function { new (...args: any[]): any; }
+export interface Type extends Function {
+  new(...args: any[]): any;
+}
 export const Type = Function;
 
 export enum SecurityContext {
@@ -240,7 +257,10 @@ export const enum InjectFlags {
   Optional = 1 << 3,
 }
 
-export const enum ArgumentType {Inline = 0, Dynamic = 1}
+export const enum ArgumentType {
+  Inline = 0,
+  Dynamic = 1
+}
 
 export const enum BindingFlags {
   TypeElementAttribute = 1 << 0,
@@ -255,7 +275,10 @@ export const enum BindingFlags {
   Types = TypeElementAttribute | TypeElementClass | TypeElementStyle | TypeProperty
 }
 
-export const enum QueryBindingType {First = 0, All = 1}
+export const enum QueryBindingType {
+  First = 0,
+  All = 1
+}
 
 export const enum QueryValueType {
   ElementRef = 0,
@@ -324,7 +347,7 @@ export const enum SelectorFlags {
 
 // These are a copy the CSS types from core/src/render3/interfaces/projection.ts
 // They are duplicated here as they cannot be directly referenced from core.
-export type R3CssSelector = (string | SelectorFlags)[];
+export type R3CssSelector = (string|SelectorFlags)[];
 export type R3CssSelectorList = R3CssSelector[];
 
 function parserSelectorToSimpleSelector(selector: CssSelector): R3CssSelector {
@@ -363,7 +386,7 @@ function parserSelectorToR3Selector(selector: CssSelector): R3CssSelector {
   return positive.concat(...negative);
 }
 
-export function parseSelectorToR3Selector(selector: string | null): R3CssSelectorList {
+export function parseSelectorToR3Selector(selector: string|null): R3CssSelectorList {
   return selector ? CssSelector.parse(selector).map(parserSelectorToR3Selector) : [];
 }
 

packages/compiler/src/css_parser/css_ast.ts

@@ -46,8 +46,12 @@ export interface CssAstVisitor {
 
 export abstract class CssAst {
   constructor(public location: ParseSourceSpan) {}
-  get start(): ParseLocation { return this.location.start; }
+  get start(): ParseLocation {
-  get end(): ParseLocation { return this.location.end; }
+    return this.location.start;
+  }
+  get end(): ParseLocation {
+    return this.location.end;
+  }
   abstract visit(visitor: CssAstVisitor, context?: any): any;
 }
 
@@ -55,11 +59,15 @@ export class CssStyleValueAst extends CssAst {
   constructor(location: ParseSourceSpan, public tokens: CssToken[], public strValue: string) {
     super(location);
   }
-  visit(visitor: CssAstVisitor, context?: any): any { return visitor.visitCssValue(this); }
+  visit(visitor: CssAstVisitor, context?: any): any {
+    return visitor.visitCssValue(this);
+  }
 }
 
 export abstract class CssRuleAst extends CssAst {
-  constructor(location: ParseSourceSpan) { super(location); }
+  constructor(location: ParseSourceSpan) {
+    super(location);
+  }
 }
 
 export class CssBlockRuleAst extends CssRuleAst {
@@ -158,7 +166,9 @@ export class CssDefinitionAst extends CssAst {
 }
 
 export abstract class CssSelectorPartAst extends CssAst {
-  constructor(location: ParseSourceSpan) { super(location); }
+  constructor(location: ParseSourceSpan) {
+    super(location);
+  }
 }
 
 export class CssSelectorAst extends CssSelectorPartAst {
@@ -195,8 +205,12 @@ export class CssPseudoSelectorAst extends CssSelectorPartAst {
 }
 
 export class CssBlockAst extends CssAst {
-  constructor(location: ParseSourceSpan, public entries: CssAst[]) { super(location); }
+  constructor(location: ParseSourceSpan, public entries: CssAst[]) {
-  visit(visitor: CssAstVisitor, context?: any): any { return visitor.visitCssBlock(this, context); }
+    super(location);
+  }
+  visit(visitor: CssAstVisitor, context?: any): any {
+    return visitor.visitCssBlock(this, context);
+  }
 }
 
 /*
@@ -213,7 +227,9 @@ export class CssStylesBlockAst extends CssBlockAst {
 }
 
 export class CssStyleSheetAst extends CssAst {
-  constructor(location: ParseSourceSpan, public rules: CssAst[]) { super(location); }
+  constructor(location: ParseSourceSpan, public rules: CssAst[]) {
+    super(location);
+  }
   visit(visitor: CssAstVisitor, context?: any): any {
     return visitor.visitCssStyleSheet(this, context);
   }

packages/compiler/src/css_parser/css_lexer.ts

@@ -117,7 +117,7 @@ function _trackWhitespace(mode: CssLexerMode) {
 
 export class CssScanner {
   // TODO(issue/24571): remove '!'.
-  peek !: number;
+  peek!: number;
   peekPeek: number;
   length: number = 0;
   index: number = -1;
@@ -135,7 +135,9 @@ export class CssScanner {
     this.advance();
   }
 
-  getMode(): CssLexerMode { return this._currentMode; }
+  getMode(): CssLexerMode {
+    return this._currentMode;
+  }
 
   setMode(mode: CssLexerMode) {
     if (this._currentMode != mode) {
@@ -198,7 +200,7 @@ export class CssScanner {
     const previousLine = this.line;
     const previousColumn = this.column;
 
-    let next: CssToken = undefined !;
+    let next: CssToken = undefined!;
     const output = this.scan();
     if (output != null) {
       // just incase the inner scan method returned an error
@@ -236,7 +238,8 @@ export class CssScanner {
       }
 
       error = cssScannerError(
-          next, generateErrorMessage(
+          next,
+          generateErrorMessage(
               this.input, errorMessage, next.strValue, previousIndex, previousLine,
               previousColumn));
     }
@@ -254,7 +257,7 @@ export class CssScanner {
     const token = this._scan();
     if (token == null) return null;
 
-    const error = this._currentError !;
+    const error = this._currentError!;
     this._currentError = null;
 
     if (!trackWS) {
@@ -461,7 +464,7 @@ export class CssScanner {
     const startingColumn = this.column;
     this.advance();
     if (isIdentifierStart(this.peek, this.peekPeek)) {
-      const ident = this.scanIdentifier() !;
+      const ident = this.scanIdentifier()!;
       const strValue = '@' + ident.strValue;
       return new CssToken(start, startingColumn, this.line, CssTokenType.AtKeyword, strValue);
     } else {

packages/compiler/src/css_parser/css_parser.ts

@@ -9,7 +9,7 @@
 import * as chars from '../chars';
 import {ParseError, ParseLocation, ParseSourceFile, ParseSourceSpan} from '../parse_util';
 
-import {BlockType, CssAst, CssAtRulePredicateAst, CssBlockAst, CssBlockDefinitionRuleAst, CssBlockRuleAst, CssDefinitionAst, CssInlineRuleAst, CssKeyframeDefinitionAst, CssKeyframeRuleAst, CssMediaQueryRuleAst, CssPseudoSelectorAst, CssRuleAst, CssSelectorAst, CssSelectorRuleAst, CssSimpleSelectorAst, CssStyleSheetAst, CssStyleValueAst, CssStylesBlockAst, CssUnknownRuleAst, CssUnknownTokenListAst, mergeTokens} from './css_ast';
+import {BlockType, CssAst, CssAtRulePredicateAst, CssBlockAst, CssBlockDefinitionRuleAst, CssBlockRuleAst, CssDefinitionAst, CssInlineRuleAst, CssKeyframeDefinitionAst, CssKeyframeRuleAst, CssMediaQueryRuleAst, CssPseudoSelectorAst, CssRuleAst, CssSelectorAst, CssSelectorRuleAst, CssSimpleSelectorAst, CssStylesBlockAst, CssStyleSheetAst, CssStyleValueAst, CssUnknownRuleAst, CssUnknownTokenListAst, mergeTokens} from './css_ast';
 import {CssLexer, CssLexerMode, CssScanner, CssToken, CssTokenType, generateErrorMessage, getRawMessage, isNewline} from './css_lexer';
 
 const SPACE_OPERATOR = ' ';
@@ -84,11 +84,11 @@ export class ParsedCssResult {
 export class CssParser {
   private _errors: CssParseError[] = [];
   // TODO(issue/24571): remove '!'.
-  private _file !: ParseSourceFile;
+  private _file!: ParseSourceFile;
   // TODO(issue/24571): remove '!'.
-  private _scanner !: CssScanner;
+  private _scanner!: CssScanner;
   // TODO(issue/24571): remove '!'.
-  private _lastToken !: CssToken;
+  private _lastToken!: CssToken;
 
   /**
    * @param css the CSS code that will be parsed
@@ -125,11 +125,13 @@ export class CssParser {
       // EOF token that was emitted sometime during the lexing
       span = this._generateSourceSpan(firstRule, this._lastToken);
     }
-    return new CssStyleSheetAst(span !, results);
+    return new CssStyleSheetAst(span!, results);
   }
 
   /** @internal */
-  _getSourceContent(): string { return this._scanner != null ? this._scanner.input : ''; }
+  _getSourceContent(): string {
+    return this._scanner != null ? this._scanner.input : '';
+  }
 
   /** @internal */
   _extractSourceContent(start: number, end: number): string {
@@ -159,9 +161,9 @@ export class CssParser {
     let endColumn: number = -1;
     let endIndex: number = -1;
     if (end instanceof CssAst) {
-      endLine = end.location.end.line !;
+      endLine = end.location.end.line!;
-      endColumn = end.location.end.col !;
+      endColumn = end.location.end.col!;
-      endIndex = end.location.end.offset !;
+      endIndex = end.location.end.offset!;
     } else if (end instanceof CssToken) {
       endLine = end.line;
       endColumn = end.column;
@@ -253,7 +255,7 @@ export class CssParser {
 
       case BlockType.Viewport:
       case BlockType.FontFace:
-        block = this._parseStyleBlock(delimiters) !;
+        block = this._parseStyleBlock(delimiters)!;
         span = this._generateSourceSpan(startToken, block);
         return new CssBlockRuleAst(span, type, block);
 
@@ -293,7 +295,7 @@ export class CssParser {
         span = this._generateSourceSpan(startToken, tokens[tokens.length - 1]);
         query = new CssAtRulePredicateAst(span, strValue, tokens);
         block = this._parseBlock(delimiters);
-        strValue = this._extractSourceContent(start, block.end.offset !);
+        strValue = this._extractSourceContent(start, block.end.offset!);
         span = this._generateSourceSpan(startToken, block);
         return new CssBlockDefinitionRuleAst(span, strValue, type, query, block);
 
@@ -310,11 +312,15 @@ export class CssParser {
             token);
 
         this._collectUntilDelim(delimiters | LBRACE_DELIM_FLAG | SEMICOLON_DELIM_FLAG)
-            .forEach((token) => { listOfTokens.push(token); });
+            .forEach((token) => {
+              listOfTokens.push(token);
+            });
         if (this._scanner.peek == chars.$LBRACE) {
           listOfTokens.push(this._consume(CssTokenType.Character, '{'));
           this._collectUntilDelim(delimiters | RBRACE_DELIM_FLAG | LBRACE_DELIM_FLAG)
-              .forEach((token) => { listOfTokens.push(token); });
+              .forEach((token) => {
+                listOfTokens.push(token);
+              });
           listOfTokens.push(this._consume(CssTokenType.Character, '}'));
         }
         endToken = listOfTokens[listOfTokens.length - 1];
@@ -339,7 +345,9 @@ export class CssParser {
       const innerTokens: CssToken[] = [];
       selectors.forEach((selector: CssSelectorAst) => {
         selector.selectorParts.forEach((part: CssSimpleSelectorAst) => {
-          part.tokens.forEach((token: CssToken) => { innerTokens.push(token); });
+          part.tokens.forEach((token: CssToken) => {
+            innerTokens.push(token);
+          });
         });
       });
       const endToken = innerTokens[innerTokens.length - 1];
@@ -376,7 +384,7 @@ export class CssParser {
 
   /** @internal */
   _scan(): CssToken {
-    const output = this._scanner.scan() !;
+    const output = this._scanner.scan()!;
     const token = output.token;
     const error = output.error;
     if (error != null) {
@@ -387,7 +395,9 @@ export class CssParser {
   }
 
   /** @internal */
-  _getScannerIndex(): number { return this._scanner.index; }
+  _getScannerIndex(): number {
+    return this._scanner.index;
+  }
 
   /** @internal */
   _consume(type: CssTokenType, value: string|null = null): CssToken {
@@ -432,7 +442,7 @@ export class CssParser {
     }
     const stylesBlock = this._parseStyleBlock(delimiters | RBRACE_DELIM_FLAG);
     const span = this._generateSourceSpan(stepTokens[0], stylesBlock);
-    const ast = new CssKeyframeDefinitionAst(span, stepTokens, stylesBlock !);
+    const ast = new CssKeyframeDefinitionAst(span, stepTokens, stylesBlock!);
 
     this._scanner.setMode(CssLexerMode.BLOCK);
     return ast;
@@ -523,7 +533,7 @@ export class CssParser {
     const selectorCssTokens: CssToken[] = [];
     const pseudoSelectors: CssPseudoSelectorAst[] = [];
 
-    let previousToken: CssToken = undefined !;
+    let previousToken: CssToken = undefined!;
 
     const selectorPartDelimiters = delimiters | SPACE_DELIM_FLAG;
     let loopOverSelector = !characterContainsDelimiter(this._scanner.peek, selectorPartDelimiters);
@@ -576,7 +586,8 @@ export class CssParser {
         hasAttributeError || this._scanner.getMode() == CssLexerMode.ATTRIBUTE_SELECTOR;
     if (hasAttributeError) {
       this._error(
-          `Unbalanced CSS attribute selector at column ${previousToken.line}:${previousToken.column}`,
+          `Unbalanced CSS attribute selector at column ${previousToken.line}:${
+              previousToken.column}`,
           previousToken);
     }
 
@@ -671,8 +682,8 @@ export class CssParser {
       endTokenOrAst = operator;
     }
 
-    const span = this._generateSourceSpan(startTokenOrAst !, endTokenOrAst);
+    const span = this._generateSourceSpan(startTokenOrAst!, endTokenOrAst);
-    return new CssSimpleSelectorAst(span, selectorCssTokens, strValue, pseudoSelectors, operator !);
+    return new CssSimpleSelectorAst(span, selectorCssTokens, strValue, pseudoSelectors, operator!);
   }
 
   /** @internal */
@@ -701,7 +712,7 @@ export class CssParser {
 
     const tokens: CssToken[] = [];
     let wsStr = '';
-    let previous: CssToken = undefined !;
+    let previous: CssToken = undefined!;
     while (!characterContainsDelimiter(this._scanner.peek, delimiters)) {
       let token: CssToken;
       if (previous != null && previous.type == CssTokenType.Identifier &&
@@ -841,7 +852,9 @@ export class CssParser {
           const remainingTokens = this._collectUntilDelim(
               delimiters | COLON_DELIM_FLAG | SEMICOLON_DELIM_FLAG, CssTokenType.Identifier);
           if (remainingTokens.length > 0) {
-            remainingTokens.forEach((token) => { propStr.push(token.strValue); });
+            remainingTokens.forEach((token) => {
+              propStr.push(token.strValue);
+            });
           }
 
           endToken = prop =
@@ -868,7 +881,7 @@ export class CssParser {
     }
 
     const span = this._generateSourceSpan(prop, endToken);
-    return new CssDefinitionAst(span, prop, value !);
+    return new CssDefinitionAst(span, prop, value!);
   }
 
   /** @internal */
@@ -899,5 +912,7 @@ export class CssParseError extends ParseError {
     return new CssParseError(span, 'CSS Parse Error: ' + errMsg);
   }
 
-  constructor(span: ParseSourceSpan, message: string) { super(span, message); }
+  constructor(span: ParseSourceSpan, message: string) {
+    super(span, message);
+  }
 }

packages/compiler/src/directive_normalizer.ts

@@ -17,7 +17,7 @@ import {ResourceLoader} from './resource_loader';
 import {extractStyleUrls, isStyleUrlResolvable} from './style_url_resolver';
 import {PreparsedElementType, preparseElement} from './template_parser/template_preparser';
 import {UrlResolver} from './url_resolver';
-import {SyncAsync, isDefined, stringify, syntaxError} from './util';
+import {isDefined, stringify, SyncAsync, syntaxError} from './util';
 
 export interface PrenormalizedTemplateMetadata {
   ngModuleType: any;
@@ -40,16 +40,19 @@ export class DirectiveNormalizer {
       private _resourceLoader: ResourceLoader, private _urlResolver: UrlResolver,
       private _htmlParser: HtmlParser, private _config: CompilerConfig) {}
 
-  clearCache(): void { this._resourceLoaderCache.clear(); }
+  clearCache(): void {
+    this._resourceLoaderCache.clear();
+  }
 
   clearCacheFor(normalizedDirective: CompileDirectiveMetadata): void {
     if (!normalizedDirective.isComponent) {
       return;
     }
     const template = normalizedDirective.template !;
-    this._resourceLoaderCache.delete(template.templateUrl !);
+    this._resourceLoaderCache.delete(template.templateUrl!);
-    template.externalStylesheets.forEach(
+    template.externalStylesheets.forEach((stylesheet) => {
-        (stylesheet) => { this._resourceLoaderCache.delete(stylesheet.moduleUrl !); });
+      this._resourceLoaderCache.delete(stylesheet.moduleUrl!);
+    });
   }
 
   private _fetch(url: string): SyncAsync<string> {
@@ -65,17 +68,18 @@ export class DirectiveNormalizer {
       SyncAsync<CompileTemplateMetadata> {
     if (isDefined(prenormData.template)) {
       if (isDefined(prenormData.templateUrl)) {
-        throw syntaxError(
+        throw syntaxError(`'${
-            `'${stringify(prenormData.componentType)}' component cannot define both template and templateUrl`);
+            stringify(prenormData
+                          .componentType)}' component cannot define both template and templateUrl`);
       }
       if (typeof prenormData.template !== 'string') {
-        throw syntaxError(
+        throw syntaxError(`The template specified for component ${
-            `The template specified for component ${stringify(prenormData.componentType)} is not a string`);
+            stringify(prenormData.componentType)} is not a string`);
       }
     } else if (isDefined(prenormData.templateUrl)) {
       if (typeof prenormData.templateUrl !== 'string') {
-        throw syntaxError(
+        throw syntaxError(`The templateUrl specified for component ${
-            `The templateUrl specified for component ${stringify(prenormData.componentType)} is not a string`);
+            stringify(prenormData.componentType)} is not a string`);
       }
     } else {
       throw syntaxError(
@@ -84,8 +88,8 @@ export class DirectiveNormalizer {
 
     if (isDefined(prenormData.preserveWhitespaces) &&
         typeof prenormData.preserveWhitespaces !== 'boolean') {
-      throw syntaxError(
+      throw syntaxError(`The preserveWhitespaces option for component ${
-          `The preserveWhitespaces option for component ${stringify(prenormData.componentType)} must be a boolean`);
+          stringify(prenormData.componentType)} must be a boolean`);
     }
 
     return SyncAsync.then(
@@ -101,7 +105,7 @@ export class DirectiveNormalizer {
       template = prenomData.template;
       templateUrl = prenomData.moduleUrl;
     } else {
-      templateUrl = this._urlResolver.resolve(prenomData.moduleUrl, prenomData.templateUrl !);
+      templateUrl = this._urlResolver.resolve(prenomData.moduleUrl, prenomData.templateUrl!);
       template = this._fetch(templateUrl);
     }
     return SyncAsync.then(
@@ -112,7 +116,7 @@ export class DirectiveNormalizer {
       prenormData: PrenormalizedTemplateMetadata, template: string,
       templateAbsUrl: string): PreparsedTemplate {
     const isInline = !!prenormData.template;
-    const interpolationConfig = InterpolationConfig.fromArray(prenormData.interpolation !);
+    const interpolationConfig = InterpolationConfig.fromArray(prenormData.interpolation!);
     const templateUrl = templateSourceUrl(
         {reference: prenormData.ngModuleType}, {type: {reference: prenormData.componentType}},
         {isInline, templateUrl: templateAbsUrl});
@@ -140,8 +144,12 @@ export class DirectiveNormalizer {
                           .styleUrls;
     return {
       template,
-      templateUrl: templateAbsUrl, isInline,
+      templateUrl: templateAbsUrl,
-      htmlAst: rootNodesAndErrors, styles, inlineStyleUrls, styleUrls,
+      isInline,
+      htmlAst: rootNodesAndErrors,
+      styles,
+      inlineStyleUrls,
+      styleUrls,
       ngContentSelectors: visitor.ngContentSelectors,
     };
   }
@@ -172,7 +180,7 @@ export class DirectiveNormalizer {
     const styleUrls = preparsedTemplate.styleUrls;
 
     const externalStylesheets = styleUrls.map(styleUrl => {
-      const stylesheet = stylesheets.get(styleUrl) !;
+      const stylesheet = stylesheets.get(styleUrl)!;
       const styles = [...stylesheet.styles];
       this._inlineStyles(stylesheet.styleUrls, stylesheets, styles);
       return new CompileStylesheetMetadata({moduleUrl: styleUrl, styles: styles});
@@ -190,11 +198,14 @@ export class DirectiveNormalizer {
       encapsulation,
       template: preparsedTemplate.template,
       templateUrl: preparsedTemplate.templateUrl,
-      htmlAst: preparsedTemplate.htmlAst, styles, styleUrls,
+      htmlAst: preparsedTemplate.htmlAst,
+      styles,
+      styleUrls,
       ngContentSelectors: preparsedTemplate.ngContentSelectors,
       animations: prenormData.animations,
       interpolation: prenormData.interpolation,
-      isInline: preparsedTemplate.isInline, externalStylesheets,
+      isInline: preparsedTemplate.isInline,
+      externalStylesheets,
       preserveWhitespaces: preserveWhitespacesDefault(
           prenormData.preserveWhitespaces, this._config.preserveWhitespaces),
     });
@@ -204,7 +215,7 @@ export class DirectiveNormalizer {
       styleUrls: string[], stylesheets: Map<string, CompileStylesheetMetadata>,
       targetStyles: string[]) {
     styleUrls.forEach(styleUrl => {
-      const stylesheet = stylesheets.get(styleUrl) !;
+      const stylesheet = stylesheets.get(styleUrl)!;
       stylesheet.styles.forEach(style => targetStyles.push(style));
       this._inlineStyles(stylesheet.styleUrls, stylesheets, targetStyles);
     });
@@ -232,7 +243,7 @@ export class DirectiveNormalizer {
   }
 
   private _normalizeStylesheet(stylesheet: CompileStylesheetMetadata): CompileStylesheetMetadata {
-    const moduleUrl = stylesheet.moduleUrl !;
+    const moduleUrl = stylesheet.moduleUrl!;
     const allStyleUrls = stylesheet.styleUrls.filter(isStyleUrlResolvable)
                              .map(url => this._urlResolver.resolve(moduleUrl, url));
 
@@ -297,13 +308,21 @@ class TemplatePreparseVisitor implements html.Visitor {
     return null;
   }
 
-  visitExpansion(ast: html.Expansion, context: any): any { html.visitAll(this, ast.cases); }
+  visitExpansion(ast: html.Expansion, context: any): any {
+    html.visitAll(this, ast.cases);
+  }
 
   visitExpansionCase(ast: html.ExpansionCase, context: any): any {
     html.visitAll(this, ast.expression);
   }
 
-  visitComment(ast: html.Comment, context: any): any { return null; }
+  visitComment(ast: html.Comment, context: any): any {
-  visitAttribute(ast: html.Attribute, context: any): any { return null; }
+    return null;
-  visitText(ast: html.Text, context: any): any { return null; }
+  }
+  visitAttribute(ast: html.Attribute, context: any): any {
+    return null;
+  }
+  visitText(ast: html.Text, context: any): any {
+    return null;
+  }
 }

packages/compiler/src/directive_resolver.ts

@@ -7,7 +7,7 @@
  */
 
 import {CompileReflector} from './compile_reflector';
-import {Component, Directive, Type, createComponent, createContentChild, createContentChildren, createDirective, createHostBinding, createHostListener, createInput, createOutput, createViewChild, createViewChildren} from './core';
+import {Component, createComponent, createContentChild, createContentChildren, createDirective, createHostBinding, createHostListener, createInput, createOutput, createViewChild, createViewChildren, Directive, Type} from './core';
 import {resolveForwardRef, splitAtColon, stringify} from './util';
 
 const QUERY_METADATA_IDENTIFIERS = [
@@ -109,7 +109,9 @@ export class DirectiveResolver {
     return this._merge(dm, inputs, outputs, host, queries, guards, directiveType);
   }
 
-  private _extractPublicName(def: string) { return splitAtColon(def, [null !, def])[1].trim(); }
+  private _extractPublicName(def: string) {
+    return splitAtColon(def, [null!, def])[1].trim();
+  }
 
   private _dedupeBindings(bindings: string[]): string[] {
     const names = new Set<string>();
@@ -168,7 +170,8 @@ export class DirectiveResolver {
         host: mergedHost,
         exportAs: directive.exportAs,
         queries: mergedQueries,
-        providers: directive.providers, guards
+        providers: directive.providers,
+        guards
       });
     }
   }

packages/compiler/src/expression_parser/ast.ts

@@ -31,8 +31,12 @@ export class AST {
        * Absolute location of the expression AST in a source code file.
        */
       public sourceSpan: AbsoluteSourceSpan) {}
-  visit(visitor: AstVisitor, context: any = null): any { return null; }
+  visit(visitor: AstVisitor, context: any = null): any {
-  toString(): string { return 'AST'; }
+    return null;
+  }
+  toString(): string {
+    return 'AST';
+  }
 }
 
 /**
@@ -54,8 +58,12 @@ export class Quote extends AST {
       public uninterpretedExpression: string, public location: any) {
     super(span, sourceSpan);
   }
-  visit(visitor: AstVisitor, context: any = null): any { return visitor.visitQuote(this, context); }
+  visit(visitor: AstVisitor, context: any = null): any {
-  toString(): string { return 'Quote'; }
+    return visitor.visitQuote(this, context);
+  }
+  toString(): string {
+    return 'Quote';
+  }
 }
 
 export class EmptyExpr extends AST {
@@ -77,7 +85,9 @@ export class Chain extends AST {
   constructor(span: ParseSpan, sourceSpan: AbsoluteSourceSpan, public expressions: any[]) {
     super(span, sourceSpan);
   }
-  visit(visitor: AstVisitor, context: any = null): any { return visitor.visitChain(this, context); }
+  visit(visitor: AstVisitor, context: any = null): any {
+    return visitor.visitChain(this, context);
+  }
 }
 
 export class Conditional extends AST {
@@ -148,7 +158,9 @@ export class BindingPipe extends AST {
       public args: any[], public nameSpan: AbsoluteSourceSpan) {
     super(span, sourceSpan);
   }
-  visit(visitor: AstVisitor, context: any = null): any { return visitor.visitPipe(this, context); }
+  visit(visitor: AstVisitor, context: any = null): any {
+    return visitor.visitPipe(this, context);
+  }
 }
 
 export class LiteralPrimitive extends AST {
@@ -280,7 +292,9 @@ export class ASTWithSource extends AST {
     }
     return this.ast.visit(visitor, context);
   }
-  toString(): string { return `${this.source} in ${this.location}`; }
+  toString(): string {
+    return `${this.source} in ${this.location}`;
+  }
 }
 
 /**
@@ -302,7 +316,7 @@ export class ASTWithSource extends AST {
  * the LHS of a HTML attribute to the expression in the RHS. All other bindings
  * in the example above are derived solely from the RHS.
  */
-export type TemplateBinding = VariableBinding | ExpressionBinding;
+export type TemplateBinding = VariableBinding|ExpressionBinding;
 
 export class VariableBinding {
   /**
@@ -379,7 +393,9 @@ export class RecursiveAstVisitor implements AstVisitor {
     this.visit(ast.left, context);
     this.visit(ast.right, context);
   }
-  visitChain(ast: Chain, context: any): any { this.visitAll(ast.expressions, context); }
+  visitChain(ast: Chain, context: any): any {
+    this.visitAll(ast.expressions, context);
+  }
   visitConditional(ast: Conditional, context: any): any {
     this.visit(ast.condition, context);
     this.visit(ast.trueExp, context);
@@ -411,15 +427,23 @@ export class RecursiveAstVisitor implements AstVisitor {
   visitLiteralArray(ast: LiteralArray, context: any): any {
     this.visitAll(ast.expressions, context);
   }
-  visitLiteralMap(ast: LiteralMap, context: any): any { this.visitAll(ast.values, context); }
+  visitLiteralMap(ast: LiteralMap, context: any): any {
+    this.visitAll(ast.values, context);
+  }
   visitLiteralPrimitive(ast: LiteralPrimitive, context: any): any {}
   visitMethodCall(ast: MethodCall, context: any): any {
     this.visit(ast.receiver, context);
     this.visitAll(ast.args, context);
   }
-  visitPrefixNot(ast: PrefixNot, context: any): any { this.visit(ast.expression, context); }
+  visitPrefixNot(ast: PrefixNot, context: any): any {
-  visitNonNullAssert(ast: NonNullAssert, context: any): any { this.visit(ast.expression, context); }
+    this.visit(ast.expression, context);
-  visitPropertyRead(ast: PropertyRead, context: any): any { this.visit(ast.receiver, context); }
+  }
+  visitNonNullAssert(ast: NonNullAssert, context: any): any {
+    this.visit(ast.expression, context);
+  }
+  visitPropertyRead(ast: PropertyRead, context: any): any {
+    this.visit(ast.receiver, context);
+  }
   visitPropertyWrite(ast: PropertyWrite, context: any): any {
     this.visit(ast.receiver, context);
     this.visit(ast.value, context);
@@ -441,7 +465,9 @@ export class RecursiveAstVisitor implements AstVisitor {
 }
 
 export class AstTransformer implements AstVisitor {
-  visitImplicitReceiver(ast: ImplicitReceiver, context: any): AST { return ast; }
+  visitImplicitReceiver(ast: ImplicitReceiver, context: any): AST {
+    return ast;
+  }
 
   visitInterpolation(ast: Interpolation, context: any): AST {
     return new Interpolation(ast.span, ast.sourceSpan, ast.strings, this.visitAll(ast.expressions));
@@ -476,7 +502,7 @@ export class AstTransformer implements AstVisitor {
 
   visitFunctionCall(ast: FunctionCall, context: any): AST {
     return new FunctionCall(
-        ast.span, ast.sourceSpan, ast.target !.visit(this), this.visitAll(ast.args));
+        ast.span, ast.sourceSpan, ast.target!.visit(this), this.visitAll(ast.args));
   }
 
   visitLiteralArray(ast: LiteralArray, context: any): AST {
@@ -542,7 +568,9 @@ export class AstTransformer implements AstVisitor {
 // A transformer that only creates new nodes if the transformer makes a change or
 // a change is made a child node.
 export class AstMemoryEfficientTransformer implements AstVisitor {
-  visitImplicitReceiver(ast: ImplicitReceiver, context: any): AST { return ast; }
+  visitImplicitReceiver(ast: ImplicitReceiver, context: any): AST {
+    return ast;
+  }
 
   visitInterpolation(ast: Interpolation, context: any): Interpolation {
     const expressions = this.visitAll(ast.expressions);
@@ -551,7 +579,9 @@ export class AstMemoryEfficientTransformer implements AstVisitor {
     return ast;
   }
 
-  visitLiteralPrimitive(ast: LiteralPrimitive, context: any): AST { return ast; }
+  visitLiteralPrimitive(ast: LiteralPrimitive, context: any): AST {
+    return ast;
+  }
 
   visitPropertyRead(ast: PropertyRead, context: any): AST {
     const receiver = ast.receiver.visit(this);
@@ -704,7 +734,9 @@ export class AstMemoryEfficientTransformer implements AstVisitor {
     return ast;
   }
 
-  visitQuote(ast: Quote, context: any): AST { return ast; }
+  visitQuote(ast: Quote, context: any): AST {
+    return ast;
+  }
 }
 
 // Bindings

packages/compiler/src/expression_parser/lexer.ts

@@ -42,37 +42,61 @@ export class Token {
     return this.type == TokenType.Character && this.numValue == code;
   }
 
-  isNumber(): boolean { return this.type == TokenType.Number; }
+  isNumber(): boolean {
+    return this.type == TokenType.Number;
+  }
 
-  isString(): boolean { return this.type == TokenType.String; }
+  isString(): boolean {
+    return this.type == TokenType.String;
+  }
 
   isOperator(operator: string): boolean {
     return this.type == TokenType.Operator && this.strValue == operator;
   }
 
-  isIdentifier(): boolean { return this.type == TokenType.Identifier; }
+  isIdentifier(): boolean {
+    return this.type == TokenType.Identifier;
+  }
 
-  isKeyword(): boolean { return this.type == TokenType.Keyword; }
+  isKeyword(): boolean {
+    return this.type == TokenType.Keyword;
+  }
 
-  isKeywordLet(): boolean { return this.type == TokenType.Keyword && this.strValue == 'let'; }
+  isKeywordLet(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'let';
+  }
 
-  isKeywordAs(): boolean { return this.type == TokenType.Keyword && this.strValue == 'as'; }
+  isKeywordAs(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'as';
+  }
 
-  isKeywordNull(): boolean { return this.type == TokenType.Keyword && this.strValue == 'null'; }
+  isKeywordNull(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'null';
+  }
 
   isKeywordUndefined(): boolean {
     return this.type == TokenType.Keyword && this.strValue == 'undefined';
   }
 
-  isKeywordTrue(): boolean { return this.type == TokenType.Keyword && this.strValue == 'true'; }
+  isKeywordTrue(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'true';
+  }
 
-  isKeywordFalse(): boolean { return this.type == TokenType.Keyword && this.strValue == 'false'; }
+  isKeywordFalse(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'false';
+  }
 
-  isKeywordThis(): boolean { return this.type == TokenType.Keyword && this.strValue == 'this'; }
+  isKeywordThis(): boolean {
+    return this.type == TokenType.Keyword && this.strValue == 'this';
+  }
 
-  isError(): boolean { return this.type == TokenType.Error; }
+  isError(): boolean {
+    return this.type == TokenType.Error;
+  }
 
-  toNumber(): number { return this.type == TokenType.Number ? this.numValue : -1; }
+  toNumber(): number {
+    return this.type == TokenType.Number ? this.numValue : -1;
+  }
 
   toString(): string|null {
     switch (this.type) {

packages/compiler/src/expression_parser/parser.ts

@@ -10,8 +10,8 @@ import * as chars from '../chars';
 import {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from '../ml_parser/interpolation_config';
 import {escapeRegExp} from '../util';
 
-import {AST, ASTWithSource, AbsoluteSourceSpan, AstVisitor, Binary, BindingPipe, Chain, Conditional, EmptyExpr, ExpressionBinding, FunctionCall, ImplicitReceiver, Interpolation, KeyedRead, KeyedWrite, LiteralArray, LiteralMap, LiteralMapKey, LiteralPrimitive, MethodCall, NonNullAssert, ParseSpan, ParserError, PrefixNot, PropertyRead, PropertyWrite, Quote, SafeMethodCall, SafePropertyRead, TemplateBinding, TemplateBindingIdentifier, VariableBinding} from './ast';
+import {AbsoluteSourceSpan, AST, AstVisitor, ASTWithSource, Binary, BindingPipe, Chain, Conditional, EmptyExpr, ExpressionBinding, FunctionCall, ImplicitReceiver, Interpolation, KeyedRead, KeyedWrite, LiteralArray, LiteralMap, LiteralMapKey, LiteralPrimitive, MethodCall, NonNullAssert, ParserError, ParseSpan, PrefixNot, PropertyRead, PropertyWrite, Quote, SafeMethodCall, SafePropertyRead, TemplateBinding, TemplateBindingIdentifier, VariableBinding} from './ast';
-import {EOF, Lexer, Token, TokenType, isIdentifier, isQuote} from './lexer';
+import {EOF, isIdentifier, isQuote, Lexer, Token, TokenType} from './lexer';
 
 export class SplitInterpolation {
   constructor(public strings: string[], public expressions: string[], public offsets: number[]) {}
@@ -253,7 +253,8 @@ export class Parser {
     const parts = input.split(regexp);
     if (parts.length > 1) {
       this._reportError(
-          `Got interpolation (${interpolationConfig.start}${interpolationConfig.end}) where expression was expected`,
+          `Got interpolation (${interpolationConfig.start}${
+              interpolationConfig.end}) where expression was expected`,
           input,
           `at column ${this._findInterpolationErrorColumn(parts, 1, interpolationConfig)} in`,
           location);
@@ -300,7 +301,9 @@ export class _ParseAST {
     return i < this.tokens.length ? this.tokens[i] : EOF;
   }
 
-  get next(): Token { return this.peek(0); }
+  get next(): Token {
+    return this.peek(0);
+  }
 
   get inputIndex(): number {
     return (this.index < this.tokens.length) ? this.next.index + this.offset :
@@ -310,7 +313,9 @@ export class _ParseAST {
   /**
    * Returns the absolute offset of the start of the current token.
    */
-  get currentAbsoluteOffset(): number { return this.absoluteOffset + this.inputIndex; }
+  get currentAbsoluteOffset(): number {
+    return this.absoluteOffset + this.inputIndex;
+  }
 
   span(start: number) {
     // `end` is either the
@@ -326,10 +331,12 @@ export class _ParseAST {
     if (!this.sourceSpanCache.has(serial)) {
       this.sourceSpanCache.set(serial, this.span(start).toAbsolute(this.absoluteOffset));
     }
-    return this.sourceSpanCache.get(serial) !;
+    return this.sourceSpanCache.get(serial)!;
   }
 
-  advance() { this.index++; }
+  advance() {
+    this.index++;
+  }
 
   consumeOptionalCharacter(code: number): boolean {
     if (this.next.isCharacter(code)) {
@@ -340,8 +347,12 @@ export class _ParseAST {
     }
   }
 
-  peekKeywordLet(): boolean { return this.next.isKeywordLet(); }
+  peekKeywordLet(): boolean {
-  peekKeywordAs(): boolean { return this.next.isKeywordAs(); }
+    return this.next.isKeywordLet();
+  }
+  peekKeywordAs(): boolean {
+    return this.next.isKeywordAs();
+  }
 
   expectCharacter(code: number) {
     if (this.consumeOptionalCharacter(code)) return;
@@ -428,7 +439,9 @@ export class _ParseAST {
     return result;
   }
 
-  parseExpression(): AST { return this.parseConditional(); }
+  parseExpression(): AST {
+    return this.parseConditional();
+  }
 
   parseConditional(): AST {
     const start = this.inputIndex;
@@ -984,8 +997,8 @@ export class _ParseAST {
            (this.rbracesExpected <= 0 || !n.isCharacter(chars.$RBRACE)) &&
            (this.rbracketsExpected <= 0 || !n.isCharacter(chars.$RBRACKET))) {
       if (this.next.isError()) {
-        this.errors.push(new ParserError(
+        this.errors.push(
-            this.next.toString() !, this.input, this.locationText(), this.location));
+            new ParserError(this.next.toString()!, this.input, this.locationText(), this.location));
       }
       this.advance();
       n = this.next;
@@ -1014,9 +1027,13 @@ class SimpleExpressionChecker implements AstVisitor {
 
   visitFunctionCall(ast: FunctionCall, context: any) {}
 
-  visitLiteralArray(ast: LiteralArray, context: any) { this.visitAll(ast.expressions); }
+  visitLiteralArray(ast: LiteralArray, context: any) {
+    this.visitAll(ast.expressions);
+  }
 
-  visitLiteralMap(ast: LiteralMap, context: any) { this.visitAll(ast.values); }
+  visitLiteralMap(ast: LiteralMap, context: any) {
+    this.visitAll(ast.values);
+  }
 
   visitBinary(ast: Binary, context: any) {}
 
@@ -1026,13 +1043,17 @@ class SimpleExpressionChecker implements AstVisitor {
 
   visitConditional(ast: Conditional, context: any) {}
 
-  visitPipe(ast: BindingPipe, context: any) { this.errors.push('pipes'); }
+  visitPipe(ast: BindingPipe, context: any) {
+    this.errors.push('pipes');
+  }
 
   visitKeyedRead(ast: KeyedRead, context: any) {}
 
   visitKeyedWrite(ast: KeyedWrite, context: any) {}
 
-  visitAll(asts: any[]): any[] { return asts.map(node => node.visit(this)); }
+  visitAll(asts: any[]): any[] {
+    return asts.map(node => node.visit(this));
+  }
 
   visitChain(ast: Chain, context: any) {}
 
@@ -1052,5 +1073,7 @@ class IvySimpleExpressionChecker extends SimpleExpressionChecker {
     ast.right.visit(this);
   }
 
-  visitPrefixNot(ast: PrefixNot, context: any) { ast.expression.visit(this); }
+  visitPrefixNot(ast: PrefixNot, context: any) {
+    ast.expression.visit(this);
+  }
 }

packages/compiler/src/i18n/digest.ts

@@ -48,7 +48,9 @@ export function computeDecimalDigest(message: i18n.Message): string {
  * @internal
  */
 class _SerializerVisitor implements i18n.Visitor {
-  visitText(text: i18n.Text, context: any): any { return text.value; }
+  visitText(text: i18n.Text, context: any): any {
+    return text.value;
+  }
 
   visitContainer(container: i18n.Container, context: any): any {
     return `[${container.children.map(child => child.visit(this)).join(', ')}]`;
@@ -63,7 +65,8 @@ class _SerializerVisitor implements i18n.Visitor {
   visitTagPlaceholder(ph: i18n.TagPlaceholder, context: any): any {
     return ph.isVoid ?
         `<ph tag name="${ph.startName}"/>` :
-        `<ph tag name="${ph.startName}">${ph.children.map(child => child.visit(this)).join(', ')}</ph name="${ph.closeName}">`;
+        `<ph tag name="${ph.startName}">${
+            ph.children.map(child => child.visit(this)).join(', ')}</ph name="${ph.closeName}">`;
   }
 
   visitPlaceholder(ph: i18n.Placeholder, context: any): any {

packages/compiler/src/i18n/extractor.ts

@@ -78,11 +78,11 @@ export class Extractor {
               // Template URL points to either an HTML or TS file depending on
               // whether the file is used with `templateUrl:` or `template:`,
               // respectively.
-              const templateUrl = compMeta.template !.templateUrl !;
+              const templateUrl = compMeta.template !.templateUrl!;
               const interpolationConfig =
                   InterpolationConfig.fromArray(compMeta.template !.interpolation);
               errors.push(...this.messageBundle.updateFromTemplate(
-                  html, templateUrl, interpolationConfig) !);
+                  html, templateUrl, interpolationConfig)!);
             });
           });
 

packages/compiler/src/i18n/extractor_merger.ts

@@ -9,8 +9,9 @@
 import * as html from '../ml_parser/ast';
 import {InterpolationConfig} from '../ml_parser/interpolation_config';
 import {ParseTreeResult} from '../ml_parser/parser';
+
 import * as i18n from './i18n_ast';
-import {I18nMessageFactory, createI18nMessageFactory} from './i18n_parser';
+import {createI18nMessageFactory, I18nMessageFactory} from './i18n_parser';
 import {I18nError} from './parse_util';
 import {TranslationBundle} from './translation_bundle';
 
@@ -56,44 +57,44 @@ enum _VisitorMode {
  */
 class _Visitor implements html.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _depth !: number;
+  private _depth!: number;
 
   // <el i18n>...</el>
   // TODO(issue/24571): remove '!'.
-  private _inI18nNode !: boolean;
+  private _inI18nNode!: boolean;
   // TODO(issue/24571): remove '!'.
-  private _inImplicitNode !: boolean;
+  private _inImplicitNode!: boolean;
 
   // <!--i18n-->...<!--/i18n-->
   // TODO(issue/24571): remove '!'.
-  private _inI18nBlock !: boolean;
+  private _inI18nBlock!: boolean;
   // TODO(issue/24571): remove '!'.
-  private _blockMeaningAndDesc !: string;
+  private _blockMeaningAndDesc!: string;
   // TODO(issue/24571): remove '!'.
-  private _blockChildren !: html.Node[];
+  private _blockChildren!: html.Node[];
   // TODO(issue/24571): remove '!'.
-  private _blockStartDepth !: number;
+  private _blockStartDepth!: number;
 
   // {<icu message>}
   // TODO(issue/24571): remove '!'.
-  private _inIcu !: boolean;
+  private _inIcu!: boolean;
 
   // set to void 0 when not in a section
   private _msgCountAtSectionStart: number|undefined;
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
   // TODO(issue/24571): remove '!'.
-  private _mode !: _VisitorMode;
+  private _mode!: _VisitorMode;
 
   // _VisitorMode.Extract only
   // TODO(issue/24571): remove '!'.
-  private _messages !: i18n.Message[];
+  private _messages!: i18n.Message[];
 
   // _VisitorMode.Merge only
   // TODO(issue/24571): remove '!'.
-  private _translations !: TranslationBundle;
+  private _translations!: TranslationBundle;
   // TODO(issue/24571): remove '!'.
-  private _createI18nMessage !: I18nMessageFactory;
+  private _createI18nMessage!: I18nMessageFactory;
 
 
   constructor(private _implicitTags: string[], private _implicitAttrs: {[k: string]: string[]}) {}
@@ -123,7 +124,7 @@ class _Visitor implements html.Visitor {
     this._translations = translations;
 
     // Construct a single fake root element
-    const wrapper = new html.Element('wrapper', [], nodes, undefined !, undefined, undefined);
+    const wrapper = new html.Element('wrapper', [], nodes, undefined!, undefined, undefined);
 
     const translatedNode = wrapper.visit(this, null);
 
@@ -193,14 +194,14 @@ class _Visitor implements html.Visitor {
             i18nCommentsWarned = true;
             const details = comment.sourceSpan.details ? `, ${comment.sourceSpan.details}` : '';
             // TODO(ocombe): use a log service once there is a public one available
-            console.warn(
+            console.warn(`I18n comments are deprecated, use an <ng-container> element instead (${
-                `I18n comments are deprecated, use an <ng-container> element instead (${comment.sourceSpan.start}${details})`);
+                comment.sourceSpan.start}${details})`);
           }
           this._inI18nBlock = true;
           this._blockStartDepth = this._depth;
           this._blockChildren = [];
           this._blockMeaningAndDesc =
-              comment.value !.replace(_I18N_COMMENT_PREFIX_REGEXP, '').trim();
+              comment.value!.replace(_I18N_COMMENT_PREFIX_REGEXP, '').trim();
           this._openTranslatableSection(comment);
         }
       } else {
@@ -208,7 +209,7 @@ class _Visitor implements html.Visitor {
           if (this._depth == this._blockStartDepth) {
             this._closeTranslatableSection(comment, this._blockChildren);
             this._inI18nBlock = false;
-            const message = this._addMessage(this._blockChildren, this._blockMeaningAndDesc) !;
+            const message = this._addMessage(this._blockChildren, this._blockMeaningAndDesc)!;
             // merge attributes in sections
             const nodes = this._translateMessage(comment, message);
             return html.visitAll(this, nodes);
@@ -234,7 +235,7 @@ class _Visitor implements html.Visitor {
     const wasInI18nNode = this._inI18nNode;
     const wasInImplicitNode = this._inImplicitNode;
     let childNodes: html.Node[] = [];
-    let translatedChildNodes: html.Node[] = undefined !;
+    let translatedChildNodes: html.Node[] = undefined!;
 
     // Extract:
     // - top level nodes with the (implicit) "i18n" attribute if not already in a section
@@ -249,7 +250,7 @@ class _Visitor implements html.Visitor {
     if (!this._isInTranslatableSection && !this._inIcu) {
       if (i18nAttr || isTopLevelImplicit) {
         this._inI18nNode = true;
-        const message = this._addMessage(el.children, i18nMeta) !;
+        const message = this._addMessage(el.children, i18nMeta)!;
         translatedChildNodes = this._translateMessage(el, message);
       }
 
@@ -400,12 +401,14 @@ class _Visitor implements html.Visitor {
           } else {
             this._reportError(
                 el,
-                `Unexpected translation for attribute "${attr.name}" (id="${id || this._translations.digest(message)}")`);
+                `Unexpected translation for attribute "${attr.name}" (id="${
+                    id || this._translations.digest(message)}")`);
           }
         } else {
           this._reportError(
               el,
-              `Translation unavailable for attribute "${attr.name}" (id="${id || this._translations.digest(message)}")`);
+              `Translation unavailable for attribute "${attr.name}" (id="${
+                  id || this._translations.digest(message)}")`);
         }
       } else {
         translatedAttributes.push(attr);
@@ -476,7 +479,7 @@ class _Visitor implements html.Visitor {
         0);
 
     if (significantChildren == 1) {
-      for (let i = this._messages.length - 1; i >= startIndex !; i--) {
+      for (let i = this._messages.length - 1; i >= startIndex!; i--) {
         const ast = this._messages[i].nodes;
         if (!(ast.length == 1 && ast[0] instanceof i18n.Text)) {
           this._messages.splice(i, 1);
@@ -489,7 +492,7 @@ class _Visitor implements html.Visitor {
   }
 
   private _reportError(node: html.Node, msg: string): void {
-    this._errors.push(new I18nError(node.sourceSpan !, msg));
+    this._errors.push(new I18nError(node.sourceSpan!, msg));
   }
 }
 

packages/compiler/src/i18n/i18n_ast.ts

@@ -57,24 +57,30 @@ export interface Node {
 export class Text implements Node {
   constructor(public value: string, public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitText(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitText(this, context);
+  }
 }
 
 // TODO(vicb): do we really need this node (vs an array) ?
 export class Container implements Node {
   constructor(public children: Node[], public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitContainer(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitContainer(this, context);
+  }
 }
 
 export class Icu implements Node {
   // TODO(issue/24571): remove '!'.
-  public expressionPlaceholder !: string;
+  public expressionPlaceholder!: string;
   constructor(
       public expression: string, public type: string, public cases: {[k: string]: Node},
       public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitIcu(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitIcu(this, context);
+  }
 }
 
 export class TagPlaceholder implements Node {
@@ -83,13 +89,17 @@ export class TagPlaceholder implements Node {
       public closeName: string, public children: Node[], public isVoid: boolean,
       public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitTagPlaceholder(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitTagPlaceholder(this, context);
+  }
 }
 
 export class Placeholder implements Node {
   constructor(public value: string, public name: string, public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitPlaceholder(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitPlaceholder(this, context);
+  }
 }
 
 export class IcuPlaceholder implements Node {
@@ -97,7 +107,9 @@ export class IcuPlaceholder implements Node {
   previousMessage?: Message;
   constructor(public value: Icu, public name: string, public sourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context?: any): any { return visitor.visitIcuPlaceholder(this, context); }
+  visit(visitor: Visitor, context?: any): any {
+    return visitor.visitIcuPlaceholder(this, context);
+  }
 }
 
 /**
@@ -106,7 +118,7 @@ export class IcuPlaceholder implements Node {
  * This information is either a `Message`, which indicates it is the root of an i18n message, or a
  * `Node`, which indicates is it part of a containing `Message`.
  */
-export type I18nMeta = Message | Node;
+export type I18nMeta = Message|Node;
 
 export interface Visitor {
   visitText(text: Text, context?: any): any;
@@ -119,7 +131,9 @@ export interface Visitor {
 
 // Clone the AST
 export class CloneVisitor implements Visitor {
-  visitText(text: Text, context?: any): Text { return new Text(text.value, text.sourceSpan); }
+  visitText(text: Text, context?: any): Text {
+    return new Text(text.value, text.sourceSpan);
+  }
 
   visitContainer(container: Container, context?: any): Container {
     const children = container.children.map(n => n.visit(this, context));
@@ -158,7 +172,9 @@ export class RecurseVisitor implements Visitor {
   }
 
   visitIcu(icu: Icu, context?: any): any {
-    Object.keys(icu.cases).forEach(k => { icu.cases[k].visit(this); });
+    Object.keys(icu.cases).forEach(k => {
+      icu.cases[k].visit(this);
+    });
   }
 
   visitTagPlaceholder(ph: TagPlaceholder, context?: any): any {

packages/compiler/src/i18n/i18n_parser.ts

@@ -83,7 +83,7 @@ class _I18nVisitor implements html.Visitor {
     const isVoid: boolean = getHtmlTagDefinition(el.name).isVoid;
     const startPhName =
         context.placeholderRegistry.getStartTagPlaceholderName(el.name, attrs, isVoid);
-    context.placeholderToContent[startPhName] = el.sourceSpan !.toString();
+    context.placeholderToContent[startPhName] = el.sourceSpan!.toString();
 
     let closePhName = '';
 
@@ -93,7 +93,7 @@ class _I18nVisitor implements html.Visitor {
     }
 
     const node = new i18n.TagPlaceholder(
-        el.name, attrs, startPhName, closePhName, children, isVoid, el.sourceSpan !);
+        el.name, attrs, startPhName, closePhName, children, isVoid, el.sourceSpan!);
     return context.visitNodeFn(el, node);
   }
 
@@ -103,7 +103,7 @@ class _I18nVisitor implements html.Visitor {
   }
 
   visitText(text: html.Text, context: I18nMessageVisitorContext): i18n.Node {
-    const node = this._visitTextWithInterpolation(text.value, text.sourceSpan !, context);
+    const node = this._visitTextWithInterpolation(text.value, text.sourceSpan!, context);
     return context.visitNodeFn(text, node);
   }
 

packages/compiler/src/i18n/message_bundle.ts

@@ -47,7 +47,9 @@ export class MessageBundle {
 
   // Return the message in the internal format
   // The public (serialized) format might be different, see the `write` method.
-  getMessages(): i18n.Message[] { return this._messages; }
+  getMessages(): i18n.Message[] {
+    return this._messages;
+  }
 
   write(serializer: Serializer, filterSources?: (path: string) => string): string {
     const messages: {[id: string]: i18n.Message} = {};
@@ -88,18 +90,18 @@ class MapPlaceholderNames extends i18n.CloneVisitor {
   }
 
   visitTagPlaceholder(ph: i18n.TagPlaceholder, mapper: PlaceholderMapper): i18n.TagPlaceholder {
-    const startName = mapper.toPublicName(ph.startName) !;
+    const startName = mapper.toPublicName(ph.startName)!;
-    const closeName = ph.closeName ? mapper.toPublicName(ph.closeName) ! : ph.closeName;
+    const closeName = ph.closeName ? mapper.toPublicName(ph.closeName)! : ph.closeName;
     const children = ph.children.map(n => n.visit(this, mapper));
     return new i18n.TagPlaceholder(
         ph.tag, ph.attrs, startName, closeName, children, ph.isVoid, ph.sourceSpan);
   }
 
   visitPlaceholder(ph: i18n.Placeholder, mapper: PlaceholderMapper): i18n.Placeholder {
-    return new i18n.Placeholder(ph.value, mapper.toPublicName(ph.name) !, ph.sourceSpan);
+    return new i18n.Placeholder(ph.value, mapper.toPublicName(ph.name)!, ph.sourceSpan);
   }
 
   visitIcuPlaceholder(ph: i18n.IcuPlaceholder, mapper: PlaceholderMapper): i18n.IcuPlaceholder {
-    return new i18n.IcuPlaceholder(ph.value, mapper.toPublicName(ph.name) !, ph.sourceSpan);
+    return new i18n.IcuPlaceholder(ph.value, mapper.toPublicName(ph.name)!, ph.sourceSpan);
   }
 }

packages/compiler/src/i18n/parse_util.ts

@@ -12,5 +12,7 @@ import {ParseError, ParseSourceSpan} from '../parse_util';
  * An i18n error.
  */
 export class I18nError extends ParseError {
-  constructor(span: ParseSourceSpan, msg: string) { super(span, msg); }
+  constructor(span: ParseSourceSpan, msg: string) {
+    super(span, msg);
+  }
 }

packages/compiler/src/i18n/serializers/placeholder.ts

@@ -106,7 +106,9 @@ export class PlaceholderRegistry {
     return start + strAttrs + end;
   }
 
-  private _hashClosingTag(tag: string): string { return this._hashTag(`/${tag}`, {}, false); }
+  private _hashClosingTag(tag: string): string {
+    return this._hashTag(`/${tag}`, {}, false);
+  }
 
   private _generateUniqueName(base: string): string {
     const seen = this._placeHolderNameCounts.hasOwnProperty(base);

packages/compiler/src/i18n/serializers/serializer.ts

@@ -15,13 +15,15 @@ export abstract class Serializer {
   abstract write(messages: i18n.Message[], locale: string|null): string;
 
   abstract load(content: string, url: string):
-      {locale: string | null, i18nNodesByMsgId: {[msgId: string]: i18n.Node[]}};
+      {locale: string|null, i18nNodesByMsgId: {[msgId: string]: i18n.Node[]}};
 
   abstract digest(message: i18n.Message): string;
 
   // Creates a name mapper, see `PlaceholderMapper`
   // Returning `null` means that no name mapping is used.
-  createNameMapper(message: i18n.Message): PlaceholderMapper|null { return null; }
+  createNameMapper(message: i18n.Message): PlaceholderMapper|null {
+    return null;
+  }
 }
 
 /**
@@ -61,7 +63,9 @@ export class SimplePlaceholderMapper extends i18n.RecurseVisitor implements Plac
                                                               null;
   }
 
-  visitText(text: i18n.Text, context?: any): any { return null; }
+  visitText(text: i18n.Text, context?: any): any {
+    return null;
+  }
 
   visitTagPlaceholder(ph: i18n.TagPlaceholder, context?: any): any {
     this.visitPlaceholderName(ph.startName);
@@ -69,7 +73,9 @@ export class SimplePlaceholderMapper extends i18n.RecurseVisitor implements Plac
     this.visitPlaceholderName(ph.closeName);
   }
 
-  visitPlaceholder(ph: i18n.Placeholder, context?: any): any { this.visitPlaceholderName(ph.name); }
+  visitPlaceholder(ph: i18n.Placeholder, context?: any): any {
+    this.visitPlaceholderName(ph.name);
+  }
 
   visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): any {
     this.visitPlaceholderName(ph.name);

packages/compiler/src/i18n/serializers/xliff.ts

@@ -46,9 +46,9 @@ export class Xliff extends Serializer {
             new xml.CR(10),
             new xml.Tag(
                 _CONTEXT_TAG, {'context-type': 'sourcefile'}, [new xml.Text(source.filePath)]),
-            new xml.CR(10), new xml.Tag(
+            new xml.CR(10),
-                                _CONTEXT_TAG, {'context-type': 'linenumber'},
+            new xml.Tag(_CONTEXT_TAG, {'context-type': 'linenumber'}, [new xml.Text(
-                                [new xml.Text(`${source.startLine}`)]),
+                                                                          `${source.startLine}`)]),
             new xml.CR(8));
         contextTags.push(new xml.CR(8), contextGroupTag);
       });
@@ -112,14 +112,18 @@ export class Xliff extends Serializer {
       throw new Error(`xliff parse errors:\n${errors.join('\n')}`);
     }
 
-    return {locale: locale !, i18nNodesByMsgId};
+    return {locale: locale!, i18nNodesByMsgId};
   }
 
-  digest(message: i18n.Message): string { return digest(message); }
+  digest(message: i18n.Message): string {
+    return digest(message);
+  }
 }
 
 class _WriteVisitor implements i18n.Visitor {
-  visitText(text: i18n.Text, context?: any): xml.Node[] { return [new xml.Text(text.value)]; }
+  visitText(text: i18n.Text, context?: any): xml.Node[] {
+    return [new xml.Text(text.value)];
+  }
 
   visitContainer(container: i18n.Container, context?: any): xml.Node[] {
     const nodes: xml.Node[] = [];
@@ -161,8 +165,8 @@ class _WriteVisitor implements i18n.Visitor {
   }
 
   visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): xml.Node[] {
-    const equivText =
+    const equivText = `{${ph.value.expression}, ${ph.value.type}, ${
-        `{${ph.value.expression}, ${ph.value.type}, ${Object.keys(ph.value.cases).map((value: string) => value + ' {...}').join(' ')}}`;
+        Object.keys(ph.value.cases).map((value: string) => value + ' {...}').join(' ')}}`;
     return [new xml.Tag(_PLACEHOLDER_TAG, {id: ph.name, 'equiv-text': equivText})];
   }
 
@@ -175,11 +179,11 @@ class _WriteVisitor implements i18n.Visitor {
 // Extract messages as xml nodes from the xliff file
 class XliffParser implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _unitMlString !: string | null;
+  private _unitMlString!: string|null;
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
   // TODO(issue/24571): remove '!'.
-  private _msgIdToHtml !: {[msgId: string]: string};
+  private _msgIdToHtml!: {[msgId: string]: string};
   private _locale: string|null = null;
 
   parse(xliff: string, url: string) {
@@ -201,7 +205,7 @@ class XliffParser implements ml.Visitor {
   visitElement(element: ml.Element, context: any): any {
     switch (element.name) {
       case _UNIT_TAG:
-        this._unitMlString = null !;
+        this._unitMlString = null!;
         const idAttr = element.attrs.find((attr) => attr.name === 'id');
         if (!idAttr) {
           this._addError(element, `<${_UNIT_TAG}> misses the "id" attribute`);
@@ -227,9 +231,9 @@ class XliffParser implements ml.Visitor {
         break;
 
       case _TARGET_TAG:
-        const innerTextStart = element.startSourceSpan !.end.offset;
+        const innerTextStart = element.startSourceSpan!.end.offset;
-        const innerTextEnd = element.endSourceSpan !.start.offset;
+        const innerTextEnd = element.endSourceSpan!.start.offset;
-        const content = element.startSourceSpan !.start.file.content;
+        const content = element.startSourceSpan!.start.file.content;
         const innerText = content.slice(innerTextStart, innerTextEnd);
         this._unitMlString = innerText;
         break;
@@ -260,14 +264,14 @@ class XliffParser implements ml.Visitor {
   visitExpansionCase(expansionCase: ml.ExpansionCase, context: any): any {}
 
   private _addError(node: ml.Node, message: string): void {
-    this._errors.push(new I18nError(node.sourceSpan !, message));
+    this._errors.push(new I18nError(node.sourceSpan!, message));
   }
 }
 
 // Convert ml nodes (xliff syntax) to i18n nodes
 class XmlToI18n implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
 
   convert(message: string, url: string) {
     const xmlIcu = new XmlParser().parse(message, url, {tokenizeExpansionForms: true});
@@ -283,13 +287,15 @@ class XmlToI18n implements ml.Visitor {
     };
   }
 
-  visitText(text: ml.Text, context: any) { return new i18n.Text(text.value, text.sourceSpan !); }
+  visitText(text: ml.Text, context: any) {
+    return new i18n.Text(text.value, text.sourceSpan!);
+  }
 
   visitElement(el: ml.Element, context: any): i18n.Placeholder|ml.Node[]|null {
     if (el.name === _PLACEHOLDER_TAG) {
       const nameAttr = el.attrs.find((attr) => attr.name === 'id');
       if (nameAttr) {
-        return new i18n.Placeholder('', nameAttr.value, el.sourceSpan !);
+        return new i18n.Placeholder('', nameAttr.value, el.sourceSpan!);
       }
 
       this._addError(el, `<${_PLACEHOLDER_TAG}> misses the "id" attribute`);
@@ -326,7 +332,7 @@ class XmlToI18n implements ml.Visitor {
   visitAttribute(attribute: ml.Attribute, context: any) {}
 
   private _addError(node: ml.Node, message: string): void {
-    this._errors.push(new I18nError(node.sourceSpan !, message));
+    this._errors.push(new I18nError(node.sourceSpan!, message));
   }
 }
 

packages/compiler/src/i18n/serializers/xliff2.ts

@@ -54,8 +54,8 @@ export class Xliff2 extends Serializer {
 
       message.sources.forEach((source: i18n.MessageSpan) => {
         notes.children.push(new xml.CR(8), new xml.Tag('note', {category: 'location'}, [
-          new xml.Text(
+          new xml.Text(`${source.filePath}:${source.startLine}${
-              `${source.filePath}:${source.startLine}${source.endLine !== source.startLine ? ',' + source.endLine : ''}`)
+              source.endLine !== source.startLine ? ',' + source.endLine : ''}`)
         ]));
       });
 
@@ -105,17 +105,21 @@ export class Xliff2 extends Serializer {
       throw new Error(`xliff2 parse errors:\n${errors.join('\n')}`);
     }
 
-    return {locale: locale !, i18nNodesByMsgId};
+    return {locale: locale!, i18nNodesByMsgId};
   }
 
-  digest(message: i18n.Message): string { return decimalDigest(message); }
+  digest(message: i18n.Message): string {
+    return decimalDigest(message);
+  }
 }
 
 class _WriteVisitor implements i18n.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _nextPlaceholderId !: number;
+  private _nextPlaceholderId!: number;
 
-  visitText(text: i18n.Text, context?: any): xml.Node[] { return [new xml.Text(text.value)]; }
+  visitText(text: i18n.Text, context?: any): xml.Node[] {
+    return [new xml.Text(text.value)];
+  }
 
   visitContainer(container: i18n.Container, context?: any): xml.Node[] {
     const nodes: xml.Node[] = [];
@@ -192,11 +196,11 @@ class _WriteVisitor implements i18n.Visitor {
 // Extract messages as xml nodes from the xliff file
 class Xliff2Parser implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _unitMlString !: string | null;
+  private _unitMlString!: string|null;
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
   // TODO(issue/24571): remove '!'.
-  private _msgIdToHtml !: {[msgId: string]: string};
+  private _msgIdToHtml!: {[msgId: string]: string};
   private _locale: string|null = null;
 
   parse(xliff: string, url: string) {
@@ -242,9 +246,9 @@ class Xliff2Parser implements ml.Visitor {
         break;
 
       case _TARGET_TAG:
-        const innerTextStart = element.startSourceSpan !.end.offset;
+        const innerTextStart = element.startSourceSpan!.end.offset;
-        const innerTextEnd = element.endSourceSpan !.start.offset;
+        const innerTextEnd = element.endSourceSpan!.start.offset;
-        const content = element.startSourceSpan !.start.file.content;
+        const content = element.startSourceSpan!.start.file.content;
         const innerText = content.slice(innerTextStart, innerTextEnd);
         this._unitMlString = innerText;
         break;
@@ -290,7 +294,7 @@ class Xliff2Parser implements ml.Visitor {
 // Convert ml nodes (xliff syntax) to i18n nodes
 class XmlToI18n implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
 
   convert(message: string, url: string) {
     const xmlIcu = new XmlParser().parse(message, url, {tokenizeExpansionForms: true});
@@ -306,7 +310,9 @@ class XmlToI18n implements ml.Visitor {
     };
   }
 
-  visitText(text: ml.Text, context: any) { return new i18n.Text(text.value, text.sourceSpan); }
+  visitText(text: ml.Text, context: any) {
+    return new i18n.Text(text.value, text.sourceSpan);
+  }
 
   visitElement(el: ml.Element, context: any): i18n.Node[]|null {
     switch (el.name) {

packages/compiler/src/i18n/serializers/xmb.ts

@@ -57,10 +57,10 @@ export class Xmb extends Serializer {
 
       let sourceTags: xml.Tag[] = [];
       message.sources.forEach((source: i18n.MessageSpan) => {
-        sourceTags.push(new xml.Tag(_SOURCE_TAG, {}, [
+        sourceTags.push(new xml.Tag(
-          new xml.Text(
+            _SOURCE_TAG, {},
-              `${source.filePath}:${source.startLine}${source.endLine !== source.startLine ? ',' + source.endLine : ''}`)
+            [new xml.Text(`${source.filePath}:${source.startLine}${
-        ]));
+                source.endLine !== source.startLine ? ',' + source.endLine : ''}`)]));
       });
 
       rootNode.children.push(
@@ -85,7 +85,9 @@ export class Xmb extends Serializer {
     throw new Error('Unsupported');
   }
 
-  digest(message: i18n.Message): string { return digest(message); }
+  digest(message: i18n.Message): string {
+    return digest(message);
+  }
 
 
   createNameMapper(message: i18n.Message): PlaceholderMapper {
@@ -94,7 +96,9 @@ export class Xmb extends Serializer {
 }
 
 class _Visitor implements i18n.Visitor {
-  visitText(text: i18n.Text, context?: any): xml.Node[] { return [new xml.Text(text.value)]; }
+  visitText(text: i18n.Text, context?: any): xml.Node[] {
+    return [new xml.Text(text.value)];
+  }
 
   visitContainer(container: i18n.Container, context: any): xml.Node[] {
     const nodes: xml.Node[] = [];

packages/compiler/src/i18n/serializers/xml_helper.ts

@@ -25,7 +25,9 @@ class _Visitor implements IVisitor {
     return `<${tag.name}${strAttrs}>${strChildren.join('')}</${tag.name}>`;
   }
 
-  visitText(text: Text): string { return text.value; }
+  visitText(text: Text): string {
+    return text.value;
+  }
 
   visitDeclaration(decl: Declaration): string {
     return `<?xml${this._serializeAttributes(decl.attrs)} ?>`;
@@ -47,7 +49,9 @@ export function serialize(nodes: Node[]): string {
   return nodes.map((node: Node): string => node.visit(_visitor)).join('');
 }
 
-export interface Node { visit(visitor: IVisitor): any; }
+export interface Node {
+  visit(visitor: IVisitor): any;
+}
 
 export class Declaration implements Node {
   public attrs: {[k: string]: string} = {};
@@ -58,13 +62,17 @@ export class Declaration implements Node {
     });
   }
 
-  visit(visitor: IVisitor): any { return visitor.visitDeclaration(this); }
+  visit(visitor: IVisitor): any {
+    return visitor.visitDeclaration(this);
+  }
 }
 
 export class Doctype implements Node {
   constructor(public rootTag: string, public dtd: string) {}
 
-  visit(visitor: IVisitor): any { return visitor.visitDoctype(this); }
+  visit(visitor: IVisitor): any {
+    return visitor.visitDoctype(this);
+  }
 }
 
 export class Tag implements Node {
@@ -78,18 +86,26 @@ export class Tag implements Node {
     });
   }
 
-  visit(visitor: IVisitor): any { return visitor.visitTag(this); }
+  visit(visitor: IVisitor): any {
+    return visitor.visitTag(this);
+  }
 }
 
 export class Text implements Node {
   value: string;
-  constructor(unescapedValue: string) { this.value = escapeXml(unescapedValue); }
+  constructor(unescapedValue: string) {
+    this.value = escapeXml(unescapedValue);
+  }
 
-  visit(visitor: IVisitor): any { return visitor.visitText(this); }
+  visit(visitor: IVisitor): any {
+    return visitor.visitText(this);
+  }
 }
 
 export class CR extends Text {
-  constructor(ws: number = 0) { super(`\n${new Array(ws + 1).join(' ')}`); }
+  constructor(ws: number = 0) {
+    super(`\n${new Array(ws + 1).join(' ')}`);
+  }
 }
 
 const _ESCAPED_CHARS: [RegExp, string][] = [

packages/compiler/src/i18n/serializers/xtb.ts

@@ -19,7 +19,9 @@ const _TRANSLATION_TAG = 'translation';
 const _PLACEHOLDER_TAG = 'ph';
 
 export class Xtb extends Serializer {
-  write(messages: i18n.Message[], locale: string|null): string { throw new Error('Unsupported'); }
+  write(messages: i18n.Message[], locale: string|null): string {
+    throw new Error('Unsupported');
+  }
 
   load(content: string, url: string):
       {locale: string, i18nNodesByMsgId: {[msgId: string]: i18n.Node[]}} {
@@ -49,10 +51,12 @@ export class Xtb extends Serializer {
       throw new Error(`xtb parse errors:\n${errors.join('\n')}`);
     }
 
-    return {locale: locale !, i18nNodesByMsgId};
+    return {locale: locale!, i18nNodesByMsgId};
   }
 
-  digest(message: i18n.Message): string { return digest(message); }
+  digest(message: i18n.Message): string {
+    return digest(message);
+  }
 
   createNameMapper(message: i18n.Message): PlaceholderMapper {
     return new SimplePlaceholderMapper(message, toPublicName);
@@ -68,18 +72,20 @@ function createLazyProperty(messages: any, id: string, valueFn: () => any) {
       Object.defineProperty(messages, id, {enumerable: true, value});
       return value;
     },
-    set: _ => { throw new Error('Could not overwrite an XTB translation'); },
+    set: _ => {
+      throw new Error('Could not overwrite an XTB translation');
+    },
   });
 }
 
 // Extract messages as xml nodes from the xtb file
 class XtbParser implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _bundleDepth !: number;
+  private _bundleDepth!: number;
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
   // TODO(issue/24571): remove '!'.
-  private _msgIdToHtml !: {[msgId: string]: string};
+  private _msgIdToHtml!: {[msgId: string]: string};
   private _locale: string|null = null;
 
   parse(xtb: string, url: string) {
@@ -124,10 +130,10 @@ class XtbParser implements ml.Visitor {
           if (this._msgIdToHtml.hasOwnProperty(id)) {
             this._addError(element, `Duplicated translations for msg ${id}`);
           } else {
-            const innerTextStart = element.startSourceSpan !.end.offset;
+            const innerTextStart = element.startSourceSpan!.end.offset;
-            const innerTextEnd = element.endSourceSpan !.start.offset;
+            const innerTextEnd = element.endSourceSpan!.start.offset;
-            const content = element.startSourceSpan !.start.file.content;
+            const content = element.startSourceSpan!.start.file.content;
-            const innerText = content.slice(innerTextStart !, innerTextEnd !);
+            const innerText = content.slice(innerTextStart!, innerTextEnd!);
             this._msgIdToHtml[id] = innerText;
           }
         }
@@ -149,14 +155,14 @@ class XtbParser implements ml.Visitor {
   visitExpansionCase(expansionCase: ml.ExpansionCase, context: any): any {}
 
   private _addError(node: ml.Node, message: string): void {
-    this._errors.push(new I18nError(node.sourceSpan !, message));
+    this._errors.push(new I18nError(node.sourceSpan!, message));
   }
 }
 
 // Convert ml nodes (xtb syntax) to i18n nodes
 class XmlToI18n implements ml.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _errors !: I18nError[];
+  private _errors!: I18nError[];
 
   convert(message: string, url: string) {
     const xmlIcu = new XmlParser().parse(message, url, {tokenizeExpansionForms: true});
@@ -172,7 +178,9 @@ class XmlToI18n implements ml.Visitor {
     };
   }
 
-  visitText(text: ml.Text, context: any) { return new i18n.Text(text.value, text.sourceSpan !); }
+  visitText(text: ml.Text, context: any) {
+    return new i18n.Text(text.value, text.sourceSpan!);
+  }
 
   visitExpansion(icu: ml.Expansion, context: any) {
     const caseMap: {[value: string]: i18n.Node} = {};
@@ -195,7 +203,7 @@ class XmlToI18n implements ml.Visitor {
     if (el.name === _PLACEHOLDER_TAG) {
       const nameAttr = el.attrs.find((attr) => attr.name === 'name');
       if (nameAttr) {
-        return new i18n.Placeholder('', nameAttr.value, el.sourceSpan !);
+        return new i18n.Placeholder('', nameAttr.value, el.sourceSpan!);
       }
 
       this._addError(el, `<${_PLACEHOLDER_TAG}> misses the "name" attribute`);
@@ -210,6 +218,6 @@ class XmlToI18n implements ml.Visitor {
   visitAttribute(attribute: ml.Attribute, context: any) {}
 
   private _addError(node: ml.Node, message: string): void {
-    this._errors.push(new I18nError(node.sourceSpan !, message));
+    this._errors.push(new I18nError(node.sourceSpan!, message));
   }
 }

packages/compiler/src/i18n/translation_bundle.ts

@@ -30,7 +30,7 @@ export class TranslationBundle {
       missingTranslationStrategy: MissingTranslationStrategy = MissingTranslationStrategy.Warning,
       console?: Console) {
     this._i18nToHtml = new I18nToHtmlVisitor(
-        _i18nNodesByMsgId, locale, digest, mapperFactory !, missingTranslationStrategy, console);
+        _i18nNodesByMsgId, locale, digest, mapperFactory!, missingTranslationStrategy, console);
   }
 
   // Creates a `TranslationBundle` by parsing the given `content` with the `serializer`.
@@ -40,7 +40,7 @@ export class TranslationBundle {
       console?: Console): TranslationBundle {
     const {locale, i18nNodesByMsgId} = serializer.load(content, url);
     const digestFn = (m: i18n.Message) => serializer.digest(m);
-    const mapperFactory = (m: i18n.Message) => serializer.createNameMapper(m) !;
+    const mapperFactory = (m: i18n.Message) => serializer.createNameMapper(m)!;
     return new TranslationBundle(
         i18nNodesByMsgId, locale, digestFn, mapperFactory, missingTranslationStrategy, console);
   }
@@ -56,16 +56,18 @@ export class TranslationBundle {
     return html.nodes;
   }
 
-  has(srcMsg: i18n.Message): boolean { return this.digest(srcMsg) in this._i18nNodesByMsgId; }
+  has(srcMsg: i18n.Message): boolean {
+    return this.digest(srcMsg) in this._i18nNodesByMsgId;
+  }
 }
 
 class I18nToHtmlVisitor implements i18n.Visitor {
   // TODO(issue/24571): remove '!'.
-  private _srcMsg !: i18n.Message;
+  private _srcMsg!: i18n.Message;
   private _contextStack: {msg: i18n.Message, mapper: (name: string) => string}[] = [];
   private _errors: I18nError[] = [];
   // TODO(issue/24571): remove '!'.
-  private _mapper !: (name: string) => string;
+  private _mapper!: (name: string) => string;
 
   constructor(
       private _i18nNodesByMsgId: {[msgId: string]: i18n.Node[]} = {}, private _locale: string|null,
@@ -166,7 +168,7 @@ class I18nToHtmlVisitor implements i18n.Visitor {
       // When there is a translation use its nodes as the source
       // And create a mapper to convert serialized placeholder names to internal names
       nodes = this._i18nNodesByMsgId[id];
-      this._mapper = (name: string) => mapper ? mapper.toInternalName(name) ! : name;
+      this._mapper = (name: string) => mapper ? mapper.toInternalName(name)! : name;
     } else {
       // When no translation has been found
       // - report an error / a warning / nothing,
@@ -185,7 +187,7 @@ class I18nToHtmlVisitor implements i18n.Visitor {
       this._mapper = (name: string) => name;
     }
     const text = nodes.map(node => node.visit(this)).join('');
-    const context = this._contextStack.pop() !;
+    const context = this._contextStack.pop()!;
     this._srcMsg = context.msg;
     this._mapper = context.mapper;
     return text;

packages/compiler/src/injectable_compiler.ts

@@ -121,7 +121,7 @@ export class InjectableCompiler {
 
   compile(injectable: CompileInjectableMetadata, ctx: OutputContext): void {
     if (this.alwaysGenerateDef || injectable.providedIn !== undefined) {
-      const className = identifierName(injectable.type) !;
+      const className = identifierName(injectable.type)!;
       const clazz = new o.ClassStmt(
           className, null,
           [

packages/compiler/src/injectable_compiler_2.ts

@@ -8,8 +8,8 @@
 
 import {Identifiers} from './identifiers';
 import * as o from './output/output_ast';
-import {R3DependencyMetadata, R3FactoryDelegateType, R3FactoryMetadata, R3FactoryTarget, compileFactoryFunction} from './render3/r3_factory';
+import {compileFactoryFunction, R3DependencyMetadata, R3FactoryDelegateType, R3FactoryMetadata, R3FactoryTarget} from './render3/r3_factory';
-import {R3Reference, mapToMapExpression, typeWithParameters} from './render3/util';
+import {mapToMapExpression, R3Reference, typeWithParameters} from './render3/util';
 
 export interface InjectableDef {
   expression: o.Expression;

packages/compiler/src/jit/compiler.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {CompileDirectiveMetadata, CompileIdentifierMetadata, CompileNgModuleMetadata, CompilePipeSummary, CompileProviderMetadata, CompileStylesheetMetadata, CompileTypeSummary, ProviderMeta, ProxyClass, identifierName, ngModuleJitUrl, sharedStylesheetJitUrl, templateJitUrl, templateSourceUrl} from '../compile_metadata';
+import {CompileDirectiveMetadata, CompileIdentifierMetadata, CompileNgModuleMetadata, CompilePipeSummary, CompileProviderMetadata, CompileStylesheetMetadata, CompileTypeSummary, identifierName, ngModuleJitUrl, ProviderMeta, ProxyClass, sharedStylesheetJitUrl, templateJitUrl, templateSourceUrl} from '../compile_metadata';
 import {CompileReflector} from '../compile_reflector';
 import {CompilerConfig} from '../config';
 import {ConstantPool} from '../constant_pool';
@@ -20,7 +20,7 @@ import {CompiledStylesheet, StyleCompiler} from '../style_compiler';
 import {SummaryResolver} from '../summary_resolver';
 import {TemplateAst} from '../template_parser/template_ast';
 import {TemplateParser} from '../template_parser/template_parser';
-import {Console, OutputContext, SyncAsync, stringify} from '../util';
+import {Console, OutputContext, stringify, SyncAsync} from '../util';
 import {ViewCompiler} from '../view_compiler/view_compiler';
 
 export interface ModuleWithComponentFactories {
@@ -97,7 +97,9 @@ export class JitCompiler {
     }
   }
 
-  hasAotSummary(ref: Type) { return !!this._summaryResolver.resolveSummary(ref); }
+  hasAotSummary(ref: Type) {
+    return !!this._summaryResolver.resolveSummary(ref);
+  }
 
   private _filterJitIdentifiers(ids: CompileIdentifierMetadata[]): any[] {
     return ids.map(mod => mod.reference).filter((ref) => !this.hasAotSummary(ref));
@@ -124,12 +126,12 @@ export class JitCompiler {
 
   private _loadModules(mainModule: any, isSync: boolean): SyncAsync<any> {
     const loading: Promise<any>[] = [];
-    const mainNgModule = this._metadataResolver.getNgModuleMetadata(mainModule) !;
+    const mainNgModule = this._metadataResolver.getNgModuleMetadata(mainModule)!;
     // Note: for runtime compilation, we want to transitively compile all modules,
     // so we also need to load the declared directives / pipes for all nested modules.
     this._filterJitIdentifiers(mainNgModule.transitiveModule.modules).forEach((nestedNgModule) => {
       // getNgModuleMetadata only returns null if the value passed in is not an NgModule
-      const moduleMeta = this._metadataResolver.getNgModuleMetadata(nestedNgModule) !;
+      const moduleMeta = this._metadataResolver.getNgModuleMetadata(nestedNgModule)!;
       this._filterJitIdentifiers(moduleMeta.declaredDirectives).forEach((ref) => {
         const promise =
             this._metadataResolver.loadDirectiveMetadata(moduleMeta.type.reference, ref, isSync);
@@ -144,9 +146,9 @@ export class JitCompiler {
   }
 
   private _compileModule(moduleType: Type): object {
-    let ngModuleFactory = this._compiledNgModuleCache.get(moduleType) !;
+    let ngModuleFactory = this._compiledNgModuleCache.get(moduleType)!;
     if (!ngModuleFactory) {
-      const moduleMeta = this._metadataResolver.getNgModuleMetadata(moduleType) !;
+      const moduleMeta = this._metadataResolver.getNgModuleMetadata(moduleType)!;
       // Always provide a bound Compiler
       const extraProviders = this.getExtraNgModuleProviders(moduleMeta.type.reference);
       const outputCtx = createOutputContext();
@@ -162,13 +164,13 @@ export class JitCompiler {
    * @internal
    */
   _compileComponents(mainModule: Type, allComponentFactories: object[]|null) {
-    const ngModule = this._metadataResolver.getNgModuleMetadata(mainModule) !;
+    const ngModule = this._metadataResolver.getNgModuleMetadata(mainModule)!;
     const moduleByJitDirective = new Map<any, CompileNgModuleMetadata>();
     const templates = new Set<CompiledTemplate>();
 
     const transJitModules = this._filterJitIdentifiers(ngModule.transitiveModule.modules);
     transJitModules.forEach((localMod) => {
-      const localModuleMeta = this._metadataResolver.getNgModuleMetadata(localMod) !;
+      const localModuleMeta = this._metadataResolver.getNgModuleMetadata(localMod)!;
       this._filterJitIdentifiers(localModuleMeta.declaredDirectives).forEach((dirRef) => {
         moduleByJitDirective.set(dirRef, localModuleMeta);
         const dirMeta = this._metadataResolver.getDirectiveMetadata(dirRef);
@@ -184,12 +186,12 @@ export class JitCompiler {
       });
     });
     transJitModules.forEach((localMod) => {
-      const localModuleMeta = this._metadataResolver.getNgModuleMetadata(localMod) !;
+      const localModuleMeta = this._metadataResolver.getNgModuleMetadata(localMod)!;
       this._filterJitIdentifiers(localModuleMeta.declaredDirectives).forEach((dirRef) => {
         const dirMeta = this._metadataResolver.getDirectiveMetadata(dirRef);
         if (dirMeta.isComponent) {
           dirMeta.entryComponents.forEach((entryComponentType) => {
-            const moduleMeta = moduleByJitDirective.get(entryComponentType.componentType) !;
+            const moduleMeta = moduleByJitDirective.get(entryComponentType.componentType)!;
             templates.add(
                 this._createCompiledHostTemplate(entryComponentType.componentType, moduleMeta));
           });
@@ -197,7 +199,7 @@ export class JitCompiler {
       });
       localModuleMeta.entryComponents.forEach((entryComponentType) => {
         if (!this.hasAotSummary(entryComponentType.componentType)) {
-          const moduleMeta = moduleByJitDirective.get(entryComponentType.componentType) !;
+          const moduleMeta = moduleByJitDirective.get(entryComponentType.componentType)!;
           templates.add(
               this._createCompiledHostTemplate(entryComponentType.componentType, moduleMeta));
         }
@@ -227,8 +229,9 @@ export class JitCompiler {
   private _createCompiledHostTemplate(compType: Type, ngModule: CompileNgModuleMetadata):
       CompiledTemplate {
     if (!ngModule) {
-      throw new Error(
+      throw new Error(`Component ${
-          `Component ${stringify(compType)} is not part of any NgModule or the module has not been imported into your module.`);
+          stringify(
+              compType)} is not part of any NgModule or the module has not been imported into your module.`);
     }
     let compiledTemplate = this._compiledHostTemplateCache.get(compType);
     if (!compiledTemplate) {
@@ -267,7 +270,7 @@ export class JitCompiler {
     compMeta.template !.externalStylesheets.forEach((stylesheetMeta) => {
       const compiledStylesheet =
           this._styleCompiler.compileStyles(createOutputContext(), compMeta, stylesheetMeta);
-      externalStylesheetsByModuleUrl.set(stylesheetMeta.moduleUrl !, compiledStylesheet);
+      externalStylesheetsByModuleUrl.set(stylesheetMeta.moduleUrl!, compiledStylesheet);
     });
     this._resolveStylesCompileResult(componentStylesheet, externalStylesheetsByModuleUrl);
     const pipes = template.ngModule.transitiveModule.pipes.map(
@@ -295,14 +298,14 @@ export class JitCompiler {
     const pipes = ngModule.transitiveModule.pipes.map(
         pipe => this._metadataResolver.getPipeSummary(pipe.reference));
     return this._templateParser.parse(
-        compMeta, compMeta.template !.htmlAst !, directives, pipes, ngModule.schemas,
+        compMeta, compMeta.template !.htmlAst!, directives, pipes, ngModule.schemas,
         templateSourceUrl(ngModule.type, compMeta, compMeta.template !), preserveWhitespaces);
   }
 
   private _resolveStylesCompileResult(
       result: CompiledStylesheet, externalStylesheetsByModuleUrl: Map<string, CompiledStylesheet>) {
     result.dependencies.forEach((dep, i) => {
-      const nestedCompileResult = externalStylesheetsByModuleUrl.get(dep.moduleUrl) !;
+      const nestedCompileResult = externalStylesheetsByModuleUrl.get(dep.moduleUrl)!;
       const nestedStylesArr = this._resolveAndEvalStylesCompileResult(
           nestedCompileResult, externalStylesheetsByModuleUrl);
       dep.setValue(nestedStylesArr);
@@ -329,7 +332,7 @@ export class JitCompiler {
 }
 
 class CompiledTemplate {
-  private _viewClass: Function = null !;
+  private _viewClass: Function = null!;
   isCompiled = false;
 
   constructor(

packages/compiler/src/jit_compiler_facade.ts

@@ -16,13 +16,13 @@ import {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from './ml_parser/int
 import {DeclareVarStmt, Expression, LiteralExpr, Statement, StmtModifier, WrappedNodeExpr} from './output/output_ast';
 import {JitEvaluator} from './output/output_jit';
 import {ParseError, ParseSourceSpan, r3JitTypeSourceSpan} from './parse_util';
-import {R3DependencyMetadata, R3FactoryTarget, R3ResolvedDependencyType, compileFactoryFunction} from './render3/r3_factory';
+import {compileFactoryFunction, R3DependencyMetadata, R3FactoryTarget, R3ResolvedDependencyType} from './render3/r3_factory';
 import {R3JitReflector} from './render3/r3_jit';
-import {R3InjectorMetadata, R3NgModuleMetadata, compileInjector, compileNgModule} from './render3/r3_module_compiler';
+import {compileInjector, compileNgModule, R3InjectorMetadata, R3NgModuleMetadata} from './render3/r3_module_compiler';
-import {R3PipeMetadata, compilePipeFromMetadata} from './render3/r3_pipe_compiler';
+import {compilePipeFromMetadata, R3PipeMetadata} from './render3/r3_pipe_compiler';
 import {R3Reference} from './render3/util';
 import {R3DirectiveMetadata, R3QueryMetadata} from './render3/view/api';
-import {ParsedHostBindings, compileComponentFromMetadata, compileDirectiveFromMetadata, parseHostBindings, verifyHostBindings} from './render3/view/compiler';
+import {compileComponentFromMetadata, compileDirectiveFromMetadata, ParsedHostBindings, parseHostBindings, verifyHostBindings} from './render3/view/compiler';
 import {makeBindingParser, parseTemplate} from './render3/view/template';
 import {ResourceLoader} from './resource_loader';
 import {DomElementSchemaRegistry} from './schema/dom_element_schema_registry';
@@ -277,7 +277,7 @@ function wrapExpression(obj: any, property: string): WrappedNodeExpr<any>|undefi
   }
 }
 
-function computeProvidedIn(providedIn: Type | string | null | undefined): Expression {
+function computeProvidedIn(providedIn: Type|string|null|undefined): Expression {
   if (providedIn == null || typeof providedIn === 'string') {
     return new LiteralExpr(providedIn);
   } else {
@@ -305,8 +305,8 @@ function convertR3DependencyMetadata(facade: R3DependencyMetadataFacade): R3Depe
   };
 }
 
-function convertR3DependencyMetadataArray(facades: R3DependencyMetadataFacade[] | null | undefined):
+function convertR3DependencyMetadataArray(facades: R3DependencyMetadataFacade[]|null|
-    R3DependencyMetadata[]|null {
+                                          undefined): R3DependencyMetadata[]|null {
   return facades == null ? null : facades.map(convertR3DependencyMetadata);
 }
 
@@ -356,13 +356,11 @@ function isOutput(value: any): value is Output {
 }
 
 function parseInputOutputs(values: string[]): StringMap {
-  return values.reduce(
+  return values.reduce((map, value) => {
-      (map, value) => {
     const [field, property] = value.split(',').map(piece => piece.trim());
     map[field] = property || field;
     return map;
-      },
+  }, {} as StringMap);
-      {} as StringMap);
 }
 
 export function publishFacade(global: any) {

packages/compiler/src/metadata_resolver.ts

@@ -12,7 +12,7 @@ import {assertArrayOfStrings, assertInterpolationSymbols} from './assertions';
 import * as cpl from './compile_metadata';
 import {CompileReflector} from './compile_reflector';
 import {CompilerConfig} from './config';
-import {ChangeDetectionStrategy, Component, Directive, Injectable, ModuleWithProviders, Provider, Query, SchemaMetadata, Type, ViewEncapsulation, createAttribute, createComponent, createHost, createInject, createInjectable, createInjectionToken, createNgModule, createOptional, createSelf, createSkipSelf} from './core';
+import {ChangeDetectionStrategy, Component, createAttribute, createComponent, createHost, createInject, createInjectable, createInjectionToken, createNgModule, createOptional, createSelf, createSkipSelf, Directive, Injectable, ModuleWithProviders, Provider, Query, SchemaMetadata, Type, ViewEncapsulation} from './core';
 import {DirectiveNormalizer} from './directive_normalizer';
 import {DirectiveResolver, findLast} from './directive_resolver';
 import {Identifiers} from './identifiers';
@@ -23,7 +23,7 @@ import {PipeResolver} from './pipe_resolver';
 import {ElementSchemaRegistry} from './schema/element_schema_registry';
 import {CssSelector} from './selector';
 import {SummaryResolver} from './summary_resolver';
-import {Console, SyncAsync, ValueTransformer, isPromise, noUndefined, resolveForwardRef, stringify, syntaxError, visitValue} from './util';
+import {Console, isPromise, noUndefined, resolveForwardRef, stringify, SyncAsync, syntaxError, ValueTransformer, visitValue} from './util';
 
 export type ErrorCollector = (error: any, type?: any) => void;
 
@@ -55,7 +55,9 @@ export class CompileMetadataResolver {
       private _staticSymbolCache: StaticSymbolCache, private _reflector: CompileReflector,
       private _errorCollector?: ErrorCollector) {}
 
-  getReflector(): CompileReflector { return this._reflector; }
+  getReflector(): CompileReflector {
+    return this._reflector;
+  }
 
   clearCacheFor(type: Type) {
     const dirMeta = this._directiveCache.get(type);
@@ -176,7 +178,7 @@ export class CompileMetadataResolver {
     }
     // Note: ! is ok here as this method should only be called with normalized directive
     // metadata, which always fills in the selector.
-    const template = CssSelector.parse(compMeta.selector !)[0].getMatchingElementTemplate();
+    const template = CssSelector.parse(compMeta.selector!)[0].getMatchingElementTemplate();
     const templateUrl = '';
     const htmlAst = this._htmlParser.parse(template, templateUrl);
     return cpl.CompileDirectiveMetadata.create({
@@ -209,8 +211,8 @@ export class CompileMetadataResolver {
       guards: {},
       viewQueries: [],
       componentViewType: hostViewType,
-      rendererType:
+      rendererType: {id: '__Host__', encapsulation: ViewEncapsulation.None, styles: [], data: {}} as
-          {id: '__Host__', encapsulation: ViewEncapsulation.None, styles: [], data: {}} as object,
+          object,
       entryComponents: [],
       componentFactory: null
     });
@@ -221,9 +223,9 @@ export class CompileMetadataResolver {
       return null;
     }
     directiveType = resolveForwardRef(directiveType);
-    const {annotation, metadata} = this.getNonNormalizedDirectiveMetadata(directiveType) !;
+    const {annotation, metadata} = this.getNonNormalizedDirectiveMetadata(directiveType)!;
 
-    const createDirectiveMetadata = (templateMetadata: cpl.CompileTemplateMetadata | null) => {
+    const createDirectiveMetadata = (templateMetadata: cpl.CompileTemplateMetadata|null) => {
       const normalizedDirMeta = new cpl.CompileDirectiveMetadata({
         isHost: false,
         type: metadata.type,
@@ -248,7 +250,7 @@ export class CompileMetadataResolver {
         template: templateMetadata
       });
       if (templateMetadata) {
-        this.initComponentFactory(metadata.componentFactory !, templateMetadata.ngContentSelectors);
+        this.initComponentFactory(metadata.componentFactory!, templateMetadata.ngContentSelectors);
       }
       this._directiveCache.set(directiveType, normalizedDirMeta);
       this._summaryCache.set(directiveType, normalizedDirMeta.toSummary());
@@ -296,7 +298,7 @@ export class CompileMetadataResolver {
     if (!dirMeta) {
       return null;
     }
-    let nonNormalizedTemplateMetadata: cpl.CompileTemplateMetadata = undefined !;
+    let nonNormalizedTemplateMetadata: cpl.CompileTemplateMetadata = undefined!;
 
     if (createComponent.isTypeOf(dirMeta)) {
       // component
@@ -323,7 +325,7 @@ export class CompileMetadataResolver {
       });
     }
 
-    let changeDetectionStrategy: ChangeDetectionStrategy = null !;
+    let changeDetectionStrategy: ChangeDetectionStrategy = null!;
     let viewProviders: cpl.CompileProviderMetadata[] = [];
     let entryComponentMetadata: cpl.CompileEntryComponentMetadata[] = [];
     let selector = dirMeta.selector;
@@ -331,7 +333,7 @@ export class CompileMetadataResolver {
     if (createComponent.isTypeOf(dirMeta)) {
       // Component
       const compMeta = dirMeta as Component;
-      changeDetectionStrategy = compMeta.changeDetection !;
+      changeDetectionStrategy = compMeta.changeDetection!;
       if (compMeta.viewProviders) {
         viewProviders = this._getProvidersMetadata(
             compMeta.viewProviders, entryComponentMetadata,
@@ -339,7 +341,7 @@ export class CompileMetadataResolver {
       }
       if (compMeta.entryComponents) {
         entryComponentMetadata = flattenAndDedupeArray(compMeta.entryComponents)
-                                     .map((type) => this._getEntryComponentMetadata(type) !)
+                                     .map((type) => this._getEntryComponentMetadata(type)!)
                                      .concat(entryComponentMetadata);
       }
       if (!selector) {
@@ -348,7 +350,7 @@ export class CompileMetadataResolver {
     } else {
       // Directive
       if (!selector) {
-        selector = null !;
+        selector = null!;
       }
     }
 
@@ -401,11 +403,12 @@ export class CompileMetadataResolver {
    * This assumes `loadNgModuleDirectiveAndPipeMetadata` has been called first.
    */
   getDirectiveMetadata(directiveType: any): cpl.CompileDirectiveMetadata {
-    const dirMeta = this._directiveCache.get(directiveType) !;
+    const dirMeta = this._directiveCache.get(directiveType)!;
     if (!dirMeta) {
       this._reportError(
           syntaxError(
-              `Illegal state: getDirectiveMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Directive ${stringifyType(directiveType)}.`),
+              `Illegal state: getDirectiveMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Directive ${
+                  stringifyType(directiveType)}.`),
           directiveType);
     }
     return dirMeta;
@@ -530,7 +533,7 @@ export class CompileMetadataResolver {
 
     if (meta.imports) {
       flattenAndDedupeArray(meta.imports).forEach((importedType) => {
-        let importedModuleType: Type = undefined !;
+        let importedModuleType: Type = undefined!;
         if (isValidType(importedType)) {
           importedModuleType = importedType;
         } else if (importedType && importedType.ngModule) {
@@ -549,8 +552,9 @@ export class CompileMetadataResolver {
           if (!alreadyCollecting) alreadyCollecting = new Set();
           if (alreadyCollecting.has(importedModuleType)) {
             this._reportError(
-                syntaxError(
+                syntaxError(`${this._getTypeDescriptor(importedModuleType)} '${
-                    `${this._getTypeDescriptor(importedModuleType)} '${stringifyType(importedType)}' is imported recursively by the module '${stringifyType(moduleType)}'.`),
+                    stringifyType(importedType)}' is imported recursively by the module '${
+                    stringifyType(moduleType)}'.`),
                 moduleType);
             return;
           }
@@ -560,8 +564,9 @@ export class CompileMetadataResolver {
           alreadyCollecting.delete(importedModuleType);
           if (!importedModuleSummary) {
             this._reportError(
-                syntaxError(
+                syntaxError(`Unexpected ${this._getTypeDescriptor(importedType)} '${
-                    `Unexpected ${this._getTypeDescriptor(importedType)} '${stringifyType(importedType)}' imported by the module '${stringifyType(moduleType)}'. Please add a @NgModule annotation.`),
+                    stringifyType(importedType)}' imported by the module '${
+                    stringifyType(moduleType)}'. Please add a @NgModule annotation.`),
                 moduleType);
             return;
           }
@@ -569,7 +574,8 @@ export class CompileMetadataResolver {
         } else {
           this._reportError(
               syntaxError(
-                  `Unexpected value '${stringifyType(importedType)}' imported by the module '${stringifyType(moduleType)}'`),
+                  `Unexpected value '${stringifyType(importedType)}' imported by the module '${
+                      stringifyType(moduleType)}'`),
               moduleType);
           return;
         }
@@ -581,15 +587,17 @@ export class CompileMetadataResolver {
         if (!isValidType(exportedType)) {
           this._reportError(
               syntaxError(
-                  `Unexpected value '${stringifyType(exportedType)}' exported by the module '${stringifyType(moduleType)}'`),
+                  `Unexpected value '${stringifyType(exportedType)}' exported by the module '${
+                      stringifyType(moduleType)}'`),
               moduleType);
           return;
         }
         if (!alreadyCollecting) alreadyCollecting = new Set();
         if (alreadyCollecting.has(exportedType)) {
           this._reportError(
-              syntaxError(
+              syntaxError(`${this._getTypeDescriptor(exportedType)} '${
-                  `${this._getTypeDescriptor(exportedType)} '${stringify(exportedType)}' is exported recursively by the module '${stringifyType(moduleType)}'`),
+                  stringify(exportedType)}' is exported recursively by the module '${
+                  stringifyType(moduleType)}'`),
               moduleType);
           return;
         }
@@ -612,7 +620,8 @@ export class CompileMetadataResolver {
         if (!isValidType(declaredType)) {
           this._reportError(
               syntaxError(
-                  `Unexpected value '${stringifyType(declaredType)}' declared by the module '${stringifyType(moduleType)}'`),
+                  `Unexpected value '${stringifyType(declaredType)}' declared by the module '${
+                      stringifyType(moduleType)}'`),
               moduleType);
           return;
         }
@@ -634,8 +643,10 @@ export class CompileMetadataResolver {
           this._addTypeToModule(declaredType, moduleType);
         } else {
           this._reportError(
-              syntaxError(
+              syntaxError(`Unexpected ${this._getTypeDescriptor(declaredType)} '${
-                  `Unexpected ${this._getTypeDescriptor(declaredType)} '${stringifyType(declaredType)}' declared by the module '${stringifyType(moduleType)}'. Please add a @Pipe/@Directive/@Component annotation.`),
+                  stringifyType(declaredType)}' declared by the module '${
+                  stringifyType(
+                      moduleType)}'. Please add a @Pipe/@Directive/@Component annotation.`),
               moduleType);
           return;
         }
@@ -653,8 +664,9 @@ export class CompileMetadataResolver {
         transitiveModule.addExportedPipe(exportedId);
       } else {
         this._reportError(
-            syntaxError(
+            syntaxError(`Can't export ${this._getTypeDescriptor(exportedId.reference)} ${
-                `Can't export ${this._getTypeDescriptor(exportedId.reference)} ${stringifyType(exportedId.reference)} from ${stringifyType(moduleType)} as it was neither declared nor imported!`),
+                stringifyType(exportedId.reference)} from ${
+                stringifyType(moduleType)} as it was neither declared nor imported!`),
             moduleType);
         return;
       }
@@ -670,15 +682,16 @@ export class CompileMetadataResolver {
 
     if (meta.entryComponents) {
       entryComponents.push(...flattenAndDedupeArray(meta.entryComponents)
-                               .map(type => this._getEntryComponentMetadata(type) !));
+                               .map(type => this._getEntryComponentMetadata(type)!));
     }
 
     if (meta.bootstrap) {
       flattenAndDedupeArray(meta.bootstrap).forEach(type => {
         if (!isValidType(type)) {
           this._reportError(
-              syntaxError(
+              syntaxError(`Unexpected value '${
-                  `Unexpected value '${stringifyType(type)}' used in the bootstrap property of module '${stringifyType(moduleType)}'`),
+                  stringifyType(type)}' used in the bootstrap property of module '${
+                  stringifyType(moduleType)}'`),
               moduleType);
           return;
         }
@@ -687,7 +700,7 @@ export class CompileMetadataResolver {
     }
 
     entryComponents.push(
-        ...bootstrapComponents.map(type => this._getEntryComponentMetadata(type.reference) !));
+        ...bootstrapComponents.map(type => this._getEntryComponentMetadata(type.reference)!));
 
     if (meta.schemas) {
       schemas.push(...flattenAndDedupeArray(meta.schemas));
@@ -710,7 +723,7 @@ export class CompileMetadataResolver {
     });
 
     entryComponents.forEach((id) => transitiveModule.addEntryComponent(id));
-    providers.forEach((provider) => transitiveModule.addProvider(provider, compileMeta !.type));
+    providers.forEach((provider) => transitiveModule.addProvider(provider, compileMeta!.type));
     transitiveModule.addModule(compileMeta.type);
     this._ngModuleCache.set(moduleType, compileMeta);
     return compileMeta;
@@ -753,9 +766,13 @@ export class CompileMetadataResolver {
     if (oldModule && oldModule !== moduleType) {
       this._reportError(
           syntaxError(
-              `Type ${stringifyType(type)} is part of the declarations of 2 modules: ${stringifyType(oldModule)} and ${stringifyType(moduleType)}! ` +
+              `Type ${stringifyType(type)} is part of the declarations of 2 modules: ${
-              `Please consider moving ${stringifyType(type)} to a higher module that imports ${stringifyType(oldModule)} and ${stringifyType(moduleType)}. ` +
+                  stringifyType(oldModule)} and ${stringifyType(moduleType)}! ` +
-              `You can also create a new NgModule that exports and includes ${stringifyType(type)} then import that NgModule in ${stringifyType(oldModule)} and ${stringifyType(moduleType)}.`),
+              `Please consider moving ${stringifyType(type)} to a higher module that imports ${
+                  stringifyType(oldModule)} and ${stringifyType(moduleType)}. ` +
+              `You can also create a new NgModule that exports and includes ${
+                  stringifyType(type)} then import that NgModule in ${
+                  stringifyType(oldModule)} and ${stringifyType(moduleType)}.`),
           moduleType);
       return;
     }
@@ -870,7 +887,8 @@ export class CompileMetadataResolver {
     if (!pipeMeta) {
       this._reportError(
           syntaxError(
-              `Illegal state: getPipeMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Pipe ${stringifyType(pipeType)}.`),
+              `Illegal state: getPipeMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Pipe ${
+                  stringifyType(pipeType)}.`),
           pipeType);
     }
     return pipeMeta || null;
@@ -898,7 +916,7 @@ export class CompileMetadataResolver {
 
   private _loadPipeMetadata(pipeType: any): cpl.CompilePipeMetadata {
     pipeType = resolveForwardRef(pipeType);
-    const pipeAnnotation = this._pipeResolver.resolve(pipeType) !;
+    const pipeAnnotation = this._pipeResolver.resolve(pipeType)!;
 
     const pipeMeta = new cpl.CompilePipeMetadata({
       type: this._getTypeMetadata(pipeType),
@@ -962,7 +980,6 @@ export class CompileMetadataResolver {
         isOptional,
         token: this._getTokenMetadata(token)
       };
-
     });
 
     if (hasUnknownDeps) {
@@ -1000,7 +1017,7 @@ export class CompileMetadataResolver {
         this._getProvidersMetadata(provider, targetEntryComponents, debugInfo, compileProviders);
       } else {
         provider = resolveForwardRef(provider);
-        let providerMeta: cpl.ProviderMeta = undefined !;
+        let providerMeta: cpl.ProviderMeta = undefined!;
         if (provider && typeof provider === 'object' && provider.hasOwnProperty('provide')) {
           this._validateProvider(provider);
           providerMeta = new cpl.ProviderMeta(provider.provide, provider);
@@ -1027,8 +1044,11 @@ export class CompileMetadataResolver {
                       [])
                   .join(', ');
           this._reportError(
-              syntaxError(
+              syntaxError(`Invalid ${
-                  `Invalid ${debugInfo ? debugInfo : 'provider'} - only instances of Provider and Type are allowed, got: [${providersInfo}]`),
+                  debugInfo ?
+                      debugInfo :
+                      'provider'} - only instances of Provider and Type are allowed, got: [${
+                  providersInfo}]`),
               type);
           return;
         }
@@ -1045,8 +1065,8 @@ export class CompileMetadataResolver {
 
   private _validateProvider(provider: any): void {
     if (provider.hasOwnProperty('useClass') && provider.useClass == null) {
-      this._reportError(syntaxError(
+      this._reportError(syntaxError(`Invalid provider for ${
-          `Invalid provider for ${stringifyType(provider.provide)}. useClass cannot be ${provider.useClass}.
+          stringifyType(provider.provide)}. useClass cannot be ${provider.useClass}.
            Usually it happens when:
            1. There's a circular dependency (might be caused by using index.ts (barrel) files).
            2. Class was used before it was declared. Use forwardRef in this case.`));
@@ -1085,12 +1105,12 @@ export class CompileMetadataResolver {
       cpl.CompileEntryComponentMetadata|null {
     const dirMeta = this.getNonNormalizedDirectiveMetadata(dirType);
     if (dirMeta && dirMeta.metadata.isComponent) {
-      return {componentType: dirType, componentFactory: dirMeta.metadata.componentFactory !};
+      return {componentType: dirType, componentFactory: dirMeta.metadata.componentFactory!};
     }
     const dirSummary =
         <cpl.CompileDirectiveSummary>this._loadSummary(dirType, cpl.CompileSummaryKind.Directive);
     if (dirSummary && dirSummary.isComponent) {
-      return {componentType: dirType, componentFactory: dirSummary.componentFactory !};
+      return {componentType: dirType, componentFactory: dirSummary.componentFactory!};
     }
     if (throwIfNotFound) {
       throw syntaxError(`${dirType.name} cannot be used as an entry component.`);
@@ -1108,9 +1128,9 @@ export class CompileMetadataResolver {
   }
 
   getProviderMetadata(provider: cpl.ProviderMeta): cpl.CompileProviderMetadata {
-    let compileDeps: cpl.CompileDiDependencyMetadata[] = undefined !;
+    let compileDeps: cpl.CompileDiDependencyMetadata[] = undefined!;
-    let compileTypeMetadata: cpl.CompileTypeMetadata = null !;
+    let compileTypeMetadata: cpl.CompileTypeMetadata = null!;
-    let compileFactoryMetadata: cpl.CompileFactoryMetadata = null !;
+    let compileFactoryMetadata: cpl.CompileFactoryMetadata = null!;
     let token: cpl.CompileTokenMetadata = this._getTokenMetadata(provider.token);
 
     if (provider.useClass) {
@@ -1152,7 +1172,9 @@ export class CompileMetadataResolver {
     return res;
   }
 
-  private _queryVarBindings(selector: any): string[] { return selector.split(/\s*,\s*/); }
+  private _queryVarBindings(selector: any): string[] {
+    return selector.split(/\s*,\s*/);
+  }
 
   private _getQueryMetadata(q: Query, propertyName: string, typeOrFunc: Type|Function):
       cpl.CompileQueryMetadata {
@@ -1163,8 +1185,8 @@ export class CompileMetadataResolver {
     } else {
       if (!q.selector) {
         this._reportError(
-            syntaxError(
+            syntaxError(`Can't construct a query for the property "${propertyName}" of "${
-                `Can't construct a query for the property "${propertyName}" of "${stringifyType(typeOrFunc)}" since the query selector wasn't defined.`),
+                stringifyType(typeOrFunc)}" since the query selector wasn't defined.`),
             typeOrFunc);
         selectors = [];
       } else {
@@ -1175,8 +1197,9 @@ export class CompileMetadataResolver {
     return {
       selectors,
       first: q.first,
-      descendants: q.descendants, propertyName,
+      descendants: q.descendants,
-      read: q.read ? this._getTokenMetadata(q.read) : null !,
+      propertyName,
+      read: q.read ? this._getTokenMetadata(q.read) : null!,
       static: q.static
     };
   }

packages/compiler/src/ml_parser/ast.ts

@@ -24,7 +24,9 @@ export class Text extends NodeWithI18n {
   constructor(public value: string, sourceSpan: ParseSourceSpan, i18n?: I18nMeta) {
     super(sourceSpan, i18n);
   }
-  visit(visitor: Visitor, context: any): any { return visitor.visitText(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitText(this, context);
+  }
 }
 
 export class Expansion extends NodeWithI18n {
@@ -33,7 +35,9 @@ export class Expansion extends NodeWithI18n {
       sourceSpan: ParseSourceSpan, public switchValueSourceSpan: ParseSourceSpan, i18n?: I18nMeta) {
     super(sourceSpan, i18n);
   }
-  visit(visitor: Visitor, context: any): any { return visitor.visitExpansion(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitExpansion(this, context);
+  }
 }
 
 export class ExpansionCase implements Node {
@@ -41,7 +45,9 @@ export class ExpansionCase implements Node {
       public value: string, public expression: Node[], public sourceSpan: ParseSourceSpan,
       public valueSourceSpan: ParseSourceSpan, public expSourceSpan: ParseSourceSpan) {}
 
-  visit(visitor: Visitor, context: any): any { return visitor.visitExpansionCase(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitExpansionCase(this, context);
+  }
 }
 
 export class Attribute extends NodeWithI18n {
@@ -50,7 +56,9 @@ export class Attribute extends NodeWithI18n {
       public valueSpan?: ParseSourceSpan, i18n?: I18nMeta) {
     super(sourceSpan, i18n);
   }
-  visit(visitor: Visitor, context: any): any { return visitor.visitAttribute(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitAttribute(this, context);
+  }
 }
 
 export class Element extends NodeWithI18n {
@@ -60,12 +68,16 @@ export class Element extends NodeWithI18n {
       public endSourceSpan: ParseSourceSpan|null = null, i18n?: I18nMeta) {
     super(sourceSpan, i18n);
   }
-  visit(visitor: Visitor, context: any): any { return visitor.visitElement(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitElement(this, context);
+  }
 }
 
 export class Comment implements Node {
   constructor(public value: string|null, public sourceSpan: ParseSourceSpan) {}
-  visit(visitor: Visitor, context: any): any { return visitor.visitComment(this, context); }
+  visit(visitor: Visitor, context: any): any {
+    return visitor.visitComment(this, context);
+  }
 }
 
 export interface Visitor {
@@ -85,7 +97,7 @@ export function visitAll(visitor: Visitor, nodes: Node[], context: any = null):
   const result: any[] = [];
 
   const visit = visitor.visit ?
-      (ast: Node) => visitor.visit !(ast, context) || ast.visit(visitor, context) :
+      (ast: Node) => visitor.visit!(ast, context) || ast.visit(visitor, context) :
       (ast: Node) => ast.visit(visitor, context);
   nodes.forEach(ast => {
     const astResult = visit(ast);
@@ -111,7 +123,9 @@ export class RecursiveVisitor implements Visitor {
   visitComment(ast: Comment, context: any): any {}
 
   visitExpansion(ast: Expansion, context: any): any {
-    return this.visitChildren(context, visit => { visit(ast.cases); });
+    return this.visitChildren(context, visit => {
+      visit(ast.cases);
+    });
   }
 
   visitExpansionCase(ast: ExpansionCase, context: any): any {}
@@ -120,7 +134,7 @@ export class RecursiveVisitor implements Visitor {
       context: any, cb: (visit: (<V extends Node>(children: V[]|undefined) => void)) => void) {
     let results: any[][] = [];
     let t = this;
-    function visit<T extends Node>(children: T[] | undefined) {
+    function visit<T extends Node>(children: T[]|undefined) {
       if (children) results.push(visitAll(t, children, context));
     }
     cb(visit);

packages/compiler/src/ml_parser/html_parser.ts

@@ -8,12 +8,14 @@
 
 import {getHtmlTagDefinition} from './html_tags';
 import {TokenizeOptions} from './lexer';
-import {ParseTreeResult, Parser} from './parser';
+import {Parser, ParseTreeResult} from './parser';
 
 export {ParseTreeResult, TreeError} from './parser';
 
 export class HtmlParser extends Parser {
-  constructor() { super(getHtmlTagDefinition); }
+  constructor() {
+    super(getHtmlTagDefinition);
+  }
 
   parse(source: string, url: string, options?: TokenizeOptions): ParseTreeResult {
     return super.parse(source, url, options);

packages/compiler/src/ml_parser/html_tags.ts

@@ -18,9 +18,14 @@ export class HtmlTagDefinition implements TagDefinition {
   ignoreFirstLf: boolean;
   canSelfClose: boolean = false;
 
-  constructor(
+  constructor({
-      {closedByChildren, implicitNamespacePrefix, contentType = TagContentType.PARSABLE_DATA,
+    closedByChildren,
-       closedByParent = false, isVoid = false, ignoreFirstLf = false}: {
+    implicitNamespacePrefix,
+    contentType = TagContentType.PARSABLE_DATA,
+    closedByParent = false,
+    isVoid = false,
+    ignoreFirstLf = false
+  }: {
     closedByChildren?: string[],
     closedByParent?: boolean,
     implicitNamespacePrefix?: string,
@@ -43,11 +48,11 @@ export class HtmlTagDefinition implements TagDefinition {
   }
 }
 
-let _DEFAULT_TAG_DEFINITION !: HtmlTagDefinition;
+let _DEFAULT_TAG_DEFINITION!: HtmlTagDefinition;
 
 // see http://www.w3.org/TR/html51/syntax.html#optional-tags
 // This implementation does not fully conform to the HTML5 spec.
-let TAG_DEFINITIONS !: {[key: string]: HtmlTagDefinition};
+let TAG_DEFINITIONS!: {[key: string]: HtmlTagDefinition};
 
 export function getHtmlTagDefinition(tagName: string): HtmlTagDefinition {
   if (!TAG_DEFINITIONS) {

packages/compiler/src/ml_parser/html_whitespaces.ts

@@ -81,11 +81,17 @@ export class WhitespaceVisitor implements html.Visitor {
     return null;
   }
 
-  visitComment(comment: html.Comment, context: any): any { return comment; }
+  visitComment(comment: html.Comment, context: any): any {
+    return comment;
+  }
 
-  visitExpansion(expansion: html.Expansion, context: any): any { return expansion; }
+  visitExpansion(expansion: html.Expansion, context: any): any {
+    return expansion;
+  }
 
-  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any { return expansionCase; }
+  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any {
+    return expansionCase;
+  }
 }
 
 export function removeWhitespaces(htmlAstWithErrors: ParseTreeResult): ParseTreeResult {

packages/compiler/src/ml_parser/icu_ast_expander.ts

@@ -46,7 +46,9 @@ export class ExpansionResult {
 }
 
 export class ExpansionError extends ParseError {
-  constructor(span: ParseSourceSpan, errorMsg: string) { super(span, errorMsg); }
+  constructor(span: ParseSourceSpan, errorMsg: string) {
+    super(span, errorMsg);
+  }
 }
 
 /**
@@ -64,11 +66,17 @@ class _Expander implements html.Visitor {
         element.startSourceSpan, element.endSourceSpan);
   }
 
-  visitAttribute(attribute: html.Attribute, context: any): any { return attribute; }
+  visitAttribute(attribute: html.Attribute, context: any): any {
+    return attribute;
+  }
 
-  visitText(text: html.Text, context: any): any { return text; }
+  visitText(text: html.Text, context: any): any {
+    return text;
+  }
 
-  visitComment(comment: html.Comment, context: any): any { return comment; }
+  visitComment(comment: html.Comment, context: any): any {
+    return comment;
+  }
 
   visitExpansion(icu: html.Expansion, context: any): any {
     this.isExpanded = true;
@@ -87,7 +95,7 @@ function _expandPluralForm(ast: html.Expansion, errors: ParseError[]): html.Elem
     if (PLURAL_CASES.indexOf(c.value) == -1 && !c.value.match(/^=\d+$/)) {
       errors.push(new ExpansionError(
           c.valueSourceSpan,
-          `Plural cases should be "=<number>" or one of ${PLURAL_CASES.join(", ")}`));
+          `Plural cases should be "=<number>" or one of ${PLURAL_CASES.join(', ')}`));
     }
 
     const expansionResult = expandNodes(c.expression);

packages/compiler/src/ml_parser/lexer.ts

@@ -764,7 +764,7 @@ function mergeTextTokens(srcTokens: Token[]): Token[] {
   for (let i = 0; i < srcTokens.length; i++) {
     const token = srcTokens[i];
     if (lastDstToken && lastDstToken.type == TokenType.TEXT && token.type == TokenType.TEXT) {
-      lastDstToken.parts[0] ! += token.parts[0];
+      lastDstToken.parts[0]! += token.parts[0];
       lastDstToken.sourceSpan.end = token.sourceSpan.end;
     } else {
       lastDstToken = token;
@@ -849,15 +849,27 @@ class PlainCharacterCursor implements CharacterCursor {
     }
   }
 
-  clone(): PlainCharacterCursor { return new PlainCharacterCursor(this); }
+  clone(): PlainCharacterCursor {
+    return new PlainCharacterCursor(this);
+  }
 
-  peek() { return this.state.peek; }
+  peek() {
-  charsLeft() { return this.end - this.state.offset; }
+    return this.state.peek;
-  diff(other: this) { return this.state.offset - other.state.offset; }
+  }
+  charsLeft() {
+    return this.end - this.state.offset;
+  }
+  diff(other: this) {
+    return this.state.offset - other.state.offset;
+  }
 
-  advance(): void { this.advanceState(this.state); }
+  advance(): void {
+    this.advanceState(this.state);
+  }
 
-  init(): void { this.updatePeek(this.state); }
+  init(): void {
+    this.updatePeek(this.state);
+  }
 
   getSpan(start?: this, leadingTriviaCodePoints?: number[]): ParseSourceSpan {
     start = start || this;
@@ -880,7 +892,9 @@ class PlainCharacterCursor implements CharacterCursor {
     return this.input.substring(start.state.offset, this.state.offset);
   }
 
-  charAt(pos: number): number { return this.input.charCodeAt(pos); }
+  charAt(pos: number): number {
+    return this.input.charCodeAt(pos);
+  }
 
   protected advanceState(state: CursorState) {
     if (state.offset >= this.end) {
@@ -913,7 +927,7 @@ class EscapedCharacterCursor extends PlainCharacterCursor {
       super(fileOrCursor);
       this.internalState = {...fileOrCursor.internalState};
     } else {
-      super(fileOrCursor, range !);
+      super(fileOrCursor, range!);
       this.internalState = this.state;
     }
   }
@@ -929,7 +943,9 @@ class EscapedCharacterCursor extends PlainCharacterCursor {
     this.processEscapeSequence();
   }
 
-  clone(): EscapedCharacterCursor { return new EscapedCharacterCursor(this); }
+  clone(): EscapedCharacterCursor {
+    return new EscapedCharacterCursor(this);
+  }
 
   getChars(start: this): string {
     const cursor = start.clone();

packages/compiler/src/ml_parser/parser.ts

@@ -10,7 +10,7 @@ import {ParseError, ParseSourceSpan} from '../parse_util';
 
 import * as html from './ast';
 import * as lex from './lexer';
-import {TagDefinition, getNsPrefix, isNgContainer, mergeNsAndName} from './tags';
+import {getNsPrefix, isNgContainer, mergeNsAndName, TagDefinition} from './tags';
 
 export class TreeError extends ParseError {
   static create(elementName: string|null, span: ParseSourceSpan, msg: string): TreeError {
@@ -43,7 +43,7 @@ export class Parser {
 class _TreeBuilder {
   private _index: number = -1;
   // TODO(issue/24571): remove '!'.
-  private _peek !: lex.Token;
+  private _peek!: lex.Token;
 
   private _rootNodes: html.Node[] = [];
   private _errors: TreeError[] = [];
@@ -283,7 +283,7 @@ class _TreeBuilder {
         endTagToken.parts[0], endTagToken.parts[1], this._getParentElement());
 
     if (this._getParentElement()) {
-      this._getParentElement() !.endSourceSpan = endTagToken.sourceSpan;
+      this._getParentElement()!.endSourceSpan = endTagToken.sourceSpan;
     }
 
     if (this.getTagDefinition(fullName).isVoid) {
@@ -291,8 +291,8 @@ class _TreeBuilder {
           fullName, endTagToken.sourceSpan,
           `Void elements do not have end tags "${endTagToken.parts[1]}"`));
     } else if (!this._popElement(fullName)) {
-      const errMsg =
+      const errMsg = `Unexpected closing tag "${
-          `Unexpected closing tag "${fullName}". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags`;
+          fullName}". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags`;
       this._errors.push(TreeError.create(fullName, endTagToken.sourceSpan, errMsg));
     }
   }
@@ -316,7 +316,7 @@ class _TreeBuilder {
     const fullName = mergeNsAndName(attrName.parts[0], attrName.parts[1]);
     let end = attrName.sourceSpan.end;
     let value = '';
-    let valueSpan: ParseSourceSpan = undefined !;
+    let valueSpan: ParseSourceSpan = undefined!;
     if (this._peek.type === lex.TokenType.ATTR_QUOTE) {
       this._advance();
     }
@@ -344,7 +344,7 @@ class _TreeBuilder {
    * `<ng-container>` elements are skipped as they are not rendered as DOM element.
    */
   private _getParentElementSkippingContainers():
-      {parent: html.Element | null, container: html.Element|null} {
+      {parent: html.Element|null, container: html.Element|null} {
     let container: html.Element|null = null;
 
     for (let i = this._elementStack.length - 1; i >= 0; i--) {

packages/compiler/src/ml_parser/tags.ts

@@ -23,7 +23,7 @@ export interface TagDefinition {
   isClosedByChild(name: string): boolean;
 }
 
-export function splitNsName(elementName: string): [string | null, string] {
+export function splitNsName(elementName: string): [string|null, string] {
   if (elementName[0] != ':') {
     return [null, elementName];
   }
@@ -54,7 +54,7 @@ export function isNgTemplate(tagName: string): boolean {
 
 export function getNsPrefix(fullName: string): string;
 export function getNsPrefix(fullName: null): null;
-export function getNsPrefix(fullName: string | null): string|null {
+export function getNsPrefix(fullName: string|null): string|null {
   return fullName === null ? null : splitNsName(fullName)[0];
 }
 

packages/compiler/src/ml_parser/xml_parser.ts

@@ -7,13 +7,15 @@
  */
 
 import {TokenizeOptions} from './lexer';
-import {ParseTreeResult, Parser} from './parser';
+import {Parser, ParseTreeResult} from './parser';
 import {getXmlTagDefinition} from './xml_tags';
 
 export {ParseTreeResult, TreeError} from './parser';
 
 export class XmlParser extends Parser {
-  constructor() { super(getXmlTagDefinition); }
+  constructor() {
+    super(getXmlTagDefinition);
+  }
 
   parse(source: string, url: string, options?: TokenizeOptions): ParseTreeResult {
     return super.parse(source, url, options);

packages/compiler/src/ml_parser/xml_tags.ts

@@ -11,19 +11,23 @@ import {TagContentType, TagDefinition} from './tags';
 export class XmlTagDefinition implements TagDefinition {
   closedByParent: boolean = false;
   // TODO(issue/24571): remove '!'.
-  requiredParents !: {[key: string]: boolean};
+  requiredParents!: {[key: string]: boolean};
   // TODO(issue/24571): remove '!'.
-  parentToAdd !: string;
+  parentToAdd!: string;
   // TODO(issue/24571): remove '!'.
-  implicitNamespacePrefix !: string;
+  implicitNamespacePrefix!: string;
   contentType: TagContentType = TagContentType.PARSABLE_DATA;
   isVoid: boolean = false;
   ignoreFirstLf: boolean = false;
   canSelfClose: boolean = true;
 
-  requireExtraParent(currentParent: string): boolean { return false; }
+  requireExtraParent(currentParent: string): boolean {
+    return false;
+  }
 
-  isClosedByChild(name: string): boolean { return false; }
+  isClosedByChild(name: string): boolean {
+    return false;
+  }
 }
 
 const _TAG_DEFINITION = new XmlTagDefinition();

packages/compiler/src/ng_module_compiler.ts

@@ -43,8 +43,8 @@ export class NgModuleCompiler {
             });
 
     const ngModuleDef = o.importExpr(Identifiers.moduleDef).callFn([o.literalArr(providerDefs)]);
-    const ngModuleDefFactory = o.fn(
+    const ngModuleDefFactory =
-        [new o.FnParam(LOG_VAR.name !)], [new o.ReturnStatement(ngModuleDef)], o.INFERRED_TYPE);
+        o.fn([new o.FnParam(LOG_VAR.name!)], [new o.ReturnStatement(ngModuleDef)], o.INFERRED_TYPE);
 
     const ngModuleFactoryVar = `${identifierName(ngModuleMeta.type)}NgFactory`;
     this._createNgModuleFactory(
@@ -77,7 +77,7 @@ export class NgModuleCompiler {
             .set(value)
             .toDeclStmt(
                 o.importType(
-                    Identifiers.NgModuleFactory, [o.expressionType(ctx.importExpr(reference)) !],
+                    Identifiers.NgModuleFactory, [o.expressionType(ctx.importExpr(reference))!],
                     [o.TypeModifier.Const]),
                 [o.StmtModifier.Final, o.StmtModifier.Exported]);
 

packages/compiler/src/ng_module_resolver.ts

@@ -7,7 +7,7 @@
  */
 
 import {CompileReflector} from './compile_reflector';
-import {NgModule, Type, createNgModule} from './core';
+import {createNgModule, NgModule, Type} from './core';
 import {findLast} from './directive_resolver';
 import {stringify} from './util';
 
@@ -18,7 +18,9 @@ import {stringify} from './util';
 export class NgModuleResolver {
   constructor(private _reflector: CompileReflector) {}
 
-  isNgModule(type: any) { return this._reflector.annotations(type).some(createNgModule.isTypeOf); }
+  isNgModule(type: any) {
+    return this._reflector.annotations(type).some(createNgModule.isTypeOf);
+  }
 
   resolve(type: Type, throwIfNotFound = true): NgModule|null {
     const ngModuleMeta: NgModule =

packages/compiler/src/output/abstract_emitter.ts

@@ -28,31 +28,39 @@ class _EmittedLine {
 }
 
 export class EmitterVisitorContext {
-  static createRoot(): EmitterVisitorContext { return new EmitterVisitorContext(0); }
+  static createRoot(): EmitterVisitorContext {
+    return new EmitterVisitorContext(0);
+  }
 
   private _lines: _EmittedLine[];
   private _classes: o.ClassStmt[] = [];
   private _preambleLineCount = 0;
 
-  constructor(private _indent: number) { this._lines = [new _EmittedLine(_indent)]; }
+  constructor(private _indent: number) {
+    this._lines = [new _EmittedLine(_indent)];
+  }
 
   /**
    * @internal strip this from published d.ts files due to
    * https://github.com/microsoft/TypeScript/issues/36216
    */
-  private get _currentLine(): _EmittedLine { return this._lines[this._lines.length - 1]; }
+  private get _currentLine(): _EmittedLine {
+    return this._lines[this._lines.length - 1];
+  }
 
-  println(from?: {sourceSpan: ParseSourceSpan | null}|null, lastPart: string = ''): void {
+  println(from?: {sourceSpan: ParseSourceSpan|null}|null, lastPart: string = ''): void {
     this.print(from || null, lastPart, true);
   }
 
-  lineIsEmpty(): boolean { return this._currentLine.parts.length === 0; }
+  lineIsEmpty(): boolean {
+    return this._currentLine.parts.length === 0;
+  }
 
   lineLength(): number {
     return this._currentLine.indent * _INDENT_WITH.length + this._currentLine.partsLength;
   }
 
-  print(from: {sourceSpan: ParseSourceSpan | null}|null, part: string, newLine: boolean = false) {
+  print(from: {sourceSpan: ParseSourceSpan|null}|null, part: string, newLine: boolean = false) {
     if (part.length > 0) {
       this._currentLine.parts.push(part);
       this._currentLine.partsLength += part.length;
@@ -83,9 +91,13 @@ export class EmitterVisitorContext {
     }
   }
 
-  pushClass(clazz: o.ClassStmt) { this._classes.push(clazz); }
+  pushClass(clazz: o.ClassStmt) {
+    this._classes.push(clazz);
+  }
 
-  popClass(): o.ClassStmt { return this._classes.pop() !; }
+  popClass(): o.ClassStmt {
+    return this._classes.pop()!;
+  }
 
   get currentClass(): o.ClassStmt|null {
     return this._classes.length > 0 ? this._classes[this._classes.length - 1] : null;
@@ -135,7 +147,7 @@ export class EmitterVisitorContext {
       }
 
       while (spanIdx < spans.length) {
-        const span = spans[spanIdx] !;
+        const span = spans[spanIdx]!;
         const source = span.start.file;
         const sourceLine = span.start.line;
         const sourceCol = span.start.col;
@@ -156,7 +168,9 @@ export class EmitterVisitorContext {
     return map;
   }
 
-  setPreambleLineCount(count: number) { return this._preambleLineCount = count; }
+  setPreambleLineCount(count: number) {
+    return this._preambleLineCount = count;
+  }
 
   spanOf(line: number, column: number): ParseSourceSpan|null {
     const emittedLine = this._lines[line - this._preambleLineCount];
@@ -243,7 +257,9 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
     if (stmt.multiline) {
       ctx.println(stmt, `/* ${stmt.comment} */`);
     } else {
-      stmt.comment.split('\n').forEach((line) => { ctx.println(stmt, `// ${line}`); });
+      stmt.comment.split('\n').forEach((line) => {
+        ctx.println(stmt, `// ${line}`);
+      });
     }
     return null;
   }
@@ -327,7 +343,7 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
     expr.expr.visitExpression(this, ctx);
   }
   visitReadVarExpr(ast: o.ReadVarExpr, ctx: EmitterVisitorContext): any {
-    let varName = ast.name !;
+    let varName = ast.name!;
     if (ast.builtin != null) {
       switch (ast.builtin) {
         case o.BuiltinVar.Super:
@@ -337,10 +353,10 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
           varName = 'this';
           break;
         case o.BuiltinVar.CatchError:
-          varName = CATCH_ERROR_VAR.name !;
+          varName = CATCH_ERROR_VAR.name!;
           break;
         case o.BuiltinVar.CatchStack:
-          varName = CATCH_STACK_VAR.name !;
+          varName = CATCH_STACK_VAR.name!;
           break;
         default:
           throw new Error(`Unknown builtin variable ${ast.builtin}`);
@@ -388,7 +404,7 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
     ctx.print(ast, '? ');
     ast.trueCase.visitExpression(this, ctx);
     ctx.print(ast, ': ');
-    ast.falseCase !.visitExpression(this, ctx);
+    ast.falseCase!.visitExpression(this, ctx);
     ctx.print(ast, `)`);
     return null;
   }

packages/compiler/src/output/abstract_js_emitter.ts

@@ -11,7 +11,9 @@ import {AbstractEmitterVisitor, CATCH_ERROR_VAR, CATCH_STACK_VAR, EmitterVisitor
 import * as o from './output_ast';
 
 export abstract class AbstractJsEmitterVisitor extends AbstractEmitterVisitor {
-  constructor() { super(false); }
+  constructor() {
+    super(false);
+  }
   visitDeclareClassStmt(stmt: o.ClassStmt, ctx: EmitterVisitorContext): any {
     ctx.pushClass(stmt);
     this._visitClassConstructor(stmt, ctx);
@@ -101,7 +103,7 @@ export abstract class AbstractJsEmitterVisitor extends AbstractEmitterVisitor {
   visitInvokeFunctionExpr(expr: o.InvokeFunctionExpr, ctx: EmitterVisitorContext): string|null {
     const fnExpr = expr.fn;
     if (fnExpr instanceof o.ReadVarExpr && fnExpr.builtin === o.BuiltinVar.Super) {
-      ctx.currentClass !.parent !.visitExpression(this, ctx);
+      ctx.currentClass!.parent!.visitExpression(this, ctx);
       ctx.print(expr, `.call(this`);
       if (expr.args.length > 0) {
         ctx.print(expr, `, `);

packages/compiler/src/output/js_emitter.ts

@@ -51,7 +51,7 @@ class JsEmitterVisitor extends AbstractJsEmitterVisitor {
       }
       ctx.print(ast, `${prefix}.`);
     }
-    ctx.print(ast, name !);
+    ctx.print(ast, name!);
     return null;
   }
   visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: EmitterVisitorContext): any {

packages/compiler/src/output/output_ast.ts

@@ -24,7 +24,9 @@ export abstract class Type {
   }
   abstract visitType(visitor: TypeVisitor, context: any): any;
 
-  hasModifier(modifier: TypeModifier): boolean { return this.modifiers !.indexOf(modifier) !== -1; }
+  hasModifier(modifier: TypeModifier): boolean {
+    return this.modifiers!.indexOf(modifier) !== -1;
+  }
 }
 
 export enum BuiltinTypeName {
@@ -60,7 +62,9 @@ export class ExpressionType extends Type {
 
 
 export class ArrayType extends Type {
-  constructor(public of : Type, modifiers: TypeModifier[]|null = null) { super(modifiers); }
+  constructor(public of: Type, modifiers: TypeModifier[]|null = null) {
+    super(modifiers);
+  }
   visitType(visitor: TypeVisitor, context: any): any {
     return visitor.visitArrayType(this, context);
   }
@@ -73,7 +77,9 @@ export class MapType extends Type {
     super(modifiers);
     this.valueType = valueType || null;
   }
-  visitType(visitor: TypeVisitor, context: any): any { return visitor.visitMapType(this, context); }
+  visitType(visitor: TypeVisitor, context: any): any {
+    return visitor.visitMapType(this, context);
+  }
 }
 
 export const DYNAMIC_TYPE = new BuiltinType(BuiltinTypeName.Dynamic);
@@ -113,15 +119,15 @@ export enum BinaryOperator {
   BiggerEquals
 }
 
-export function nullSafeIsEquivalent<T extends{isEquivalent(other: T): boolean}>(
+export function nullSafeIsEquivalent<T extends {isEquivalent(other: T): boolean}>(
-    base: T | null, other: T | null) {
+    base: T|null, other: T|null) {
   if (base == null || other == null) {
     return base == other;
   }
   return base.isEquivalent(other);
 }
 
-export function areAllEquivalent<T extends{isEquivalent(other: T): boolean}>(
+export function areAllEquivalent<T extends {isEquivalent(other: T): boolean}>(
     base: T[], other: T[]) {
   const len = base.length;
   if (len !== other.length) {
@@ -243,7 +249,9 @@ export abstract class Expression {
     return new CastExpr(this, type, sourceSpan);
   }
 
-  toStmt(): Statement { return new ExpressionStatement(this, null); }
+  toStmt(): Statement {
+    return new ExpressionStatement(this, null);
+  }
 }
 
 export enum BuiltinVar {
@@ -272,7 +280,9 @@ export class ReadVarExpr extends Expression {
     return e instanceof ReadVarExpr && this.name === e.name && this.builtin === e.builtin;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitReadVarExpr(this, context);
@@ -299,7 +309,9 @@ export class TypeofExpr extends Expression {
     return e instanceof TypeofExpr && e.expr.isEquivalent(this.expr);
   }
 
-  isConstant(): boolean { return this.expr.isConstant(); }
+  isConstant(): boolean {
+    return this.expr.isConstant();
+  }
 }
 
 export class WrappedNodeExpr<T> extends Expression {
@@ -311,7 +323,9 @@ export class WrappedNodeExpr<T> extends Expression {
     return e instanceof WrappedNodeExpr && this.node === e.node;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitWrappedNodeExpr(this, context);
@@ -330,7 +344,9 @@ export class WriteVarExpr extends Expression {
     return e instanceof WriteVarExpr && this.name === e.name && this.value.isEquivalent(e.value);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitWriteVarExpr(this, context);
@@ -340,7 +356,9 @@ export class WriteVarExpr extends Expression {
     return new DeclareVarStmt(this.name, this.value, type, modifiers, this.sourceSpan);
   }
 
-  toConstDecl(): DeclareVarStmt { return this.toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]); }
+  toConstDecl(): DeclareVarStmt {
+    return this.toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]);
+  }
 }
 
 
@@ -358,7 +376,9 @@ export class WriteKeyExpr extends Expression {
         this.index.isEquivalent(e.index) && this.value.isEquivalent(e.value);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitWriteKeyExpr(this, context);
@@ -380,7 +400,9 @@ export class WritePropExpr extends Expression {
         this.name === e.name && this.value.isEquivalent(e.value);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitWritePropExpr(this, context);
@@ -414,7 +436,9 @@ export class InvokeMethodExpr extends Expression {
         this.name === e.name && this.builtin === e.builtin && areAllEquivalent(this.args, e.args);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitInvokeMethodExpr(this, context);
@@ -434,7 +458,9 @@ export class InvokeFunctionExpr extends Expression {
         areAllEquivalent(this.args, e.args) && this.pure === e.pure;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitInvokeFunctionExpr(this, context);
@@ -454,7 +480,9 @@ export class InstantiateExpr extends Expression {
         areAllEquivalent(this.args, e.args);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitInstantiateExpr(this, context);
@@ -473,7 +501,9 @@ export class LiteralExpr extends Expression {
     return e instanceof LiteralExpr && this.value === e.value;
   }
 
-  isConstant() { return true; }
+  isConstant() {
+    return true;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitLiteralExpr(this, context);
@@ -494,7 +524,9 @@ export class LocalizedString extends Expression {
     return false;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitLocalizedString(this, context);
@@ -521,8 +553,9 @@ export class LocalizedString extends Expression {
       metaBlock = `${metaBlock}${ID_SEPARATOR}${this.metaBlock.customId}`;
     }
     if (this.metaBlock.legacyIds) {
-      this.metaBlock.legacyIds.forEach(
+      this.metaBlock.legacyIds.forEach(legacyId => {
-          legacyId => { metaBlock = `${metaBlock}${LEGACY_ID_INDICATOR}${legacyId}`; });
+        metaBlock = `${metaBlock}${LEGACY_ID_INDICATOR}${legacyId}`;
+      });
     }
     return createCookedRawString(metaBlock, this.messageParts[0]);
   }
@@ -588,7 +621,9 @@ export class ExternalExpr extends Expression {
         this.value.moduleName === e.value.moduleName && this.value.runtime === e.value.runtime;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitExternalExpr(this, context);
@@ -616,7 +651,9 @@ export class ConditionalExpr extends Expression {
         this.trueCase.isEquivalent(e.trueCase) && nullSafeIsEquivalent(this.falseCase, e.falseCase);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitConditionalExpr(this, context);
@@ -633,7 +670,9 @@ export class NotExpr extends Expression {
     return e instanceof NotExpr && this.condition.isEquivalent(e.condition);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitNotExpr(this, context);
@@ -649,7 +688,9 @@ export class AssertNotNull extends Expression {
     return e instanceof AssertNotNull && this.condition.isEquivalent(e.condition);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitAssertNotNullExpr(this, context);
@@ -665,7 +706,9 @@ export class CastExpr extends Expression {
     return e instanceof CastExpr && this.value.isEquivalent(e.value);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitCastExpr(this, context);
@@ -676,7 +719,9 @@ export class CastExpr extends Expression {
 export class FnParam {
   constructor(public name: string, public type: Type|null = null) {}
 
-  isEquivalent(param: FnParam): boolean { return this.name === param.name; }
+  isEquivalent(param: FnParam): boolean {
+    return this.name === param.name;
+  }
 }
 
 
@@ -692,7 +737,9 @@ export class FunctionExpr extends Expression {
         areAllEquivalent(this.statements, e.statements);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitFunctionExpr(this, context);
@@ -719,7 +766,9 @@ export class BinaryOperatorExpr extends Expression {
         this.lhs.isEquivalent(e.lhs) && this.rhs.isEquivalent(e.rhs);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitBinaryOperatorExpr(this, context);
@@ -739,7 +788,9 @@ export class ReadPropExpr extends Expression {
         this.name === e.name;
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitReadPropExpr(this, context);
@@ -763,7 +814,9 @@ export class ReadKeyExpr extends Expression {
         this.index.isEquivalent(e.index);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitReadKeyExpr(this, context);
@@ -782,7 +835,9 @@ export class LiteralArrayExpr extends Expression {
     this.entries = entries;
   }
 
-  isConstant() { return this.entries.every(e => e.isConstant()); }
+  isConstant() {
+    return this.entries.every(e => e.isConstant());
+  }
 
   isEquivalent(e: Expression): boolean {
     return e instanceof LiteralArrayExpr && areAllEquivalent(this.entries, e.entries);
@@ -813,7 +868,9 @@ export class LiteralMapExpr extends Expression {
     return e instanceof LiteralMapExpr && areAllEquivalent(this.entries, e.entries);
   }
 
-  isConstant() { return this.entries.every(e => e.value.isConstant()); }
+  isConstant() {
+    return this.entries.every(e => e.value.isConstant());
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitLiteralMapExpr(this, context);
@@ -829,7 +886,9 @@ export class CommaExpr extends Expression {
     return e instanceof CommaExpr && areAllEquivalent(this.parts, e.parts);
   }
 
-  isConstant() { return false; }
+  isConstant() {
+    return false;
+  }
 
   visitExpression(visitor: ExpressionVisitor, context: any): any {
     return visitor.visitCommaExpr(this, context);
@@ -892,7 +951,9 @@ export abstract class Statement {
 
   abstract visitStatement(visitor: StatementVisitor, context: any): any;
 
-  hasModifier(modifier: StmtModifier): boolean { return this.modifiers !.indexOf(modifier) !== -1; }
+  hasModifier(modifier: StmtModifier): boolean {
+    return this.modifiers!.indexOf(modifier) !== -1;
+  }
 }
 
 
@@ -965,7 +1026,9 @@ export class AbstractClassPart {
     }
     this.type = type || null;
   }
-  hasModifier(modifier: StmtModifier): boolean { return this.modifiers !.indexOf(modifier) !== -1; }
+  hasModifier(modifier: StmtModifier): boolean {
+    return this.modifiers!.indexOf(modifier) !== -1;
+  }
 }
 
 export class ClassField extends AbstractClassPart {
@@ -974,7 +1037,9 @@ export class ClassField extends AbstractClassPart {
       public initializer?: Expression) {
     super(type, modifiers);
   }
-  isEquivalent(f: ClassField) { return this.name === f.name; }
+  isEquivalent(f: ClassField) {
+    return this.name === f.name;
+  }
 }
 
 
@@ -1044,7 +1109,9 @@ export class CommentStmt extends Statement {
   constructor(public comment: string, public multiline = false, sourceSpan?: ParseSourceSpan|null) {
     super(null, sourceSpan);
   }
-  isEquivalent(stmt: Statement): boolean { return stmt instanceof CommentStmt; }
+  isEquivalent(stmt: Statement): boolean {
+    return stmt instanceof CommentStmt;
+  }
   visitStatement(visitor: StatementVisitor, context: any): any {
     return visitor.visitCommentStmt(this, context);
   }
@@ -1060,7 +1127,9 @@ export class JSDocCommentStmt extends Statement {
   visitStatement(visitor: StatementVisitor, context: any): any {
     return visitor.visitJSDocCommentStmt(this, context);
   }
-  toString(): string { return serializeTags(this.tags); }
+  toString(): string {
+    return serializeTags(this.tags);
+  }
 }
 
 export class TryCatchStmt extends Statement {
@@ -1105,11 +1174,17 @@ export interface StatementVisitor {
 }
 
 export class AstTransformer implements StatementVisitor, ExpressionVisitor {
-  transformExpr(expr: Expression, context: any): Expression { return expr; }
+  transformExpr(expr: Expression, context: any): Expression {
+    return expr;
+  }
 
-  transformStmt(stmt: Statement, context: any): Statement { return stmt; }
+  transformStmt(stmt: Statement, context: any): Statement {
+    return stmt;
+  }
 
-  visitReadVarExpr(ast: ReadVarExpr, context: any): any { return this.transformExpr(ast, context); }
+  visitReadVarExpr(ast: ReadVarExpr, context: any): any {
+    return this.transformExpr(ast, context);
+  }
 
   visitWrappedNodeExpr(ast: WrappedNodeExpr<any>, context: any): any {
     return this.transformExpr(ast, context);
@@ -1148,7 +1223,7 @@ export class AstTransformer implements StatementVisitor, ExpressionVisitor {
     const method = ast.builtin || ast.name;
     return this.transformExpr(
         new InvokeMethodExpr(
-            ast.receiver.visitExpression(this, context), method !,
+            ast.receiver.visitExpression(this, context), method!,
             this.visitAllExpressions(ast.args, context), ast.type, ast.sourceSpan),
         context);
   }
@@ -1169,7 +1244,9 @@ export class AstTransformer implements StatementVisitor, ExpressionVisitor {
         context);
   }
 
-  visitLiteralExpr(ast: LiteralExpr, context: any): any { return this.transformExpr(ast, context); }
+  visitLiteralExpr(ast: LiteralExpr, context: any): any {
+    return this.transformExpr(ast, context);
+  }
 
   visitLocalizedString(ast: LocalizedString, context: any): any {
     return this.transformExpr(
@@ -1188,7 +1265,7 @@ export class AstTransformer implements StatementVisitor, ExpressionVisitor {
         new ConditionalExpr(
             ast.condition.visitExpression(this, context),
             ast.trueCase.visitExpression(this, context),
-            ast.falseCase !.visitExpression(this, context), ast.type, ast.sourceSpan),
+            ast.falseCase!.visitExpression(this, context), ast.type, ast.sourceSpan),
         context);
   }
 
@@ -1284,7 +1361,7 @@ export class AstTransformer implements StatementVisitor, ExpressionVisitor {
   }
 
   visitDeclareClassStmt(stmt: ClassStmt, context: any): any {
-    const parent = stmt.parent !.visitExpression(this, context);
+    const parent = stmt.parent!.visitExpression(this, context);
     const getters = stmt.getters.map(
         getter => new ClassGetter(
             getter.name, this.visitAllStatements(getter.body, context), getter.type,
@@ -1341,14 +1418,18 @@ export class AstTransformer implements StatementVisitor, ExpressionVisitor {
 
 
 export class RecursiveAstVisitor implements StatementVisitor, ExpressionVisitor {
-  visitType(ast: Type, context: any): any { return ast; }
+  visitType(ast: Type, context: any): any {
+    return ast;
+  }
   visitExpression(ast: Expression, context: any): any {
     if (ast.type) {
       ast.type.visitType(this, context);
     }
     return ast;
   }
-  visitBuiltinType(type: BuiltinType, context: any): any { return this.visitType(type, context); }
+  visitBuiltinType(type: BuiltinType, context: any): any {
+    return this.visitType(type, context);
+  }
   visitExpressionType(type: ExpressionType, context: any): any {
     type.value.visitExpression(this, context);
     if (type.typeParams !== null) {
@@ -1356,10 +1437,18 @@ export class RecursiveAstVisitor implements StatementVisitor, ExpressionVisitor
     }
     return this.visitType(type, context);
   }
-  visitArrayType(type: ArrayType, context: any): any { return this.visitType(type, context); }
+  visitArrayType(type: ArrayType, context: any): any {
-  visitMapType(type: MapType, context: any): any { return this.visitType(type, context); }
+    return this.visitType(type, context);
-  visitWrappedNodeExpr(ast: WrappedNodeExpr<any>, context: any): any { return ast; }
+  }
-  visitTypeofExpr(ast: TypeofExpr, context: any): any { return this.visitExpression(ast, context); }
+  visitMapType(type: MapType, context: any): any {
+    return this.visitType(type, context);
+  }
+  visitWrappedNodeExpr(ast: WrappedNodeExpr<any>, context: any): any {
+    return ast;
+  }
+  visitTypeofExpr(ast: TypeofExpr, context: any): any {
+    return this.visitExpression(ast, context);
+  }
   visitReadVarExpr(ast: ReadVarExpr, context: any): any {
     return this.visitExpression(ast, context);
   }
@@ -1408,7 +1497,7 @@ export class RecursiveAstVisitor implements StatementVisitor, ExpressionVisitor
   visitConditionalExpr(ast: ConditionalExpr, context: any): any {
     ast.condition.visitExpression(this, context);
     ast.trueCase.visitExpression(this, context);
-    ast.falseCase !.visitExpression(this, context);
+    ast.falseCase!.visitExpression(this, context);
     return this.visitExpression(ast, context);
   }
   visitNotExpr(ast: NotExpr, context: any): any {
@@ -1482,7 +1571,7 @@ export class RecursiveAstVisitor implements StatementVisitor, ExpressionVisitor
     return stmt;
   }
   visitDeclareClassStmt(stmt: ClassStmt, context: any): any {
-    stmt.parent !.visitExpression(this, context);
+    stmt.parent!.visitExpression(this, context);
     stmt.getters.forEach(getter => this.visitAllStatements(getter.body, context));
     if (stmt.constructorMethod) {
       this.visitAllStatements(stmt.constructorMethod.body, context);
@@ -1505,8 +1594,12 @@ export class RecursiveAstVisitor implements StatementVisitor, ExpressionVisitor
     stmt.error.visitExpression(this, context);
     return stmt;
   }
-  visitCommentStmt(stmt: CommentStmt, context: any): any { return stmt; }
+  visitCommentStmt(stmt: CommentStmt, context: any): any {
-  visitJSDocCommentStmt(stmt: JSDocCommentStmt, context: any): any { return stmt; }
+    return stmt;
+  }
+  visitJSDocCommentStmt(stmt: JSDocCommentStmt, context: any): any {
+    return stmt;
+  }
   visitAllStatements(stmts: Statement[], context: any): void {
     stmts.forEach(stmt => stmt.visitStatement(this, context));
   }
@@ -1551,7 +1644,7 @@ class _FindExternalReferencesVisitor extends RecursiveAstVisitor {
 }
 
 export function applySourceSpanToStatementIfNeeded(
-    stmt: Statement, sourceSpan: ParseSourceSpan | null): Statement {
+    stmt: Statement, sourceSpan: ParseSourceSpan|null): Statement {
   if (!sourceSpan) {
     return stmt;
   }
@@ -1560,7 +1653,7 @@ export function applySourceSpanToStatementIfNeeded(
 }
 
 export function applySourceSpanToExpressionIfNeeded(
-    expr: Expression, sourceSpan: ParseSourceSpan | null): Expression {
+    expr: Expression, sourceSpan: ParseSourceSpan|null): Expression {
   if (!sourceSpan) {
     return expr;
   }
@@ -1569,7 +1662,9 @@ export function applySourceSpanToExpressionIfNeeded(
 }
 
 class _ApplySourceSpanTransformer extends AstTransformer {
-  constructor(private sourceSpan: ParseSourceSpan) { super(); }
+  constructor(private sourceSpan: ParseSourceSpan) {
+    super();
+  }
   private _clone(obj: any): any {
     const clone = Object.create(obj.constructor.prototype);
     for (let prop of Object.keys(obj)) {
@@ -1596,25 +1691,25 @@ class _ApplySourceSpanTransformer extends AstTransformer {
 }
 
 export function variable(
-    name: string, type?: Type | null, sourceSpan?: ParseSourceSpan | null): ReadVarExpr {
+    name: string, type?: Type|null, sourceSpan?: ParseSourceSpan|null): ReadVarExpr {
   return new ReadVarExpr(name, type, sourceSpan);
 }
 
 export function importExpr(
-    id: ExternalReference, typeParams: Type[] | null = null,
+    id: ExternalReference, typeParams: Type[]|null = null,
-    sourceSpan?: ParseSourceSpan | null): ExternalExpr {
+    sourceSpan?: ParseSourceSpan|null): ExternalExpr {
   return new ExternalExpr(id, null, typeParams, sourceSpan);
 }
 
 export function importType(
-    id: ExternalReference, typeParams: Type[] | null = null,
+    id: ExternalReference, typeParams: Type[]|null = null,
-    typeModifiers: TypeModifier[] | null = null): ExpressionType|null {
+    typeModifiers: TypeModifier[]|null = null): ExpressionType|null {
   return id != null ? expressionType(importExpr(id, typeParams, null), typeModifiers) : null;
 }
 
 export function expressionType(
-    expr: Expression, typeModifiers: TypeModifier[] | null = null,
+    expr: Expression, typeModifiers: TypeModifier[]|null = null,
-    typeParams: Type[] | null = null): ExpressionType {
+    typeParams: Type[]|null = null): ExpressionType {
   return new ExpressionType(expr, typeModifiers, typeParams);
 }
 
@@ -1623,30 +1718,28 @@ export function typeofExpr(expr: Expression) {
 }
 
 export function literalArr(
-    values: Expression[], type?: Type | null,
+    values: Expression[], type?: Type|null, sourceSpan?: ParseSourceSpan|null): LiteralArrayExpr {
-    sourceSpan?: ParseSourceSpan | null): LiteralArrayExpr {
   return new LiteralArrayExpr(values, type, sourceSpan);
 }
 
 export function literalMap(
     values: {key: string, quoted: boolean, value: Expression}[],
-    type: MapType | null = null): LiteralMapExpr {
+    type: MapType|null = null): LiteralMapExpr {
   return new LiteralMapExpr(
       values.map(e => new LiteralMapEntry(e.key, e.value, e.quoted)), type, null);
 }
 
-export function not(expr: Expression, sourceSpan?: ParseSourceSpan | null): NotExpr {
+export function not(expr: Expression, sourceSpan?: ParseSourceSpan|null): NotExpr {
   return new NotExpr(expr, sourceSpan);
 }
 
-export function assertNotNull(
+export function assertNotNull(expr: Expression, sourceSpan?: ParseSourceSpan|null): AssertNotNull {
-    expr: Expression, sourceSpan?: ParseSourceSpan | null): AssertNotNull {
   return new AssertNotNull(expr, sourceSpan);
 }
 
 export function fn(
-    params: FnParam[], body: Statement[], type?: Type | null, sourceSpan?: ParseSourceSpan | null,
+    params: FnParam[], body: Statement[], type?: Type|null, sourceSpan?: ParseSourceSpan|null,
-    name?: string | null): FunctionExpr {
+    name?: string|null): FunctionExpr {
   return new FunctionExpr(params, body, type, sourceSpan, name);
 }
 
@@ -1655,13 +1748,13 @@ export function ifStmt(condition: Expression, thenClause: Statement[], elseClaus
 }
 
 export function literal(
-    value: any, type?: Type | null, sourceSpan?: ParseSourceSpan | null): LiteralExpr {
+    value: any, type?: Type|null, sourceSpan?: ParseSourceSpan|null): LiteralExpr {
   return new LiteralExpr(value, type, sourceSpan);
 }
 
 export function localizedString(
     metaBlock: I18nMeta, messageParts: string[], placeholderNames: string[],
-    expressions: Expression[], sourceSpan?: ParseSourceSpan | null): LocalizedString {
+    expressions: Expression[], sourceSpan?: ParseSourceSpan|null): LocalizedString {
   return new LocalizedString(metaBlock, messageParts, placeholderNames, expressions, sourceSpan);
 }
 
@@ -1684,13 +1777,12 @@ export const enum JSDocTagName {
  */
 export type JSDocTag = {
   // `tagName` is e.g. "param" in an `@param` declaration
-  tagName: JSDocTagName | string,
+  tagName: JSDocTagName|string,
   // Any remaining text on the tag, e.g. the description
   text?: string,
-} | {
+}|{
   // no `tagName` for plain text documentation that occurs before any `@param` lines
-  tagName?: undefined,
+  tagName?: undefined, text: string,
-  text: string,
 };
 
 /*

packages/compiler/src/output/output_interpreter.ts

@@ -15,7 +15,9 @@ export function interpretStatements(
   const visitor = new StatementInterpreter(reflector);
   visitor.visitAllStatements(statements, ctx);
   const result: {[key: string]: any} = {};
-  ctx.exports.forEach((exportName) => { result[exportName] = ctx.vars.get(exportName); });
+  ctx.exports.forEach((exportName) => {
+    result[exportName] = ctx.vars.get(exportName);
+  });
   return result;
 }
 
@@ -63,7 +65,7 @@ function createDynamicClass(
   _classStmt.methods.forEach(function(method: o.ClassMethod) {
     const paramNames = method.params.map(param => param.name);
     // Note: use `function` instead of arrow function to capture `this`
-    propertyDescriptors[method.name !] = {
+    propertyDescriptors[method.name!] = {
       writable: false,
       configurable: false,
       value: function(...args: any[]) {
@@ -77,7 +79,9 @@ function createDynamicClass(
   // Note: use `function` instead of arrow function to capture `this`
   const ctor = function(this: Object, ...args: any[]) {
     const instanceCtx = new _ExecutionContext(_ctx, this, _classStmt.name, _ctx.vars);
-    _classStmt.fields.forEach((field) => { (this as any)[field.name] = undefined; });
+    _classStmt.fields.forEach((field) => {
+      (this as any)[field.name] = undefined;
+    });
     _executeFunctionStatements(
         ctorParamNames, args, _classStmt.constructorMethod.body, instanceCtx, _visitor);
   };
@@ -88,7 +92,9 @@ function createDynamicClass(
 
 class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
   constructor(private reflector: CompileReflector) {}
-  debugAst(ast: o.Expression|o.Statement|o.Type): string { return debugOutputAstAsTypeScript(ast); }
+  debugAst(ast: o.Expression|o.Statement|o.Type): string {
+    return debugOutputAstAsTypeScript(ast);
+  }
 
   visitDeclareVarStmt(stmt: o.DeclareVarStmt, ctx: _ExecutionContext): any {
     const initialValue = stmt.value ? stmt.value.visitExpression(this, ctx) : undefined;
@@ -106,7 +112,7 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
         currCtx.vars.set(expr.name, value);
         return value;
       }
-      currCtx = currCtx.parent !;
+      currCtx = currCtx.parent!;
     }
     throw new Error(`Not declared variable ${expr.name}`);
   }
@@ -117,7 +123,7 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
     throw new Error('Cannot interpret a TypeofExpr');
   }
   visitReadVarExpr(ast: o.ReadVarExpr, ctx: _ExecutionContext): any {
-    let varName = ast.name !;
+    let varName = ast.name!;
     if (ast.builtin != null) {
       switch (ast.builtin) {
         case o.BuiltinVar.Super:
@@ -139,7 +145,7 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
       if (currCtx.vars.has(varName)) {
         return currCtx.vars.get(varName);
       }
-      currCtx = currCtx.parent !;
+      currCtx = currCtx.parent!;
     }
     throw new Error(`Not declared variable ${varName}`);
   }
@@ -176,7 +182,7 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
           throw new Error(`Unknown builtin method ${expr.builtin}`);
       }
     } else {
-      result = receiver[expr.name !].apply(receiver, args);
+      result = receiver[expr.name!].apply(receiver, args);
     }
     return result;
   }
@@ -184,7 +190,7 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
     const args = this.visitAllExpressions(stmt.args, ctx);
     const fnExpr = stmt.fn;
     if (fnExpr instanceof o.ReadVarExpr && fnExpr.builtin === o.BuiltinVar.Super) {
-      ctx.instance !.constructor.prototype.constructor.apply(ctx.instance, args);
+      ctx.instance!.constructor.prototype.constructor.apply(ctx.instance, args);
       return null;
     } else {
       const fn = stmt.fn.visitExpression(this, ctx);
@@ -227,15 +233,23 @@ class StatementInterpreter implements o.StatementVisitor, o.ExpressionVisitor {
   visitThrowStmt(stmt: o.ThrowStmt, ctx: _ExecutionContext): any {
     throw stmt.error.visitExpression(this, ctx);
   }
-  visitCommentStmt(stmt: o.CommentStmt, context?: any): any { return null; }
+  visitCommentStmt(stmt: o.CommentStmt, context?: any): any {
-  visitJSDocCommentStmt(stmt: o.JSDocCommentStmt, context?: any): any { return null; }
+    return null;
+  }
+  visitJSDocCommentStmt(stmt: o.JSDocCommentStmt, context?: any): any {
+    return null;
+  }
   visitInstantiateExpr(ast: o.InstantiateExpr, ctx: _ExecutionContext): any {
     const args = this.visitAllExpressions(ast.args, ctx);
     const clazz = ast.classExpr.visitExpression(this, ctx);
     return new clazz(...args);
   }
-  visitLiteralExpr(ast: o.LiteralExpr, ctx: _ExecutionContext): any { return ast.value; }
+  visitLiteralExpr(ast: o.LiteralExpr, ctx: _ExecutionContext): any {
-  visitLocalizedString(ast: o.LocalizedString, context: any): any { return null; }
+    return ast.value;
+  }
+  visitLocalizedString(ast: o.LocalizedString, context: any): any {
+    return null;
+  }
   visitExternalExpr(ast: o.ExternalExpr, ctx: _ExecutionContext): any {
     return this.reflector.resolveExternalReference(ast.value);
   }

packages/compiler/src/output/output_jit.ts

@@ -87,7 +87,9 @@ export class JitEvaluator {
    * @param args The arguments to pass to the function being executed.
    * @returns The return value of the executed function.
    */
-  executeFunction(fn: Function, args: any[]) { return fn(...args); }
+  executeFunction(fn: Function, args: any[]) {
+    return fn(...args);
+  }
 }
 
 /**
@@ -98,7 +100,9 @@ export class JitEmitterVisitor extends AbstractJsEmitterVisitor {
   private _evalArgValues: any[] = [];
   private _evalExportedVars: string[] = [];
 
-  constructor(private reflector: CompileReflector) { super(); }
+  constructor(private reflector: CompileReflector) {
+    super();
+  }
 
   createReturnStmt(ctx: EmitterVisitorContext) {
     const stmt = new o.ReturnStatement(new o.LiteralMapExpr(this._evalExportedVars.map(

packages/compiler/src/output/source_map.ts

@@ -25,7 +25,7 @@ export type SourceMap = {
   file?: string,
       sourceRoot: string,
       sources: string[],
-  sourcesContent: (string | null)[],
+      sourcesContent: (string|null)[],
       mappings: string,
 };
 
@@ -78,7 +78,9 @@ export class SourceMapGenerator {
    * @internal strip this from published d.ts files due to
    * https://github.com/microsoft/TypeScript/issues/36216
    */
-  private get currentLine(): Segment[]|null { return this.lines.slice(-1)[0]; }
+  private get currentLine(): Segment[]|null {
+    return this.lines.slice(-1)[0];
+  }
 
   toJSON(): SourceMap|null {
     if (!this.hasMappings) {
@@ -87,7 +89,7 @@ export class SourceMapGenerator {
 
     const sourcesIndex = new Map<string, number>();
     const sources: string[] = [];
-    const sourcesContent: (string | null)[] = [];
+    const sourcesContent: (string|null)[] = [];
 
     Array.from(this.sourcesContent.keys()).forEach((url: string, i: number) => {
       sourcesIndex.set(url, i);
@@ -113,14 +115,14 @@ export class SourceMapGenerator {
                         if (segment.sourceUrl != null) {
                           // zero-based index into the “sources” list
                           segAsStr +=
-                              toBase64VLQ(sourcesIndex.get(segment.sourceUrl) ! - lastSourceIndex);
+                              toBase64VLQ(sourcesIndex.get(segment.sourceUrl)! - lastSourceIndex);
-                          lastSourceIndex = sourcesIndex.get(segment.sourceUrl) !;
+                          lastSourceIndex = sourcesIndex.get(segment.sourceUrl)!;
                           // the zero-based starting line in the original source
-                          segAsStr += toBase64VLQ(segment.sourceLine0 ! - lastSourceLine0);
+                          segAsStr += toBase64VLQ(segment.sourceLine0! - lastSourceLine0);
-                          lastSourceLine0 = segment.sourceLine0 !;
+                          lastSourceLine0 = segment.sourceLine0!;
                           // the zero-based starting column in the original source
-                          segAsStr += toBase64VLQ(segment.sourceCol0 ! - lastSourceCol0);
+                          segAsStr += toBase64VLQ(segment.sourceCol0! - lastSourceCol0);
-                          lastSourceCol0 = segment.sourceCol0 !;
+                          lastSourceCol0 = segment.sourceCol0!;
                         }
 
                         return segAsStr;

packages/compiler/src/output/ts_emitter.ts

@@ -15,8 +15,7 @@ import * as o from './output_ast';
 
 const _debugFilePath = '/debug/lib';
 
-export function debugOutputAstAsTypeScript(ast: o.Statement | o.Expression | o.Type | any[]):
+export function debugOutputAstAsTypeScript(ast: o.Statement|o.Expression|o.Type|any[]): string {
-    string {
   const converter = new _TsEmitterVisitor();
   const ctx = EmitterVisitorContext.createRoot();
   const asts: any[] = Array.isArray(ast) ? ast : [ast];
@@ -147,7 +146,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
           reexports = [];
           this.reexports.set(moduleName, reexports);
         }
-        reexports.push({name: name !, as: stmt.name});
+        reexports.push({name: name!, as: stmt.name});
         return null;
       }
     }
@@ -175,7 +174,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
 
   visitCastExpr(ast: o.CastExpr, ctx: EmitterVisitorContext): any {
     ctx.print(ast, `(<`);
-    ast.type !.visitType(this, ctx);
+    ast.type!.visitType(this, ctx);
     ctx.print(ast, `>`);
     ast.value.visitExpression(this, ctx);
     ctx.print(ast, `)`);
@@ -422,7 +421,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
       }
       ctx.print(null, `${prefix}.`);
     }
-    ctx.print(null, name !);
+    ctx.print(null, name!);
 
     if (this.typeExpression > 0) {
       // If we are in a type expression that refers to a generic type then supply
@@ -433,7 +432,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
       const suppliedParameters = typeParams || [];
       if (suppliedParameters.length > 0) {
         ctx.print(null, `<`);
-        this.visitAllObjects(type => type.visitType(this, ctx), typeParams !, ctx, ',');
+        this.visitAllObjects(type => type.visitType(this, ctx), typeParams!, ctx, ',');
         ctx.print(null, `>`);
       }
     }

packages/compiler/src/output/value_util.ts

@@ -14,7 +14,7 @@ import * as o from './output_ast';
 export const QUOTED_KEYS = '$quoted$';
 
 export function convertValueToOutputAst(
-    ctx: OutputContext, value: any, type: o.Type | null = null): o.Expression {
+    ctx: OutputContext, value: any, type: o.Type|null = null): o.Expression {
   return visitValue(value, new _ValueOutputAstTransformer(ctx), type);
 }
 
@@ -43,7 +43,9 @@ class _ValueOutputAstTransformer implements ValueTransformer {
     return new o.LiteralMapExpr(entries, type);
   }
 
-  visitPrimitive(value: any, type: o.Type): o.Expression { return o.literal(value, type); }
+  visitPrimitive(value: any, type: o.Type): o.Expression {
+    return o.literal(value, type);
+  }
 
   visitOther(value: any, type: o.Type): o.Expression {
     if (value instanceof o.Expression) {

packages/compiler/src/pipe_resolver.ts

@@ -7,7 +7,7 @@
  */
 
 import {CompileReflector} from './compile_reflector';
-import {Pipe, Type, createPipe} from './core';
+import {createPipe, Pipe, Type} from './core';
 import {findLast} from './directive_resolver';
 import {resolveForwardRef, stringify} from './util';
 

packages/compiler/src/provider_analyzer.ts

@@ -9,12 +9,14 @@
 
 import {CompileDiDependencyMetadata, CompileDirectiveMetadata, CompileDirectiveSummary, CompileNgModuleMetadata, CompileProviderMetadata, CompileQueryMetadata, CompileTokenMetadata, CompileTypeMetadata, tokenName, tokenReference} from './compile_metadata';
 import {CompileReflector} from './compile_reflector';
-import {Identifiers, createTokenForExternalReference} from './identifiers';
+import {createTokenForExternalReference, Identifiers} from './identifiers';
 import {ParseError, ParseSourceSpan} from './parse_util';
 import {AttrAst, DirectiveAst, ProviderAst, ProviderAstType, QueryMatch, ReferenceAst} from './template_parser/template_ast';
 
 export class ProviderError extends ParseError {
-  constructor(message: string, span: ParseSourceSpan) { super(span, message); }
+  constructor(message: string, span: ParseSourceSpan) {
+    super(span, message);
+  }
 }
 
 export interface QueryWithId {
@@ -125,7 +127,9 @@ export class ProviderElementContext {
 
   get queryMatches(): QueryMatch[] {
     const allMatches: QueryMatch[] = [];
-    this._queriedTokens.forEach((matches: QueryMatch[]) => { allMatches.push(...matches); });
+    this._queriedTokens.forEach((matches: QueryMatch[]) => {
+      allMatches.push(...matches);
+    });
     return allMatches;
   }
 
@@ -171,7 +175,8 @@ export class ProviderElementContext {
       requestingProviderType: ProviderAstType, token: CompileTokenMetadata,
       eager: boolean): ProviderAst|null {
     const resolvedProvider = this._allProviders.get(tokenReference(token));
-    if (!resolvedProvider || ((requestingProviderType === ProviderAstType.Directive ||
+    if (!resolvedProvider ||
+        ((requestingProviderType === ProviderAstType.Directive ||
           requestingProviderType === ProviderAstType.PublicService) &&
          resolvedProvider.providerType === ProviderAstType.PrivateService) ||
         ((requestingProviderType === ProviderAstType.PrivateService ||
@@ -191,25 +196,25 @@ export class ProviderElementContext {
     this._seenProviders.set(tokenReference(token), true);
     const transformedProviders = resolvedProvider.providers.map((provider) => {
       let transformedUseValue = provider.useValue;
-      let transformedUseExisting = provider.useExisting !;
+      let transformedUseExisting = provider.useExisting!;
-      let transformedDeps: CompileDiDependencyMetadata[] = undefined !;
+      let transformedDeps: CompileDiDependencyMetadata[] = undefined!;
       if (provider.useExisting != null) {
         const existingDiDep = this._getDependency(
-            resolvedProvider.providerType, {token: provider.useExisting}, eager) !;
+            resolvedProvider.providerType, {token: provider.useExisting}, eager)!;
         if (existingDiDep.token != null) {
           transformedUseExisting = existingDiDep.token;
         } else {
-          transformedUseExisting = null !;
+          transformedUseExisting = null!;
           transformedUseValue = existingDiDep.value;
         }
       } else if (provider.useFactory) {
         const deps = provider.deps || provider.useFactory.diDeps;
         transformedDeps =
-            deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager) !);
+            deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager)!);
       } else if (provider.useClass) {
         const deps = provider.deps || provider.useClass.diDeps;
         transformedDeps =
-            deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager) !);
+            deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager)!);
       }
       return _transformProvider(provider, {
         useExisting: transformedUseExisting,
@@ -227,7 +232,7 @@ export class ProviderElementContext {
       requestingProviderType: ProviderAstType, dep: CompileDiDependencyMetadata,
       eager: boolean = false): CompileDiDependencyMetadata|null {
     if (dep.isAttribute) {
-      const attrValue = this._attrs[dep.token !.value];
+      const attrValue = this._attrs[dep.token!.value];
       return {isValue: true, value: attrValue == null ? null : attrValue};
     }
 
@@ -248,7 +253,7 @@ export class ProviderElementContext {
         }
         if (tokenReference(dep.token) ===
             this.viewContext.reflector.resolveExternalReference(Identifiers.ViewContainerRef)) {
-          (this as{transformedHasViewContainer: boolean}).transformedHasViewContainer = true;
+          (this as {transformedHasViewContainer: boolean}).transformedHasViewContainer = true;
         }
       }
       // access the injector
@@ -290,8 +295,8 @@ export class ProviderElementContext {
       // check @Host restriction
       if (!result) {
         if (!dep.isHost || this.viewContext.component.isHost ||
-            this.viewContext.component.type.reference === tokenReference(dep.token !) ||
+            this.viewContext.component.type.reference === tokenReference(dep.token!) ||
-            this.viewContext.viewProviders.get(tokenReference(dep.token !)) != null) {
+            this.viewContext.viewProviders.get(tokenReference(dep.token!)) != null) {
           result = dep;
         } else {
           result = dep.isOptional ? {isValue: true, value: null} : null;
@@ -368,15 +373,15 @@ export class NgModuleProviderAnalyzer {
     this._seenProviders.set(tokenReference(token), true);
     const transformedProviders = resolvedProvider.providers.map((provider) => {
       let transformedUseValue = provider.useValue;
-      let transformedUseExisting = provider.useExisting !;
+      let transformedUseExisting = provider.useExisting!;
-      let transformedDeps: CompileDiDependencyMetadata[] = undefined !;
+      let transformedDeps: CompileDiDependencyMetadata[] = undefined!;
       if (provider.useExisting != null) {
         const existingDiDep =
             this._getDependency({token: provider.useExisting}, eager, resolvedProvider.sourceSpan);
         if (existingDiDep.token != null) {
           transformedUseExisting = existingDiDep.token;
         } else {
-          transformedUseExisting = null !;
+          transformedUseExisting = null!;
           transformedUseValue = existingDiDep.value;
         }
       } else if (provider.useFactory) {
@@ -478,7 +483,8 @@ function _resolveProviders(
     let resolvedProvider = targetProvidersByToken.get(tokenReference(provider.token));
     if (resolvedProvider != null && !!resolvedProvider.multiProvider !== !!provider.multi) {
       targetErrors.push(new ProviderError(
-          `Mixing multi and non multi provider is not possible for token ${tokenName(resolvedProvider.token)}`,
+          `Mixing multi and non multi provider is not possible for token ${
+              tokenName(resolvedProvider.token)}`,
           sourceSpan));
     }
     if (!resolvedProvider) {

packages/compiler/src/render3/r3_ast.ts

@@ -18,19 +18,25 @@ export interface Node {
 
 export class Text implements Node {
   constructor(public value: string, public sourceSpan: ParseSourceSpan) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitText(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitText(this);
+  }
 }
 
 export class BoundText implements Node {
   constructor(public value: AST, public sourceSpan: ParseSourceSpan, public i18n?: I18nMeta) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitBoundText(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitBoundText(this);
+  }
 }
 
 export class TextAttribute implements Node {
   constructor(
       public name: string, public value: string, public sourceSpan: ParseSourceSpan,
       public valueSpan?: ParseSourceSpan, public i18n?: I18nMeta) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitTextAttribute(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitTextAttribute(this);
+  }
 }
 
 export class BoundAttribute implements Node {
@@ -45,7 +51,9 @@ export class BoundAttribute implements Node {
         prop.valueSpan, i18n);
   }
 
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitBoundAttribute(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitBoundAttribute(this);
+  }
 }
 
 export class BoundEvent implements Node {
@@ -62,7 +70,9 @@ export class BoundEvent implements Node {
         event.name, event.type, event.handler, target, phase, event.sourceSpan, event.handlerSpan);
   }
 
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitBoundEvent(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitBoundEvent(this);
+  }
 }
 
 export class Element implements Node {
@@ -76,7 +86,9 @@ export class Element implements Node {
       this.sourceSpan = new ParseSourceSpan(sourceSpan.start, endSourceSpan.end);
     }
   }
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitElement(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitElement(this);
+  }
 }
 
 export class Template implements Node {
@@ -86,36 +98,46 @@ export class Template implements Node {
       public children: Node[], public references: Reference[], public variables: Variable[],
       public sourceSpan: ParseSourceSpan, public startSourceSpan: ParseSourceSpan|null,
       public endSourceSpan: ParseSourceSpan|null, public i18n?: I18nMeta) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitTemplate(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitTemplate(this);
+  }
 }
 
 export class Content implements Node {
   constructor(
       public selector: string, public attributes: TextAttribute[],
       public sourceSpan: ParseSourceSpan, public i18n?: I18nMeta) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitContent(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitContent(this);
+  }
 }
 
 export class Variable implements Node {
   constructor(
       public name: string, public value: string, public sourceSpan: ParseSourceSpan,
       public valueSpan?: ParseSourceSpan) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitVariable(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitVariable(this);
+  }
 }
 
 export class Reference implements Node {
   constructor(
       public name: string, public value: string, public sourceSpan: ParseSourceSpan,
       public valueSpan?: ParseSourceSpan) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitReference(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitReference(this);
+  }
 }
 
 export class Icu implements Node {
   constructor(
       public vars: {[name: string]: BoundText},
-      public placeholders: {[name: string]: Text | BoundText}, public sourceSpan: ParseSourceSpan,
+      public placeholders: {[name: string]: Text|BoundText}, public sourceSpan: ParseSourceSpan,
       public i18n?: I18nMeta) {}
-  visit<Result>(visitor: Visitor<Result>): Result { return visitor.visitIcu(this); }
+  visit<Result>(visitor: Visitor<Result>): Result {
+    return visitor.visitIcu(this);
+  }
 }
 
 export interface Visitor<Result = any> {
@@ -210,16 +232,34 @@ export class TransformVisitor implements Visitor<Node> {
     return template;
   }
 
-  visitContent(content: Content): Node { return content; }
+  visitContent(content: Content): Node {
+    return content;
+  }
 
-  visitVariable(variable: Variable): Node { return variable; }
+  visitVariable(variable: Variable): Node {
-  visitReference(reference: Reference): Node { return reference; }
+    return variable;
-  visitTextAttribute(attribute: TextAttribute): Node { return attribute; }
+  }
-  visitBoundAttribute(attribute: BoundAttribute): Node { return attribute; }
+  visitReference(reference: Reference): Node {
-  visitBoundEvent(attribute: BoundEvent): Node { return attribute; }
+    return reference;
-  visitText(text: Text): Node { return text; }
+  }
-  visitBoundText(text: BoundText): Node { return text; }
+  visitTextAttribute(attribute: TextAttribute): Node {
-  visitIcu(icu: Icu): Node { return icu; }
+    return attribute;
+  }
+  visitBoundAttribute(attribute: BoundAttribute): Node {
+    return attribute;
+  }
+  visitBoundEvent(attribute: BoundEvent): Node {
+    return attribute;
+  }
+  visitText(text: Text): Node {
+    return text;
+  }
+  visitBoundText(text: BoundText): Node {
+    return text;
+  }
+  visitIcu(icu: Icu): Node {
+    return icu;
+  }
 }
 
 export function visitAll<Result>(visitor: Visitor<Result>, nodes: Node[]): Result[] {

packages/compiler/src/render3/r3_factory.ts

@@ -89,8 +89,8 @@ export interface R3ExpressionFactoryMetadata extends R3ConstructorFactoryMetadat
   expression: o.Expression;
 }
 
-export type R3FactoryMetadata = R3ConstructorFactoryMetadata | R3DelegatedFactoryMetadata |
+export type R3FactoryMetadata = R3ConstructorFactoryMetadata|R3DelegatedFactoryMetadata|
-    R3DelegatedFnOrClassMetadata | R3ExpressionFactoryMetadata;
+    R3DelegatedFnOrClassMetadata|R3ExpressionFactoryMetadata;
 
 export enum R3FactoryTarget {
   Directive = 0,
@@ -280,8 +280,7 @@ export function compileFactoryFunction(meta: R3FactoryMetadata): R3FactoryFn {
         `${meta.name}_Factory`),
     statements,
     type: o.expressionType(o.importExpr(
-        R3.FactoryDef,
+        R3.FactoryDef, [typeWithParameters(meta.type.type, meta.typeArgumentCount), ctorDepsType]))
-        [typeWithParameters(meta.type.type, meta.typeArgumentCount), ctorDepsType]))
   };
 }
 
@@ -402,7 +401,8 @@ export function dependenciesFromGlobalMetadata(
       // Construct the dependency.
       deps.push({
         token,
-        attribute: null, resolved,
+        attribute: null,
+        resolved,
         host: !!dependency.isHost,
         optional: !!dependency.isOptional,
         self: !!dependency.isSelf,

packages/compiler/src/render3/r3_jit.ts

@@ -21,28 +21,44 @@ export class R3JitReflector implements CompileReflector {
   resolveExternalReference(ref: o.ExternalReference): any {
     // This reflector only handles @angular/core imports.
     if (ref.moduleName !== '@angular/core') {
-      throw new Error(
+      throw new Error(`Cannot resolve external reference to ${
-          `Cannot resolve external reference to ${ref.moduleName}, only references to @angular/core are supported.`);
+          ref.moduleName}, only references to @angular/core are supported.`);
     }
-    if (!this.context.hasOwnProperty(ref.name !)) {
+    if (!this.context.hasOwnProperty(ref.name!)) {
       throw new Error(`No value provided for @angular/core symbol '${ref.name!}'.`);
     }
-    return this.context[ref.name !];
+    return this.context[ref.name!];
   }
 
-  parameters(typeOrFunc: any): any[][] { throw new Error('Not implemented.'); }
+  parameters(typeOrFunc: any): any[][] {
+    throw new Error('Not implemented.');
+  }
 
-  annotations(typeOrFunc: any): any[] { throw new Error('Not implemented.'); }
+  annotations(typeOrFunc: any): any[] {
+    throw new Error('Not implemented.');
+  }
 
-  shallowAnnotations(typeOrFunc: any): any[] { throw new Error('Not implemented.'); }
+  shallowAnnotations(typeOrFunc: any): any[] {
+    throw new Error('Not implemented.');
+  }
 
-  tryAnnotations(typeOrFunc: any): any[] { throw new Error('Not implemented.'); }
+  tryAnnotations(typeOrFunc: any): any[] {
+    throw new Error('Not implemented.');
+  }
 
-  propMetadata(typeOrFunc: any): {[key: string]: any[];} { throw new Error('Not implemented.'); }
+  propMetadata(typeOrFunc: any): {[key: string]: any[];} {
+    throw new Error('Not implemented.');
+  }
 
-  hasLifecycleHook(type: any, lcProperty: string): boolean { throw new Error('Not implemented.'); }
+  hasLifecycleHook(type: any, lcProperty: string): boolean {
+    throw new Error('Not implemented.');
+  }
 
-  guards(typeOrFunc: any): {[key: string]: any;} { throw new Error('Not implemented.'); }
+  guards(typeOrFunc: any): {[key: string]: any;} {
+    throw new Error('Not implemented.');
+  }
 
-  componentModuleUrl(type: any, cmpMetadata: any): string { throw new Error('Not implemented.'); }
+  componentModuleUrl(type: any, cmpMetadata: any): string {
+    throw new Error('Not implemented.');
+  }
 }

packages/compiler/src/render3/r3_module_compiler.ts

@@ -12,9 +12,9 @@ import {mapLiteral} from '../output/map_util';
 import * as o from '../output/output_ast';
 import {OutputContext} from '../util';
 
-import {R3DependencyMetadata, R3FactoryTarget, compileFactoryFunction} from './r3_factory';
+import {compileFactoryFunction, R3DependencyMetadata, R3FactoryTarget} from './r3_factory';
 import {Identifiers as R3} from './r3_identifiers';
-import {R3Reference, convertMetaToOutput, jitOnlyGuardedExpression, mapToMapExpression} from './util';
+import {convertMetaToOutput, jitOnlyGuardedExpression, mapToMapExpression, R3Reference} from './util';
 
 export interface R3NgModuleDef {
   expression: o.Expression;
@@ -108,9 +108,7 @@ export function compileNgModule(meta: R3NgModuleMetadata): R3NgModuleDef {
   } = meta;
 
   const additionalStatements: o.Statement[] = [];
-  const definitionMap = {
+  const definitionMap = {type: internalType} as {
-    type: internalType
-  } as{
     type: o.Expression,
     bootstrap: o.Expression,
     declarations: o.Expression,
@@ -177,7 +175,7 @@ export function compileNgModule(meta: R3NgModuleMetadata): R3NgModuleDef {
 function generateSetNgModuleScopeCall(meta: R3NgModuleMetadata): o.Statement|null {
   const {adjacentType: moduleType, declarations, imports, exports, containsForwardDecls} = meta;
 
-  const scopeMap = {} as{
+  const scopeMap = {} as {
     declarations: o.Expression,
     imports: o.Expression,
     exports: o.Expression,
@@ -247,7 +245,7 @@ export function compileInjector(meta: R3InjectorMetadata): R3InjectorDef {
   });
   const definitionMap = {
     factory: result.factory,
-  } as{factory: o.Expression, providers: o.Expression, imports: o.Expression};
+  } as {factory: o.Expression, providers: o.Expression, imports: o.Expression};
 
   if (meta.providers !== null) {
     definitionMap.providers = meta.providers;
@@ -267,7 +265,7 @@ export function compileInjector(meta: R3InjectorMetadata): R3InjectorDef {
 export function compileNgModuleFromRender2(
     ctx: OutputContext, ngModule: CompileShallowModuleMetadata,
     injectableCompiler: InjectableCompiler): void {
-  const className = identifierName(ngModule.type) !;
+  const className = identifierName(ngModule.type)!;
 
   const rawImports = ngModule.rawImports ? [ngModule.rawImports] : [];
   const rawExports = ngModule.rawExports ? [ngModule.rawExports] : [];
@@ -288,7 +286,8 @@ export function compileNgModuleFromRender2(
           /* name */ 'ɵinj',
           /* type */ o.INFERRED_TYPE,
           /* modifiers */[o.StmtModifier.Static],
-          /* initializer */ injectorDef, )],
+          /* initializer */ injectorDef,
+          )],
       /* getters */[],
       /* constructorMethod */ new o.ClassMethod(null, [], []),
       /* methods */[]));

packages/compiler/src/render3/r3_pipe_compiler.ts

@@ -10,9 +10,9 @@ import {CompilePipeMetadata, identifierName} from '../compile_metadata';
 import {CompileReflector} from '../compile_reflector';
 import {DefinitionKind} from '../constant_pool';
 import * as o from '../output/output_ast';
-import {OutputContext, error} from '../util';
+import {error, OutputContext} from '../util';
 
-import {R3DependencyMetadata, R3FactoryTarget, compileFactoryFunction, dependenciesFromGlobalMetadata} from './r3_factory';
+import {compileFactoryFunction, dependenciesFromGlobalMetadata, R3DependencyMetadata, R3FactoryTarget} from './r3_factory';
 import {Identifiers as R3} from './r3_identifiers';
 import {R3Reference, typeWithParameters, wrapReference} from './util';
 

packages/compiler/src/render3/r3_template_transform.ts

@@ -215,7 +215,7 @@ class HtmlAstToIvyAst implements html.Visitor {
       // Moreover, if the node is an element, then we need to hoist its attributes to the template
       // node for matching against content projection selectors.
       const attrs = this.extractAttributes('ng-template', templateParsedProperties, i18nAttrsMeta);
-      const templateAttrs: (t.TextAttribute | t.BoundAttribute)[] = [];
+      const templateAttrs: (t.TextAttribute|t.BoundAttribute)[] = [];
       attrs.literal.forEach(attr => templateAttrs.push(attr));
       attrs.bound.forEach(attr => templateAttrs.push(attr));
       const hoistedAttrs = parsedElement instanceof t.Element ?
@@ -260,12 +260,12 @@ class HtmlAstToIvyAst implements html.Visitor {
       return null;
     }
     if (!isI18nRootNode(expansion.i18n)) {
-      throw new Error(
+      throw new Error(`Invalid type "${expansion.i18n.constructor}" for "i18n" property of ${
-          `Invalid type "${expansion.i18n.constructor}" for "i18n" property of ${expansion.sourceSpan.toString()}. Expected a "Message"`);
+          expansion.sourceSpan.toString()}. Expected a "Message"`);
     }
     const message = expansion.i18n;
     const vars: {[name: string]: t.BoundText} = {};
-    const placeholders: {[name: string]: t.Text | t.BoundText} = {};
+    const placeholders: {[name: string]: t.Text|t.BoundText} = {};
     // extract VARs from ICUs - we process them separately while
     // assembling resulting message via goog.getMsg function, since
     // we need to pass them to top-level goog.getMsg call
@@ -284,9 +284,13 @@ class HtmlAstToIvyAst implements html.Visitor {
     return new t.Icu(vars, placeholders, expansion.sourceSpan, message);
   }
 
-  visitExpansionCase(expansionCase: html.ExpansionCase): null { return null; }
+  visitExpansionCase(expansionCase: html.ExpansionCase): null {
+    return null;
+  }
 
-  visitComment(comment: html.Comment): null { return null; }
+  visitComment(comment: html.Comment): null {
+    return null;
+  }
 
   // convert view engine `ParsedProperty` to a format suitable for IVY
   private extractAttributes(
@@ -460,18 +464,26 @@ class NonBindableVisitor implements html.Visitor {
         ast.startSourceSpan, ast.endSourceSpan);
   }
 
-  visitComment(comment: html.Comment): any { return null; }
+  visitComment(comment: html.Comment): any {
+    return null;
+  }
 
   visitAttribute(attribute: html.Attribute): t.TextAttribute {
     return new t.TextAttribute(
         attribute.name, attribute.value, attribute.sourceSpan, undefined, attribute.i18n);
   }
 
-  visitText(text: html.Text): t.Text { return new t.Text(text.value, text.sourceSpan); }
+  visitText(text: html.Text): t.Text {
+    return new t.Text(text.value, text.sourceSpan);
+  }
 
-  visitExpansion(expansion: html.Expansion): any { return null; }
+  visitExpansion(expansion: html.Expansion): any {
+    return null;
+  }
 
-  visitExpansionCase(expansionCase: html.ExpansionCase): any { return null; }
+  visitExpansionCase(expansionCase: html.ExpansionCase): any {
+    return null;
+  }
 }
 
 const NON_BINDABLE_VISITOR = new NonBindableVisitor();

packages/compiler/src/render3/util.ts

@@ -13,14 +13,13 @@ import {OutputContext} from '../util';
 /**
  * Convert an object map with `Expression` values into a `LiteralMapExpr`.
  */
-export function mapToMapExpression(map: {[key: string]: o.Expression | undefined}):
+export function mapToMapExpression(map: {[key: string]: o.Expression|undefined}): o.LiteralMapExpr {
-    o.LiteralMapExpr {
   const result = Object.keys(map).map(
       key => ({
         key,
         // The assertion here is because really TypeScript doesn't allow us to express that if the
         // key is present, it will have a value, but this is true in reality.
-        value: map[key] !,
+        value: map[key]!,
         quoted: false,
       }));
   return o.literalMap(result);

packages/compiler/src/render3/view/api.ts

@@ -88,7 +88,7 @@ export interface R3DirectiveMetadata {
   /**
    * A mapping of input field names to the property names.
    */
-  inputs: {[field: string]: string | [string, string]};
+  inputs: {[field: string]: string|[string, string]};
 
   /**
    * A mapping of output field names to the property names.

packages/compiler/src/render3/view/compiler.ts

@@ -20,17 +20,17 @@ import {CssSelector, SelectorMatcher} from '../../selector';
 import {ShadowCss} from '../../shadow_css';
 import {CONTENT_ATTR, HOST_ATTR} from '../../style_compiler';
 import {BindingParser} from '../../template_parser/binding_parser';
-import {OutputContext, error} from '../../util';
+import {error, OutputContext} from '../../util';
 import {BoundEvent} from '../r3_ast';
-import {R3DependencyMetadata, R3FactoryTarget, R3ResolvedDependencyType, compileFactoryFunction} from '../r3_factory';
+import {compileFactoryFunction, R3DependencyMetadata, R3FactoryTarget, R3ResolvedDependencyType} from '../r3_factory';
 import {Identifiers as R3} from '../r3_identifiers';
 import {Render3ParseResult} from '../r3_template_transform';
 import {prepareSyntheticListenerFunctionName, prepareSyntheticPropertyName, typeWithParameters} from '../util';
 
 import {R3ComponentDef, R3ComponentMetadata, R3DirectiveDef, R3DirectiveMetadata, R3HostMetadata, R3QueryMetadata} from './api';
 import {MIN_STYLING_BINDING_SLOTS_REQUIRED, StylingBuilder, StylingInstructionCall} from './styling_builder';
-import {BindingScope, TemplateDefinitionBuilder, ValueConverter, makeBindingParser, prepareEventListenerParameters, renderFlagCheckIfStmt, resolveSanitizationFn} from './template';
+import {BindingScope, makeBindingParser, prepareEventListenerParameters, renderFlagCheckIfStmt, resolveSanitizationFn, TemplateDefinitionBuilder, ValueConverter} from './template';
-import {CONTEXT_NAME, DefinitionMap, RENDER_FLAGS, TEMPORARY_NAME, asLiteral, chainedInstruction, conditionallyCreateMapObjectLiteral, getQueryPredicate, temporaryAllocator} from './util';
+import {asLiteral, chainedInstruction, conditionallyCreateMapObjectLiteral, CONTEXT_NAME, DefinitionMap, getQueryPredicate, RENDER_FLAGS, TEMPORARY_NAME, temporaryAllocator} from './util';
 
 const EMPTY_ARRAY: any[] = [];
 
@@ -65,9 +65,10 @@ function baseDirectiveFields(
 
   // e.g. `hostBindings: (rf, ctx) => { ... }
   definitionMap.set(
-      'hostBindings', createHostBindingsFunction(
+      'hostBindings',
-                          meta.host, meta.typeSourceSpan, bindingParser, constantPool,
+      createHostBindingsFunction(
-                          meta.selector || '', meta.name, definitionMap));
+          meta.host, meta.typeSourceSpan, bindingParser, constantPool, meta.selector || '',
+          meta.name, definitionMap));
 
   // e.g 'inputs: {a: 'a'}`
   definitionMap.set('inputs', conditionallyCreateMapObjectLiteral(meta.inputs, true));
@@ -85,8 +86,7 @@ function baseDirectiveFields(
 /**
  * Add features to the definition map.
  */
-function addFeatures(
+function addFeatures(definitionMap: DefinitionMap, meta: R3DirectiveMetadata|R3ComponentMetadata) {
-    definitionMap: DefinitionMap, meta: R3DirectiveMetadata | R3ComponentMetadata) {
   // e.g. `features: [NgOnChangesFeature]`
   const features: o.Expression[] = [];
 
@@ -148,7 +148,8 @@ export function compileComponentFromMetadata(
     const selectorAttributes = firstSelector.getAttrs();
     if (selectorAttributes.length) {
       definitionMap.set(
-          'attrs', constantPool.getConstLiteral(
+          'attrs',
+          constantPool.getConstLiteral(
               o.literalArr(selectorAttributes.map(
                   value => value != null ? o.literal(value) : o.literal(undefined))),
               /* forceShared */ true));
@@ -273,7 +274,7 @@ export function compileComponentFromMetadata(
 export function compileDirectiveFromRender2(
     outputCtx: OutputContext, directive: CompileDirectiveMetadata, reflector: CompileReflector,
     bindingParser: BindingParser) {
-  const name = identifierName(directive.type) !;
+  const name = identifierName(directive.type)!;
   name || error(`Cannot resolver the name of ${directive.type}`);
 
   const definitionField = outputCtx.constantPool.propertyNameOf(DefinitionKind.Directive);
@@ -306,7 +307,7 @@ export function compileComponentFromRender2(
     outputCtx: OutputContext, component: CompileDirectiveMetadata, render3Ast: Render3ParseResult,
     reflector: CompileReflector, bindingParser: BindingParser, directiveTypeBySel: Map<string, any>,
     pipeTypeByName: Map<string, any>) {
-  const name = identifierName(component.type) !;
+  const name = identifierName(component.type)!;
   name || error(`Cannot resolver the name of ${component.type}`);
 
   const definitionField = outputCtx.constantPool.propertyNameOf(DefinitionKind.Component);
@@ -372,7 +373,8 @@ function queriesFromGlobalMetadata(
       propertyName: query.propertyName,
       first: query.first,
       predicate: selectorsFromGlobalMetadata(query.selectors, outputCtx),
-      descendants: query.descendants, read,
+      descendants: query.descendants,
+      read,
       static: !!query.static
     };
   });
@@ -464,7 +466,7 @@ function stringAsType(str: string): o.Type {
   return o.expressionType(o.literal(str));
 }
 
-function stringMapAsType(map: {[key: string]: string | string[]}): o.Type {
+function stringMapAsType(map: {[key: string]: string|string[]}): o.Type {
   const mapValues = Object.keys(map).map(key => {
     const value = Array.isArray(map[key]) ? map[key][0] : map[key];
     return {
@@ -723,7 +725,7 @@ function convertStylingCall(
 function getBindingNameAndInstruction(binding: ParsedProperty):
     {bindingName: string, instruction: o.ExternalReference, isAttribute: boolean} {
   let bindingName = binding.name;
-  let instruction !: o.ExternalReference;
+  let instruction!: o.ExternalReference;
 
   // Check to see if this is an attr binding or a property binding
   const attrMatches = bindingName.match(ATTR_REGEX);
@@ -817,8 +819,7 @@ export interface ParsedHostBindings {
   specialAttributes: {styleAttr?: string; classAttr?: string;};
 }
 
-export function parseHostBindings(host: {[key: string]: string | o.Expression}):
+export function parseHostBindings(host: {[key: string]: string|o.Expression}): ParsedHostBindings {
-    ParsedHostBindings {
   const attributes: {[key: string]: o.Expression} = {};
   const listeners: {[key: string]: string} = {};
   const properties: {[key: string]: string} = {};
@@ -893,5 +894,7 @@ export function verifyHostBindings(
 
 function compileStyles(styles: string[], selector: string, hostSelector: string): string[] {
   const shadowCss = new ShadowCss();
-  return styles.map(style => { return shadowCss !.shimCssText(style, selector, hostSelector); });
+  return styles.map(style => {
+    return shadowCss!.shimCssText(style, selector, hostSelector);
+  });
 }

packages/compiler/src/render3/view/i18n/context.ts

@@ -46,7 +46,7 @@ export class I18nContext {
   public placeholders = new Map<string, any[]>();
   public isEmitted: boolean = false;
 
-  private _registry !: any;
+  private _registry!: any;
   private _unresolvedCtxCount: number = 0;
 
   constructor(
@@ -66,9 +66,15 @@ export class I18nContext {
     updatePlaceholderMap(this.placeholders, ph, content);
   }
 
-  get icus() { return this._registry.icus; }
+  get icus() {
-  get isRoot() { return this.level === 0; }
+    return this._registry.icus;
-  get isResolved() { return this._unresolvedCtxCount === 0; }
+  }
+  get isRoot() {
+    return this.level === 0;
+  }
+  get isResolved() {
+    return this._unresolvedCtxCount === 0;
+  }
 
   getSerializedPlaceholders() {
     const result = new Map<string, any[]>();
@@ -78,7 +84,9 @@ export class I18nContext {
   }
 
   // public API to accumulate i18n-related content
-  appendBinding(binding: AST) { this.bindings.add(binding); }
+  appendBinding(binding: AST) {
+    this.bindings.add(binding);
+  }
   appendIcu(name: string, ref: o.Expression) {
     updatePlaceholderMap(this._registry.icus, name, ref);
   }
@@ -181,7 +189,7 @@ function wrapTag(symbol: string, {index, ctx, isVoid}: any, closed?: boolean): s
                   wrap(symbol, index, ctx, closed);
 }
 
-function findTemplateFn(ctx: number, templateIndex: number | null) {
+function findTemplateFn(ctx: number, templateIndex: number|null) {
   return (token: any) => typeof token === 'object' && token.type === TagType.TEMPLATE &&
       token.index === templateIndex && token.ctx === ctx;
 }

packages/compiler/src/render3/view/i18n/get_msg_utils.ts

@@ -47,23 +47,32 @@ export function createGoogleGetMsgStatements(
  * placeholders in `{$placeholder}` (for plain messages) or `{PLACEHOLDER}` (inside ICUs) format.
  */
 class GetMsgSerializerVisitor implements i18n.Visitor {
-  private formatPh(value: string): string { return `{$${formatI18nPlaceholderName(value)}}`; }
+  private formatPh(value: string): string {
+    return `{$${formatI18nPlaceholderName(value)}}`;
+  }
 
-  visitText(text: i18n.Text): any { return text.value; }
+  visitText(text: i18n.Text): any {
+    return text.value;
+  }
 
   visitContainer(container: i18n.Container): any {
     return container.children.map(child => child.visit(this)).join('');
   }
 
-  visitIcu(icu: i18n.Icu): any { return serializeIcuNode(icu); }
+  visitIcu(icu: i18n.Icu): any {
+    return serializeIcuNode(icu);
+  }
 
   visitTagPlaceholder(ph: i18n.TagPlaceholder): any {
     return ph.isVoid ?
         this.formatPh(ph.startName) :
-        `${this.formatPh(ph.startName)}${ph.children.map(child => child.visit(this)).join('')}${this.formatPh(ph.closeName)}`;
+        `${this.formatPh(ph.startName)}${ph.children.map(child => child.visit(this)).join('')}${
+            this.formatPh(ph.closeName)}`;
   }
 
-  visitPlaceholder(ph: i18n.Placeholder): any { return this.formatPh(ph.name); }
+  visitPlaceholder(ph: i18n.Placeholder): any {
+    return this.formatPh(ph.name);
+  }
 
   visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): any {
     return this.formatPh(ph.name);

packages/compiler/src/render3/view/i18n/icu_serializer.ts

@@ -11,7 +11,9 @@ import * as i18n from '../../../i18n/i18n_ast';
 import {formatI18nPlaceholderName} from './util';
 
 class IcuSerializerVisitor implements i18n.Visitor {
-  visitText(text: i18n.Text): any { return text.value; }
+  visitText(text: i18n.Text): any {
+    return text.value;
+  }
 
   visitContainer(container: i18n.Container): any {
     return container.children.map(child => child.visit(this)).join('');
@@ -27,10 +29,13 @@ class IcuSerializerVisitor implements i18n.Visitor {
   visitTagPlaceholder(ph: i18n.TagPlaceholder): any {
     return ph.isVoid ?
         this.formatPh(ph.startName) :
-        `${this.formatPh(ph.startName)}${ph.children.map(child => child.visit(this)).join('')}${this.formatPh(ph.closeName)}`;
+        `${this.formatPh(ph.startName)}${ph.children.map(child => child.visit(this)).join('')}${
+            this.formatPh(ph.closeName)}`;
   }
 
-  visitPlaceholder(ph: i18n.Placeholder): any { return this.formatPh(ph.name); }
+  visitPlaceholder(ph: i18n.Placeholder): any {
+    return this.formatPh(ph.name);
+  }
 
   visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): any {
     return this.formatPh(ph.name);

packages/compiler/src/render3/view/i18n/localize_utils.ts

@@ -28,7 +28,9 @@ class MessagePiece {
 }
 class LiteralPiece extends MessagePiece {}
 class PlaceholderPiece extends MessagePiece {
-  constructor(name: string) { super(formatI18nPlaceholderName(name, /* useCamelCase */ false)); }
+  constructor(name: string) {
+    super(formatI18nPlaceholderName(name, /* useCamelCase */ false));
+  }
 }
 
 /**

packages/compiler/src/render3/view/i18n/meta.ts

@@ -8,12 +8,12 @@
 
 import {computeDecimalDigest, computeDigest, decimalDigest} from '../../../i18n/digest';
 import * as i18n from '../../../i18n/i18n_ast';
-import {VisitNodeFn, createI18nMessageFactory} from '../../../i18n/i18n_parser';
+import {createI18nMessageFactory, VisitNodeFn} from '../../../i18n/i18n_parser';
 import * as html from '../../../ml_parser/ast';
 import {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from '../../../ml_parser/interpolation_config';
 import * as o from '../../../output/output_ast';
 
-import {I18N_ATTR, I18N_ATTR_PREFIX, hasI18nAttrs, icuFromI18nMessage} from './util';
+import {hasI18nAttrs, I18N_ATTR, I18N_ATTR_PREFIX, icuFromI18nMessage} from './util';
 
 export type I18nMeta = {
   id?: string,
@@ -134,10 +134,18 @@ export class I18nMetaVisitor implements html.Visitor {
     return expansion;
   }
 
-  visitText(text: html.Text): any { return text; }
+  visitText(text: html.Text): any {
-  visitAttribute(attribute: html.Attribute): any { return attribute; }
+    return text;
-  visitComment(comment: html.Comment): any { return comment; }
+  }
-  visitExpansionCase(expansionCase: html.ExpansionCase): any { return expansionCase; }
+  visitAttribute(attribute: html.Attribute): any {
+    return attribute;
+  }
+  visitComment(comment: html.Comment): any {
+    return comment;
+  }
+  visitExpansionCase(expansionCase: html.ExpansionCase): any {
+    return expansionCase;
+  }
 
   /**
    * Parse the general form `meta` passed into extract the explicit metadata needed to create a

packages/compiler/src/render3/view/i18n/util.ts

@@ -49,7 +49,7 @@ export function icuFromI18nMessage(message: i18n.Message) {
   return message.nodes[0] as i18n.IcuPlaceholder;
 }
 
-export function wrapI18nPlaceholder(content: string | number, contextId: number = 0): string {
+export function wrapI18nPlaceholder(content: string|number, contextId: number = 0): string {
   const blockId = contextId > 0 ? `:${contextId}` : '';
   return `${I18N_PLACEHOLDER_SYMBOL}${content}${blockId}${I18N_PLACEHOLDER_SYMBOL}`;
 }
@@ -147,7 +147,7 @@ export function formatI18nPlaceholderName(name: string, useCamelCase: boolean =
   if (/^\d+$/.test(chunks[chunks.length - 1])) {
     postfix = chunks.pop();
   }
-  let raw = chunks.shift() !.toLowerCase();
+  let raw = chunks.shift()!.toLowerCase();
   if (chunks.length) {
     raw += chunks.map(c => c.charAt(0).toUpperCase() + c.slice(1).toLowerCase()).join('');
   }
@@ -170,5 +170,5 @@ export function getTranslationConstPrefix(extra: string): string {
  */
 export function declareI18nVariable(variable: o.ReadVarExpr): o.Statement {
   return new o.DeclareVarStmt(
-      variable.name !, undefined, o.INFERRED_TYPE, null, variable.sourceSpan);
+      variable.name!, undefined, o.INFERRED_TYPE, null, variable.sourceSpan);
 }

packages/compiler/src/render3/view/style_parser.ts

@@ -110,7 +110,11 @@ export function stripUnnecessaryQuotes(value: string): string {
 }
 
 export function hyphenate(value: string): string {
-  return value.replace(/[a-z][A-Z]/g, v => {
+  return value
+      .replace(
+          /[a-z][A-Z]/g,
+          v => {
             return v.charAt(0) + '-' + v.charAt(1);
-              }).toLowerCase();
+          })
+      .toLowerCase();
 }

packages/compiler/src/render3/view/styling_builder.ts

@@ -226,7 +226,10 @@ export class StylingBuilder {
     const entry: BoundStylingEntry = {
       name: property,
       sanitize: property ? isStyleSanitizable(property) : true,
-      unit: unit || bindingUnit, value, sourceSpan, hasOverrideFlag
+      unit: unit || bindingUnit,
+      value,
+      sourceSpan,
+      hasOverrideFlag
     };
     if (isMapBased) {
       this._styleMapInput = entry;
@@ -385,7 +388,7 @@ export class StylingBuilder {
         supportsInterpolation: true,
         sourceSpan: stylingInput.sourceSpan,
         allocateBindingSlots: totalBindingSlotsRequired,
-        params: (convertFn: (value: any) => o.Expression | o.Expression[]) => {
+        params: (convertFn: (value: any) => o.Expression|o.Expression[]) => {
           const convertResult = convertFn(mapValue);
           const params = Array.isArray(convertResult) ? convertResult : [convertResult];
           return params;

packages/compiler/src/render3/view/t2_api.ts

@@ -22,7 +22,9 @@ import {BoundAttribute, BoundEvent, Element, Node, Reference, Template, TextAttr
 /**
  * A logical target for analysis, which could contain a template or other types of bindings.
  */
-export interface Target { template?: Node[]; }
+export interface Target {
+  template?: Node[];
+}
 
 /**
  * Metadata regarding a directive that's needed to match it against template elements. This is
@@ -44,7 +46,7 @@ export interface DirectiveMeta {
    *
    * Goes from property names to field names.
    */
-  inputs: {[property: string]: string | [string, string]};
+  inputs: {[property: string]: string|[string, string]};
 
   /**
    * Set of outputs which this directive claims.
@@ -67,7 +69,9 @@ export interface DirectiveMeta {
  *
  * The returned `BoundTarget` has an API for extracting information about the processed target.
  */
-export interface TargetBinder<D extends DirectiveMeta> { bind(target: Target): BoundTarget<D>; }
+export interface TargetBinder<D extends DirectiveMeta> {
+  bind(target: Target): BoundTarget<D>;
+}
 
 /**
  * Result of performing the binding operation against a `Target`.

packages/compiler/src/render3/view/t2_binder.ts

@@ -152,7 +152,7 @@ class Scope implements Visitor {
   lookup(name: string): Reference|Variable|null {
     if (this.namedEntities.has(name)) {
       // Found in the local scope.
-      return this.namedEntities.get(name) !;
+      return this.namedEntities.get(name)!;
     } else if (this.parentScope !== undefined) {
       // Not in the local scope, but there's a parent scope so check there.
       return this.parentScope.lookup(name);
@@ -217,11 +217,17 @@ class DirectiveBinder<DirectiveT extends DirectiveMeta> implements Visitor {
     return {directives, bindings, references};
   }
 
-  private ingest(template: Node[]): void { template.forEach(node => node.visit(this)); }
+  private ingest(template: Node[]): void {
+    template.forEach(node => node.visit(this));
+  }
 
-  visitElement(element: Element): void { this.visitElementOrTemplate(element.name, element); }
+  visitElement(element: Element): void {
+    this.visitElementOrTemplate(element.name, element);
+  }
 
-  visitTemplate(template: Template): void { this.visitElementOrTemplate('ng-template', template); }
+  visitTemplate(template: Template): void {
+    this.visitElementOrTemplate('ng-template', template);
+  }
 
   visitElementOrTemplate(elementName: string, node: Element|Template): void {
     // First, determine the HTML shape of the node for the purpose of directive matching.
@@ -269,7 +275,7 @@ class DirectiveBinder<DirectiveT extends DirectiveMeta> implements Visitor {
     });
 
     // Associate attributes/bindings on the node with directives or with the node itself.
-    type BoundNode = BoundAttribute | BoundEvent | TextAttribute;
+    type BoundNode = BoundAttribute|BoundEvent|TextAttribute;
     const setAttributeBinding =
         (attribute: BoundNode, ioType: keyof Pick<DirectiveMeta, 'inputs'|'outputs'>) => {
           const dir = directives.find(dir => dir[ioType].hasOwnProperty(attribute.name));
@@ -432,11 +438,17 @@ class TemplateBinder extends RecursiveAstVisitor implements Visitor {
 
   // The remaining visitors are concerned with processing AST expressions within template bindings
 
-  visitBoundAttribute(attribute: BoundAttribute) { attribute.value.visit(this); }
+  visitBoundAttribute(attribute: BoundAttribute) {
+    attribute.value.visit(this);
+  }
 
-  visitBoundEvent(event: BoundEvent) { event.handler.visit(this); }
+  visitBoundEvent(event: BoundEvent) {
+    event.handler.visit(this);
+  }
 
-  visitBoundText(text: BoundText) { text.value.visit(this); }
+  visitBoundText(text: BoundText) {
+    text.value.visit(this);
+  }
   visitPipe(ast: BindingPipe, context: any): any {
     this.usedPipes.add(ast.name);
     return super.visitPipe(ast, context);
@@ -526,7 +538,9 @@ export class R3BoundTarget<DirectiveT extends DirectiveMeta> implements BoundTar
     return this.symbols.get(symbol) || null;
   }
 
-  getNestingLevel(template: Template): number { return this.nestingLevel.get(template) || 0; }
+  getNestingLevel(template: Template): number {
+    return this.nestingLevel.get(template) || 0;
+  }
 
   getUsedDirectives(): DirectiveT[] {
     const set = new Set<DirectiveT>();
@@ -534,5 +548,7 @@ export class R3BoundTarget<DirectiveT extends DirectiveMeta> implements BoundTar
     return Array.from(set.values());
   }
 
-  getUsedPipes(): string[] { return Array.from(this.usedPipes); }
+  getUsedPipes(): string[] {
+    return Array.from(this.usedPipes);
+  }
 }

packages/compiler/src/render3/view/template.ts

@@ -7,7 +7,7 @@
  */
 
 import {flatten, sanitizeIdentifier} from '../../compile_metadata';
-import {BindingForm, BuiltinFunctionCall, LocalResolver, convertActionBinding, convertPropertyBinding, convertUpdateArguments} from '../../compiler_util/expression_converter';
+import {BindingForm, BuiltinFunctionCall, convertActionBinding, convertPropertyBinding, convertUpdateArguments, LocalResolver} from '../../compiler_util/expression_converter';
 import {ConstantPool} from '../../constant_pool';
 import * as core from '../../core';
 import {AST, AstMemoryEfficientTransformer, BindingPipe, BindingType, FunctionCall, ImplicitReceiver, Interpolation, LiteralArray, LiteralMap, LiteralPrimitive, ParsedEventType, PropertyRead} from '../../expression_parser/ast';
@@ -36,9 +36,9 @@ import {I18nContext} from './i18n/context';
 import {createGoogleGetMsgStatements} from './i18n/get_msg_utils';
 import {createLocalizeStatements} from './i18n/localize_utils';
 import {I18nMetaVisitor} from './i18n/meta';
-import {I18N_ICU_MAPPING_PREFIX, TRANSLATION_PREFIX, assembleBoundTextPlaceholders, assembleI18nBoundString, declareI18nVariable, getTranslationConstPrefix, i18nFormatPlaceholderNames, icuFromI18nMessage, isI18nRootNode, isSingleI18nIcu, placeholdersToParams, wrapI18nPlaceholder} from './i18n/util';
+import {assembleBoundTextPlaceholders, assembleI18nBoundString, declareI18nVariable, getTranslationConstPrefix, I18N_ICU_MAPPING_PREFIX, i18nFormatPlaceholderNames, icuFromI18nMessage, isI18nRootNode, isSingleI18nIcu, placeholdersToParams, TRANSLATION_PREFIX, wrapI18nPlaceholder} from './i18n/util';
 import {StylingBuilder, StylingInstruction} from './styling_builder';
-import {CONTEXT_NAME, IMPLICIT_REFERENCE, NON_BINDABLE_ATTR, REFERENCE_PREFIX, RENDER_FLAGS, asLiteral, chainedInstruction, getAttrsForDirectiveMatching, getInterpolationArgsLength, invalid, trimTrailingNulls, unsupported} from './util';
+import {asLiteral, chainedInstruction, CONTEXT_NAME, getAttrsForDirectiveMatching, getInterpolationArgsLength, IMPLICIT_REFERENCE, invalid, NON_BINDABLE_ATTR, REFERENCE_PREFIX, RENDER_FLAGS, trimTrailingNulls, unsupported} from './util';
 
 
 
@@ -61,8 +61,8 @@ export function renderFlagCheckIfStmt(
 }
 
 export function prepareEventListenerParameters(
-    eventAst: t.BoundEvent, handlerName: string | null = null,
+    eventAst: t.BoundEvent, handlerName: string|null = null,
-    scope: BindingScope | null = null): o.Expression[] {
+    scope: BindingScope|null = null): o.Expression[] {
   const {type, name, target, phase, handler} = eventAst;
   if (target && !GLOBAL_TARGET_RESOLVERS.has(target)) {
     throw new Error(`Unexpected global target '${target}' defined for '${name}' event.
@@ -85,7 +85,7 @@ export function prepareEventListenerParameters(
   statements.push(...bindingExpr.render3Stmts);
 
   const eventName: string =
-      type === ParsedEventType.Animation ? prepareSyntheticListenerName(name, phase !) : name;
+      type === ParsedEventType.Animation ? prepareSyntheticListenerName(name, phase!) : name;
   const fnName = handlerName && sanitizeIdentifier(handlerName);
   const fnArgs: o.FnParam[] = [];
 
@@ -98,7 +98,7 @@ export function prepareEventListenerParameters(
   if (target) {
     params.push(
         o.literal(false),  // `useCapture` flag, defaults to `false`
-        o.importExpr(GLOBAL_TARGET_RESOLVERS.get(target) !));
+        o.importExpr(GLOBAL_TARGET_RESOLVERS.get(target)!));
   }
   return params;
 }
@@ -207,12 +207,12 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     // - this template has parent i18n context
     // - or the template has i18n meta associated with it,
     //   but it's not initiated by the Element (e.g. <ng-template i18n>)
-    const initI18nContext =
+    const initI18nContext = this.i18nContext ||
-        this.i18nContext || (isI18nRootNode(i18n) && !isSingleI18nIcu(i18n) &&
+        (isI18nRootNode(i18n) && !isSingleI18nIcu(i18n) &&
          !(isSingleElementTemplate(nodes) && nodes[0].i18n === i18n));
     const selfClosingI18nInstruction = hasTextChildrenOnly(nodes);
     if (initI18nContext) {
-      this.i18nStart(null, i18n !, selfClosingI18nInstruction);
+      this.i18nStart(null, i18n!, selfClosingI18nInstruction);
     }
 
     // This is the initial pass through the nodes of this template. In this pass, we
@@ -295,10 +295,14 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
   }
 
   // LocalResolver
-  getLocal(name: string): o.Expression|null { return this._bindingScope.get(name); }
+  getLocal(name: string): o.Expression|null {
+    return this._bindingScope.get(name);
+  }
 
   // LocalResolver
-  notifyImplicitReceiverUse(): void { this._bindingScope.notifyImplicitReceiverUse(); }
+  notifyImplicitReceiverUse(): void {
+    this._bindingScope.notifyImplicitReceiverUse();
+  }
 
   private i18nTranslate(
       message: i18n.Message, params: {[name: string]: o.Expression} = {}, ref?: o.ReadVarExpr,
@@ -335,12 +339,11 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
 
   private i18nAppendBindings(expressions: AST[]) {
     if (expressions.length > 0) {
-      expressions.forEach(expression => this.i18n !.appendBinding(expression));
+      expressions.forEach(expression => this.i18n!.appendBinding(expression));
     }
   }
 
-  private i18nBindProps(props: {[key: string]: t.Text | t.BoundText}):
+  private i18nBindProps(props: {[key: string]: t.Text|t.BoundText}): {[key: string]: o.Expression} {
-      {[key: string]: o.Expression} {
     const bound: {[key: string]: o.Expression} = {};
     Object.keys(props).forEach(key => {
       const prop = props[key];
@@ -351,7 +354,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
         this.allocateBindingSlots(value);
         if (value instanceof Interpolation) {
           const {strings, expressions} = value;
-          const {id, bindings} = this.i18n !;
+          const {id, bindings} = this.i18n!;
           const label = assembleI18nBoundString(strings, bindings.size, id);
           this.i18nAppendBindings(expressions);
           bound[key] = o.literal(label);
@@ -424,7 +427,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       void {
     const index = this.allocateDataSlot();
     if (this.i18nContext) {
-      this.i18n = this.i18nContext.forkChildContext(index, this.templateIndex !, meta);
+      this.i18n = this.i18nContext.forkChildContext(index, this.templateIndex!, meta);
     } else {
       const ref = o.variable(this.constantPool.uniqueName(TRANSLATION_PREFIX));
       this.i18n = new I18nContext(index, ref, 0, this.templateIndex, meta);
@@ -479,7 +482,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     const i18nAttrArgs: o.Expression[] = [];
     const bindings: ChainableBindingInstruction[] = [];
     attrs.forEach(attr => {
-      const message = attr.i18n !as i18n.Message;
+      const message = attr.i18n! as i18n.Message;
       if (attr instanceof t.TextAttribute) {
         i18nAttrArgs.push(o.literal(attr.name), this.i18nTranslate(message));
       } else {
@@ -559,7 +562,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
 
     this.creationInstruction(ngContent.sourceSpan, R3.projection, parameters);
     if (this.i18n) {
-      this.i18n.appendProjection(ngContent.i18n !, slot);
+      this.i18n.appendProjection(ngContent.i18n!, slot);
     }
   }
 
@@ -571,7 +574,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     const isI18nRootElement: boolean =
         isI18nRootNode(element.i18n) && !isSingleI18nIcu(element.i18n);
 
-    const i18nAttrs: (t.TextAttribute | t.BoundAttribute)[] = [];
+    const i18nAttrs: (t.TextAttribute|t.BoundAttribute)[] = [];
     const outputAttrs: t.TextAttribute[] = [];
 
     const [namespaceKey, elementName] = splitNsName(element.name);
@@ -633,7 +636,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     }
 
     if (this.i18n) {
-      this.i18n.appendElement(element.i18n !, elementIndex);
+      this.i18n.appendElement(element.i18n!, elementIndex);
     }
 
     // Note that we do not append text node instructions and ICUs inside i18n section,
@@ -676,7 +679,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       // Note: it's important to keep i18n/i18nStart instructions after i18nAttributes and
       // listeners, to make sure i18nAttributes instruction targets current element at runtime.
       if (isI18nRootElement) {
-        this.i18nStart(element.sourceSpan, element.i18n !, createSelfClosingI18nInstruction);
+        this.i18nStart(element.sourceSpan, element.i18n!, createSelfClosingI18nInstruction);
       }
     }
 
@@ -757,7 +760,8 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
               propertyBindings.push({
                 name: attrName,
                 sourceSpan: input.sourceSpan,
-                value: () => this.convertPropertyBinding(value), params
+                value: () => this.convertPropertyBinding(value),
+                params
               });
             }
           } else if (inputType === BindingType.Attribute) {
@@ -773,7 +777,8 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
               attributeBindings.push({
                 name: attrName,
                 sourceSpan: input.sourceSpan,
-                value: () => this.convertPropertyBinding(boundValue), params
+                value: () => this.convertPropertyBinding(boundValue),
+                params
               });
             }
           } else {
@@ -801,7 +806,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     t.visitAll(this, element.children);
 
     if (!isI18nRootElement && this.i18n) {
-      this.i18n.appendElement(element.i18n !, elementIndex, true);
+      this.i18n.appendElement(element.i18n!, elementIndex, true);
     }
 
     if (!createSelfClosingInstruction) {
@@ -823,7 +828,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     const templateIndex = this.allocateDataSlot();
 
     if (this.i18n) {
-      this.i18n.appendTemplate(template.i18n !, templateIndex);
+      this.i18n.appendTemplate(template.i18n!, templateIndex);
     }
 
     const tagName = sanitizeIdentifier(template.tagName || '');
@@ -892,7 +897,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     // Only add normal input/output binding instructions on explicit <ng-template> elements.
     if (template.tagName === NG_TEMPLATE_TAG_NAME) {
       const inputs: t.BoundAttribute[] = [];
-      const i18nAttrs: (t.TextAttribute | t.BoundAttribute)[] =
+      const i18nAttrs: (t.TextAttribute|t.BoundAttribute)[] =
           template.attributes.filter(attr => !!attr.i18n);
 
       template.inputs.forEach(
@@ -935,7 +940,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       const value = text.value.visit(this._valueConverter);
       this.allocateBindingSlots(value);
       if (value instanceof Interpolation) {
-        this.i18n.appendBoundText(text.i18n !);
+        this.i18n.appendBoundText(text.i18n!);
         this.i18nAppendBindings(value.expressions);
       }
       return;
@@ -975,15 +980,15 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     // to generate i18n context and the necessary instructions
     if (!this.i18n) {
       initWasInvoked = true;
-      this.i18nStart(null, icu.i18n !, true);
+      this.i18nStart(null, icu.i18n!, true);
     }
 
-    const i18n = this.i18n !;
+    const i18n = this.i18n!;
     const vars = this.i18nBindProps(icu.vars);
     const placeholders = this.i18nBindProps(icu.placeholders);
 
     // output ICU directly and keep ICU reference in context
-    const message = icu.i18n !as i18n.Message;
+    const message = icu.i18n! as i18n.Message;
 
     // we always need post-processing function for ICUs, to make sure that:
     // - all placeholders in a form of {PLACEHOLDER} are replaced with actual values (note:
@@ -1016,13 +1021,21 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
     return null;
   }
 
-  private allocateDataSlot() { return this._dataIndex++; }
+  private allocateDataSlot() {
+    return this._dataIndex++;
+  }
 
-  getConstCount() { return this._dataIndex; }
+  getConstCount() {
+    return this._dataIndex;
+  }
 
-  getVarCount() { return this._pureFunctionSlots; }
+  getVarCount() {
+    return this._pureFunctionSlots;
+  }
 
-  getConsts() { return this._constants; }
+  getConsts() {
+    return this._constants;
+  }
 
   getNgContentSelectors(): o.Expression|null {
     return this._ngContentReservedSlots.length ?
@@ -1030,7 +1043,9 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
         null;
   }
 
-  private bindingContext() { return `${this._bindingContext++}`; }
+  private bindingContext() {
+    return `${this._bindingContext++}`;
+  }
 
   private templatePropertyBindings(
       templateIndex: number, attrs: (t.BoundAttribute|t.TextAttribute)[]) {
@@ -1092,8 +1107,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
         calls.push({
           sourceSpan: call.sourceSpan,
           value: () => {
-            return call
+            return call.params(
-                .params(
                        value => (call.supportsInterpolation && value instanceof Interpolation) ?
                            this.getUpdateInstructionArguments(value) :
                            this.convertPropertyBinding(value)) as o.Expression[];
@@ -1114,7 +1128,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
   }
 
   private creationInstructionChain(reference: o.ExternalReference, calls: {
-    sourceSpan: ParseSourceSpan | null,
+    sourceSpan: ParseSourceSpan|null,
     params: () => o.Expression[]
   }[]) {
     const span = calls.length ? calls[0].sourceSpan : null;
@@ -1228,8 +1242,9 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
   private matchDirectives(elementName: string, elOrTpl: t.Element|t.Template) {
     if (this.directiveMatcher) {
       const selector = createCssSelector(elementName, getAttrsForDirectiveMatching(elOrTpl));
-      this.directiveMatcher.match(
+      this.directiveMatcher.match(selector, (cssSelector, staticType) => {
-          selector, (cssSelector, staticType) => { this.directives.add(staticType); });
+        this.directives.add(staticType);
+      });
     }
   }
 
@@ -1277,7 +1292,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       attrExprs.push(...getNgProjectAsLiteral(ngProjectAsAttr));
     }
 
-    function addAttrExpr(key: string | number, value?: o.Expression): void {
+    function addAttrExpr(key: string|number, value?: o.Expression): void {
       if (typeof key === 'string') {
         if (!alreadySeen.has(key)) {
           attrExprs.push(...getAttributeNameLiterals(key));
@@ -1390,7 +1405,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       const eventName: string = outputAst.name;
       const bindingFnName = outputAst.type === ParsedEventType.Animation ?
           // synthetic @listener.foo values are treated the exact same as are standard listeners
-          prepareSyntheticListenerFunctionName(eventName, outputAst.phase !) :
+          prepareSyntheticListenerFunctionName(eventName, outputAst.phase!) :
           sanitizeIdentifier(eventName);
       const handlerName = `${this.templateName}_${tagName}_${bindingFnName}_${index}_listener`;
       const scope = this._bindingScope.nestedScope(this._bindingScope.bindingLevel);
@@ -1492,7 +1507,7 @@ function pureFunctionCallInfo(args: o.Expression[]) {
 }
 
 function instruction(
-    span: ParseSourceSpan | null, reference: o.ExternalReference,
+    span: ParseSourceSpan|null, reference: o.ExternalReference,
     params: o.Expression[]): o.Expression {
   return o.importExpr(reference, null, span).callFn(params, span);
 }
@@ -1504,7 +1519,7 @@ function generateNextContextExpr(relativeLevelDiff: number): o.Expression {
 }
 
 function getLiteralFactory(
-    constantPool: ConstantPool, literal: o.LiteralArrayExpr | o.LiteralMapExpr,
+    constantPool: ConstantPool, literal: o.LiteralArrayExpr|o.LiteralMapExpr,
     allocateSlots: (numSlots: number) => number): o.Expression {
   const {literalFactory, literalFactoryArguments} = constantPool.getLiteralFactory(literal);
   // Allocate 1 slot for the result plus 1 per argument
@@ -1570,9 +1585,8 @@ const SHARED_CONTEXT_KEY = '$$shared_ctx$$';
  * declaration should always come before the local ref declaration.
  */
 type BindingData = {
-  retrievalLevel: number; lhs: o.Expression; declareLocalCallback?: DeclareLocalVarCallback;
+  retrievalLevel: number; lhs: o.Expression;
-  declare: boolean;
+  declareLocalCallback?: DeclareLocalVarCallback; declare: boolean; priority: number;
-  priority: number;
   localRef: boolean;
 };
 
@@ -1580,7 +1594,11 @@ type BindingData = {
  * The sorting priority of a local variable declaration. Higher numbers
  * mean the declaration will appear first in the generated code.
  */
-const enum DeclarationPriority { DEFAULT = 0, CONTEXT = 1, SHARED_CONTEXT = 2 }
+const enum DeclarationPriority {
+  DEFAULT = 0,
+  CONTEXT = 1,
+  SHARED_CONTEXT = 2
+}
 
 export class BindingScope implements LocalResolver {
   /** Keeps a map from local variables to their BindingData. */
@@ -1669,7 +1687,9 @@ export class BindingScope implements LocalResolver {
   }
 
   // Implemented as part of LocalResolver.
-  getLocal(name: string): (o.Expression|null) { return this.get(name); }
+  getLocal(name: string): (o.Expression|null) {
+    return this.get(name);
+  }
 
   // Implemented as part of LocalResolver.
   notifyImplicitReceiverUse(): void {
@@ -1677,7 +1697,7 @@ export class BindingScope implements LocalResolver {
       // Since the implicit receiver is accessed in an embedded view, we need to
       // ensure that we declare a shared context variable for the current template
       // in the update variables.
-      this.map.get(SHARED_CONTEXT_KEY + 0) !.declare = true;
+      this.map.get(SHARED_CONTEXT_KEY + 0)!.declare = true;
     }
   }
 
@@ -1698,7 +1718,7 @@ export class BindingScope implements LocalResolver {
       this.generateSharedContextVar(retrievalLevel);
     }
     // Shared context variables are always generated as "ReadVarExpr".
-    return this.map.get(bindingKey) !.lhs as o.ReadVarExpr;
+    return this.map.get(bindingKey)!.lhs as o.ReadVarExpr;
   }
 
   getSharedContextName(retrievalLevel: number): o.ReadVarExpr|null {
@@ -1735,7 +1755,7 @@ export class BindingScope implements LocalResolver {
   }
 
   getComponentProperty(name: string): o.Expression {
-    const componentValue = this.map.get(SHARED_CONTEXT_KEY + 0) !;
+    const componentValue = this.map.get(SHARED_CONTEXT_KEY + 0)!;
     componentValue.declare = true;
     this.maybeRestoreView(0, false);
     return componentValue.lhs.prop(name);
@@ -1748,11 +1768,11 @@ export class BindingScope implements LocalResolver {
     // 2 - we are looking up a local ref, which requires restoring the view where the local
     // ref is stored
     if (this.isListenerScope() && (retrievalLevel < this.bindingLevel || localRefLookup)) {
-      if (!this.parent !.restoreViewVariable) {
+      if (!this.parent!.restoreViewVariable) {
         // parent saves variable to generate a shared `const $s$ = getCurrentView();` instruction
-        this.parent !.restoreViewVariable = o.variable(this.parent !.freshReferenceName());
+        this.parent!.restoreViewVariable = o.variable(this.parent!.freshReferenceName());
       }
-      this.restoreViewVariable = this.parent !.restoreViewVariable;
+      this.restoreViewVariable = this.parent!.restoreViewVariable;
     }
   }
 
@@ -1771,7 +1791,9 @@ export class BindingScope implements LocalResolver {
         [];
   }
 
-  isListenerScope() { return this.parent && this.parent.bindingLevel === this.bindingLevel; }
+  isListenerScope() {
+    return this.parent && this.parent.bindingLevel === this.bindingLevel;
+  }
 
   variableDeclarations(): o.Statement[] {
     let currentContextLevel = 0;
@@ -1780,7 +1802,8 @@ export class BindingScope implements LocalResolver {
                .sort((a, b) => b.retrievalLevel - a.retrievalLevel || b.priority - a.priority)
                .reduce((stmts: o.Statement[], value: BindingData) => {
                  const levelDiff = this.bindingLevel - value.retrievalLevel;
-          const currStmts = value.declareLocalCallback !(this, levelDiff - currentContextLevel);
+                 const currStmts =
+                     value.declareLocalCallback!(this, levelDiff - currentContextLevel);
                  currentContextLevel = levelDiff;
                  return stmts.concat(currStmts);
                }, []) as o.Statement[];
@@ -2126,7 +2149,8 @@ export function getTranslationDeclStmts(
   const statements: o.Statement[] = [
     declareI18nVariable(variable),
     o.ifStmt(
-        createClosureModeGuard(), createGoogleGetMsgStatements(
+        createClosureModeGuard(),
+        createGoogleGetMsgStatements(
             variable, message, closureVar,
             i18nFormatPlaceholderNames(params, /* useCamelCase */ true)),
         createLocalizeStatements(

packages/compiler/src/render3/view/util.ts

@@ -69,7 +69,7 @@ export function unsupported(this: void|Function, feature: string): never {
   throw new Error(`Feature ${feature} is not supported yet`);
 }
 
-export function invalid<T>(this: t.Visitor, arg: o.Expression | o.Statement | t.Node): never {
+export function invalid<T>(this: t.Visitor, arg: o.Expression|o.Statement|t.Node): never {
   throw new Error(
       `Invalid state: Visitor ${this.constructor.name} doesn't handle ${arg.constructor.name}`);
 }
@@ -82,7 +82,7 @@ export function asLiteral(value: any): o.Expression {
 }
 
 export function conditionallyCreateMapObjectLiteral(
-    keys: {[key: string]: string | string[]}, keepDeclared?: boolean): o.Expression|null {
+    keys: {[key: string]: string|string[]}, keepDeclared?: boolean): o.Expression|null {
   if (Object.getOwnPropertyNames(keys).length > 0) {
     return mapToExpression(keys, keepDeclared);
   }
@@ -90,7 +90,7 @@ export function conditionallyCreateMapObjectLiteral(
 }
 
 function mapToExpression(
-    map: {[key: string]: string | string[]}, keepDeclared?: boolean): o.Expression {
+    map: {[key: string]: string|string[]}, keepDeclared?: boolean): o.Expression {
   return o.literalMap(Object.getOwnPropertyNames(map).map(key => {
     // canonical syntax: `dirProp: publicProp`
     // if there is no `:`, use dirProp = elProp
@@ -153,7 +153,9 @@ export class DefinitionMap {
     }
   }
 
-  toLiteralMap(): o.LiteralMapExpr { return o.literalMap(this.values); }
+  toLiteralMap(): o.LiteralMapExpr {
+    return o.literalMap(this.values);
+  }
 }
 
 /**
@@ -165,8 +167,8 @@ export class DefinitionMap {
  * object maps a property name to its (static) value. For any bindings, this map simply maps the
  * property name to an empty string.
  */
-export function getAttrsForDirectiveMatching(elOrTpl: t.Element | t.Template):
+export function getAttrsForDirectiveMatching(elOrTpl: t.Element|
-    {[name: string]: string} {
+                                             t.Template): {[name: string]: string} {
   const attributesMap: {[name: string]: string} = {};
 
 
@@ -179,8 +181,12 @@ export function getAttrsForDirectiveMatching(elOrTpl: t.Element | t.Template):
       }
     });
 
-    elOrTpl.inputs.forEach(i => { attributesMap[i.name] = ''; });
+    elOrTpl.inputs.forEach(i => {
-    elOrTpl.outputs.forEach(o => { attributesMap[o.name] = ''; });
+      attributesMap[i.name] = '';
+    });
+    elOrTpl.outputs.forEach(o => {
+      attributesMap[o.name] = '';
+    });
   }
 
   return attributesMap;
@@ -188,7 +194,7 @@ export function getAttrsForDirectiveMatching(elOrTpl: t.Element | t.Template):
 
 /** Returns a call expression to a chained instruction, e.g. `property(params[0])(params[1])`. */
 export function chainedInstruction(
-    reference: o.ExternalReference, calls: o.Expression[][], span?: ParseSourceSpan | null) {
+    reference: o.ExternalReference, calls: o.Expression[][], span?: ParseSourceSpan|null) {
   let expression = o.importExpr(reference, null, span) as o.Expression;
 
   if (calls.length > 0) {

packages/compiler/src/resource_loader.ts

@@ -11,5 +11,7 @@
  * to load templates.
  */
 export class ResourceLoader {
-  get(url: string): Promise<string>|string { return ''; }
+  get(url: string): Promise<string>|string {
+    return '';
+  }
 }

packages/compiler/src/schema/dom_element_schema_registry.ts

@@ -253,7 +253,9 @@ export class DomElementSchemaRegistry extends ElementSchemaRegistry {
       typeNames.split(',').forEach(tag => this._schema[tag.toLowerCase()] = type);
       const superType = superName && this._schema[superName.toLowerCase()];
       if (superType) {
-        Object.keys(superType).forEach((prop: string) => { type[prop] = superType[prop]; });
+        Object.keys(superType).forEach((prop: string) => {
+          type[prop] = superType[prop];
+        });
       }
       properties.forEach((property: string) => {
         if (property.length > 0) {
@@ -350,9 +352,13 @@ export class DomElementSchemaRegistry extends ElementSchemaRegistry {
     return ctx ? ctx : SecurityContext.NONE;
   }
 
-  getMappedPropName(propName: string): string { return _ATTR_TO_PROP[propName] || propName; }
+  getMappedPropName(propName: string): string {
+    return _ATTR_TO_PROP[propName] || propName;
+  }
 
-  getDefaultComponentElementName(): string { return 'ng-component'; }
+  getDefaultComponentElementName(): string {
+    return 'ng-component';
+  }
 
   validateProperty(name: string): {error: boolean, msg?: string} {
     if (name.toLowerCase().startsWith('on')) {
@@ -376,7 +382,9 @@ export class DomElementSchemaRegistry extends ElementSchemaRegistry {
     }
   }
 
-  allKnownElementNames(): string[] { return Object.keys(this._schema); }
+  allKnownElementNames(): string[] {
+    return Object.keys(this._schema);
+  }
 
   normalizeAnimationStyleProperty(propName: string): string {
     return dashCaseToCamelCase(propName);
@@ -386,7 +394,7 @@ export class DomElementSchemaRegistry extends ElementSchemaRegistry {
       {error: string, value: string} {
     let unit: string = '';
     const strVal = val.toString().trim();
-    let errorMsg: string = null !;
+    let errorMsg: string = null!;
 
     if (_isPixelDimensionStyle(camelCaseProp) && val !== 0 && val !== '0') {
       if (typeof val === 'number') {

packages/compiler/src/schema/dom_security_schema.ts

@@ -20,7 +20,7 @@ import {SecurityContext} from '../core';
 // =================================================================================================
 
 /** Map from tagName|propertyName SecurityContext. Properties applying to all tags use '*'. */
-let _SECURITY_SCHEMA !: {[k: string]: SecurityContext};
+let _SECURITY_SCHEMA!: {[k: string]: SecurityContext};
 
 export function SECURITY_SCHEMA(): {[k: string]: SecurityContext} {
   if (!_SECURITY_SCHEMA) {

packages/compiler/src/selector.ts

@@ -118,9 +118,13 @@ export class CssSelector {
         this.notSelectors.length === 0;
   }
 
-  hasElementSelector(): boolean { return !!this.element; }
+  hasElementSelector(): boolean {
+    return !!this.element;
+  }
 
-  setElement(element: string|null = null) { this.element = element; }
+  setElement(element: string|null = null) {
+    this.element = element;
+  }
 
   /** Gets a template string for an element that matches the selector. */
   getMatchingElementTemplate(): string {
@@ -150,7 +154,9 @@ export class CssSelector {
     this.attrs.push(name, value && value.toLowerCase() || '');
   }
 
-  addClassName(name: string) { this.classNames.push(name.toLowerCase()); }
+  addClassName(name: string) {
+    this.classNames.push(name.toLowerCase());
+  }
 
   toString(): string {
     let res: string = this.element || '';
@@ -189,7 +195,7 @@ export class SelectorMatcher<T = any> {
   private _listContexts: SelectorListContext[] = [];
 
   addSelectables(cssSelectors: CssSelector[], callbackCtxt?: T) {
-    let listContext: SelectorListContext = null !;
+    let listContext: SelectorListContext = null!;
     if (cssSelectors.length > 1) {
       listContext = new SelectorListContext(cssSelectors);
       this._listContexts.push(listContext);
@@ -287,7 +293,7 @@ export class SelectorMatcher<T = any> {
    */
   match(cssSelector: CssSelector, matchedCallback: ((c: CssSelector, a: T) => void)|null): boolean {
     let result = false;
-    const element = cssSelector.element !;
+    const element = cssSelector.element!;
     const classNames = cssSelector.classNames;
     const attrs = cssSelector.attrs;
 
@@ -315,7 +321,7 @@ export class SelectorMatcher<T = any> {
         const name = attrs[i];
         const value = attrs[i + 1];
 
-        const terminalValuesMap = this._attrValueMap.get(name) !;
+        const terminalValuesMap = this._attrValueMap.get(name)!;
         if (value) {
           result =
               this._matchTerminal(terminalValuesMap, '', cssSelector, matchedCallback) || result;
@@ -323,7 +329,7 @@ export class SelectorMatcher<T = any> {
         result =
             this._matchTerminal(terminalValuesMap, value, cssSelector, matchedCallback) || result;
 
-        const partialValuesMap = this._attrValuePartialMap.get(name) !;
+        const partialValuesMap = this._attrValuePartialMap.get(name)!;
         if (value) {
           result = this._matchPartial(partialValuesMap, '', cssSelector, matchedCallback) || result;
         }
@@ -343,7 +349,7 @@ export class SelectorMatcher<T = any> {
     }
 
     let selectables: SelectorContext<T>[] = map.get(name) || [];
-    const starSelectables: SelectorContext<T>[] = map.get('*') !;
+    const starSelectables: SelectorContext<T>[] = map.get('*')!;
     if (starSelectables) {
       selectables = selectables.concat(starSelectables);
     }

packages/compiler/src/shadow_css.ts

@@ -175,8 +175,9 @@ export class ShadowCss {
    **/
   private _insertPolyfillDirectivesInCssText(cssText: string): string {
     // Difference with webcomponents.js: does not handle comments
-    return cssText.replace(
+    return cssText.replace(_cssContentNextSelectorRe, function(...m: string[]) {
-        _cssContentNextSelectorRe, function(...m: string[]) { return m[2] + '{'; });
+      return m[2] + '{';
+    });
   }
 
   /*
@@ -505,7 +506,9 @@ class SafeSelector {
     return content.replace(/__ph-(\d+)__/g, (ph, index) => this.placeholders[+index]);
   }
 
-  content(): string { return this._content; }
+  content(): string {
+    return this._content;
+  }
 }
 
 const _cssContentNextSelectorRe =

packages/compiler/src/style_compiler.ts

@@ -66,7 +66,7 @@ export class StyleCompiler {
     stylesheet.styleUrls.forEach((styleUrl) => {
       const exprIndex = styleExpressions.length;
       // Note: This placeholder will be filled later.
-      styleExpressions.push(null !);
+      styleExpressions.push(null!);
       dependencies.push(new StylesCompileDependency(
           getStylesVarName(null), styleUrl,
           (value) => styleExpressions[exprIndex] = outputCtx.importExpr(value)));
@@ -89,7 +89,7 @@ export class StyleCompiler {
   }
 }
 
-function getStylesVarName(component: CompileDirectiveMetadata | null): string {
+function getStylesVarName(component: CompileDirectiveMetadata|null): string {
   let result = `styles`;
   if (component) {
     result += `_${identifierName(component.type)}`;

packages/compiler/src/summary_resolver.ts

@@ -28,14 +28,28 @@ export abstract class SummaryResolver<T> {
 export class JitSummaryResolver implements SummaryResolver<Type> {
   private _summaries = new Map<Type, Summary<Type>>();
 
-  isLibraryFile(): boolean { return false; }
+  isLibraryFile(): boolean {
-  toSummaryFileName(fileName: string): string { return fileName; }
+    return false;
-  fromSummaryFileName(fileName: string): string { return fileName; }
+  }
+  toSummaryFileName(fileName: string): string {
+    return fileName;
+  }
+  fromSummaryFileName(fileName: string): string {
+    return fileName;
+  }
   resolveSummary(reference: Type): Summary<Type>|null {
     return this._summaries.get(reference) || null;
   }
-  getSymbolsOf(): Type[] { return []; }
+  getSymbolsOf(): Type[] {
-  getImportAs(reference: Type): Type { return reference; }
+    return [];
-  getKnownModuleName(fileName: string) { return null; }
+  }
-  addSummary(summary: Summary<Type>) { this._summaries.set(summary.symbol, summary); }
+  getImportAs(reference: Type): Type {
+    return reference;
+  }
+  getKnownModuleName(fileName: string) {
+    return null;
+  }
+  addSummary(summary: Summary<Type>) {
+    this._summaries.set(summary.symbol, summary);
+  }
 }

packages/compiler/src/template_parser/binding_parser.ts

@@ -8,7 +8,7 @@
 
 import {CompileDirectiveSummary, CompilePipeSummary} from '../compile_metadata';
 import {SecurityContext} from '../core';
-import {ASTWithSource, AbsoluteSourceSpan, BindingPipe, BindingType, BoundElementProperty, EmptyExpr, ParsedEvent, ParsedEventType, ParsedProperty, ParsedPropertyType, ParsedVariable, ParserError, RecursiveAstVisitor, TemplateBinding, VariableBinding} from '../expression_parser/ast';
+import {AbsoluteSourceSpan, ASTWithSource, BindingPipe, BindingType, BoundElementProperty, EmptyExpr, ParsedEvent, ParsedEventType, ParsedProperty, ParsedPropertyType, ParsedVariable, ParserError, RecursiveAstVisitor, TemplateBinding, VariableBinding} from '../expression_parser/ast';
 import {Parser} from '../expression_parser/parser';
 import {InterpolationConfig} from '../ml_parser/interpolation_config';
 import {mergeNsAndName} from '../ml_parser/tags';
@@ -45,9 +45,13 @@ export class BindingParser {
     }
   }
 
-  get interpolationConfig(): InterpolationConfig { return this._interpolationConfig; }
+  get interpolationConfig(): InterpolationConfig {
+    return this._interpolationConfig;
+  }
 
-  getUsedPipes(): CompilePipeSummary[] { return Array.from(this._usedPipes.values()); }
+  getUsedPipes(): CompilePipeSummary[] {
+    return Array.from(this._usedPipes.values());
+  }
 
   createBoundHostProperties(dirMeta: CompileDirectiveSummary, sourceSpan: ParseSourceSpan):
       ParsedProperty[]|null {
@@ -61,7 +65,9 @@ export class BindingParser {
               boundProps);
         } else {
           this._reportError(
-              `Value of the host property binding "${propName}" needs to be a string representing an expression but got "${expression}" (${typeof expression})`,
+              `Value of the host property binding "${
+                  propName}" needs to be a string representing an expression but got "${
+                  expression}" (${typeof expression})`,
               sourceSpan);
         }
       });
@@ -89,7 +95,9 @@ export class BindingParser {
           this.parseEvent(propName, expression, sourceSpan, sourceSpan, [], targetEvents);
         } else {
           this._reportError(
-              `Value of the host listener "${propName}" needs to be a string representing an expression but got "${expression}" (${typeof expression})`,
+              `Value of the host listener "${
+                  propName}" needs to be a string representing an expression but got "${
+                  expression}" (${typeof expression})`,
               sourceSpan);
         }
       });
@@ -103,7 +111,7 @@ export class BindingParser {
 
     try {
       const ast = this._exprParser.parseInterpolation(
-          value, sourceInfo, sourceSpan.start.offset, this._interpolationConfig) !;
+          value, sourceInfo, sourceSpan.start.offset, this._interpolationConfig)!;
       if (ast) this._reportExpressionParserErrors(ast.errors, sourceSpan);
       this._checkPipes(ast, sourceSpan);
       return ast;
@@ -183,8 +191,9 @@ export class BindingParser {
           this._checkPipes(binding.value, sourceSpan);
         }
       });
-      bindingsResult.warnings.forEach(
+      bindingsResult.warnings.forEach((warning) => {
-          (warning) => { this._reportError(warning, sourceSpan, ParseErrorLevel.WARNING); });
+        this._reportError(warning, sourceSpan, ParseErrorLevel.WARNING);
+      });
       return bindingsResult.templateBindings;
     } catch (e) {
       this._reportError(`${e}`, sourceSpan);
@@ -257,7 +266,7 @@ export class BindingParser {
       name: string, ast: ASTWithSource, sourceSpan: ParseSourceSpan,
       valueSpan: ParseSourceSpan|undefined, targetMatchableAttrs: string[][],
       targetProps: ParsedProperty[]) {
-    targetMatchableAttrs.push([name, ast.source !]);
+    targetMatchableAttrs.push([name, ast.source!]);
     targetProps.push(
         new ParsedProperty(name, ast, ParsedPropertyType.DEFAULT, sourceSpan, valueSpan));
   }
@@ -275,7 +284,7 @@ export class BindingParser {
     // states will be applied by angular when the element is attached/detached
     const ast = this._parseBinding(
         expression || 'undefined', false, valueSpan || sourceSpan, absoluteOffset);
-    targetMatchableAttrs.push([name, ast.source !]);
+    targetMatchableAttrs.push([name, ast.source!]);
     targetProps.push(
         new ParsedProperty(name, ast, ParsedPropertyType.ANIMATION, sourceSpan, valueSpan));
   }
@@ -310,10 +319,10 @@ export class BindingParser {
     }
 
     let unit: string|null = null;
-    let bindingType: BindingType = undefined !;
+    let bindingType: BindingType = undefined!;
     let boundPropertyName: string|null = null;
     const parts = boundProp.name.split(PROPERTY_PARTS_SEPARATOR);
-    let securityContexts: SecurityContext[] = undefined !;
+    let securityContexts: SecurityContext[] = undefined!;
 
     // Check for special cases (prefix style, attr, class)
     if (parts.length > 1) {
@@ -401,13 +410,15 @@ export class BindingParser {
 
         default:
           this._reportError(
-              `The provided animation output phase value "${phase}" for "@${eventName}" is not supported (use start or done)`,
+              `The provided animation output phase value "${phase}" for "@${
+                  eventName}" is not supported (use start or done)`,
               sourceSpan);
           break;
       }
     } else {
       this._reportError(
-          `The animation trigger output event (@${eventName}) is missing its phase value name (start or done are currently supported)`,
+          `The animation trigger output event (@${
+              eventName}) is missing its phase value name (start or done are currently supported)`,
           sourceSpan);
     }
   }
@@ -416,9 +427,9 @@ export class BindingParser {
       name: string, expression: string, sourceSpan: ParseSourceSpan, handlerSpan: ParseSourceSpan,
       targetMatchableAttrs: string[][], targetEvents: ParsedEvent[]) {
     // long format: 'target: eventName'
-    const [target, eventName] = splitAtColon(name, [null !, name]);
+    const [target, eventName] = splitAtColon(name, [null!, name]);
     const ast = this._parseAction(expression, handlerSpan);
-    targetMatchableAttrs.push([name !, ast.source !]);
+    targetMatchableAttrs.push([name!, ast.source!]);
     targetEvents.push(
         new ParsedEvent(eventName, target, ParsedEventType.Regular, ast, sourceSpan, handlerSpan));
     // Don't detect directives for event names for now,
@@ -465,7 +476,7 @@ export class BindingParser {
       const collector = new PipeCollector();
       ast.visit(collector);
       collector.pipes.forEach((ast, pipeName) => {
-        const pipeMeta = this.pipesByName !.get(pipeName);
+        const pipeMeta = this.pipesByName!.get(pipeName);
         if (!pipeMeta) {
           this._reportError(
               `The pipe '${pipeName}' could not be found`,
@@ -488,7 +499,7 @@ export class BindingParser {
     const report = isAttr ? this._schemaRegistry.validateAttribute(propName) :
                             this._schemaRegistry.validateProperty(propName);
     if (report.error) {
-      this._reportError(report.msg !, sourceSpan, ParseErrorLevel.ERROR);
+      this._reportError(report.msg!, sourceSpan, ParseErrorLevel.ERROR);
     }
   }
 }

packages/compiler/src/template_parser/template_ast.ts

@@ -36,7 +36,9 @@ export interface TemplateAst {
 export class TextAst implements TemplateAst {
   constructor(
       public value: string, public ngContentIndex: number, public sourceSpan: ParseSourceSpan) {}
-  visit(visitor: TemplateAstVisitor, context: any): any { return visitor.visitText(this, context); }
+  visit(visitor: TemplateAstVisitor, context: any): any {
+    return visitor.visitText(this, context);
+  }
 }
 
 /**
@@ -56,7 +58,9 @@ export class BoundTextAst implements TemplateAst {
  */
 export class AttrAst implements TemplateAst {
   constructor(public name: string, public value: string, public sourceSpan: ParseSourceSpan) {}
-  visit(visitor: TemplateAstVisitor, context: any): any { return visitor.visitAttr(this, context); }
+  visit(visitor: TemplateAstVisitor, context: any): any {
+    return visitor.visitAttr(this, context);
+  }
 }
 
 export const enum PropertyBindingType {
@@ -319,7 +323,9 @@ export class NullTemplateVisitor implements TemplateAstVisitor {
  * in an template ast recursively.
  */
 export class RecursiveTemplateAstVisitor extends NullTemplateVisitor implements TemplateAstVisitor {
-  constructor() { super(); }
+  constructor() {
+    super();
+  }
 
   // Nodes with children
   visitEmbeddedTemplate(ast: EmbeddedTemplateAst, context: any): any {
@@ -358,7 +364,7 @@ export class RecursiveTemplateAstVisitor extends NullTemplateVisitor implements
       cb: (visit: (<V extends TemplateAst>(children: V[]|undefined) => void)) => void) {
     let results: any[][] = [];
     let t = this;
-    function visit<T extends TemplateAst>(children: T[] | undefined) {
+    function visit<T extends TemplateAst>(children: T[]|undefined) {
       if (children && children.length) results.push(templateVisitAll(t, children, context));
     }
     cb(visit);
@@ -373,7 +379,7 @@ export function templateVisitAll(
     visitor: TemplateAstVisitor, asts: TemplateAst[], context: any = null): any[] {
   const result: any[] = [];
   const visit = visitor.visit ?
-      (ast: TemplateAst) => visitor.visit !(ast, context) || ast.visit(visitor, context) :
+      (ast: TemplateAst) => visitor.visit!(ast, context) || ast.visit(visitor, context) :
       (ast: TemplateAst) => ast.visit(visitor, context);
   asts.forEach(ast => {
     const astResult = visit(ast);

packages/compiler/src/template_parser/template_parser.ts

@@ -12,7 +12,7 @@ import {CompilerConfig} from '../config';
 import {SchemaMetadata} from '../core';
 import {AST, ASTWithSource, EmptyExpr, ParsedEvent, ParsedProperty, ParsedVariable} from '../expression_parser/ast';
 import {Parser} from '../expression_parser/parser';
-import {Identifiers, createTokenForExternalReference, createTokenForReference} from '../identifiers';
+import {createTokenForExternalReference, createTokenForReference, Identifiers} from '../identifiers';
 import * as html from '../ml_parser/ast';
 import {HtmlParser, ParseTreeResult} from '../ml_parser/html_parser';
 import {removeWhitespaces, replaceNgsp} from '../ml_parser/html_whitespaces';
@@ -57,7 +57,7 @@ const IDENT_EVENT_IDX = 10;
 const TEMPLATE_ATTR_PREFIX = '*';
 const CLASS_ATTR = 'class';
 
-let _TEXT_CSS_SELECTOR !: CssSelector;
+let _TEXT_CSS_SELECTOR!: CssSelector;
 function TEXT_CSS_SELECTOR(): CssSelector {
   if (!_TEXT_CSS_SELECTOR) {
     _TEXT_CSS_SELECTOR = CssSelector.parse('*')[0];
@@ -84,7 +84,9 @@ export class TemplateParser {
       private _htmlParser: HtmlParser, private _console: Console,
       public transforms: t.TemplateAstVisitor[]) {}
 
-  public get expressionParser() { return this._exprParser; }
+  public get expressionParser() {
+    return this._exprParser;
+  }
 
   parse(
       component: CompileDirectiveMetadata, template: string|ParseTreeResult,
@@ -93,9 +95,9 @@ export class TemplateParser {
       preserveWhitespaces: boolean): {template: t.TemplateAst[], pipes: CompilePipeSummary[]} {
     const result = this.tryParse(
         component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces);
-    const warnings = result.errors !.filter(error => error.level === ParseErrorLevel.WARNING);
+    const warnings = result.errors!.filter(error => error.level === ParseErrorLevel.WARNING);
 
-    const errors = result.errors !.filter(error => error.level === ParseErrorLevel.ERROR);
+    const errors = result.errors!.filter(error => error.level === ParseErrorLevel.ERROR);
 
     if (warnings.length > 0) {
       this._console.warn(`Template parse warnings:\n${warnings.join('\n')}`);
@@ -106,7 +108,7 @@ export class TemplateParser {
       throw syntaxError(`Template parse errors:\n${errorString}`, errors);
     }
 
-    return {template: result.templateAst !, pipes: result.usedPipes !};
+    return {template: result.templateAst!, pipes: result.usedPipes!};
   }
 
   tryParse(
@@ -114,7 +116,7 @@ export class TemplateParser {
       directives: CompileDirectiveSummary[], pipes: CompilePipeSummary[], schemas: SchemaMetadata[],
       templateUrl: string, preserveWhitespaces: boolean): TemplateParseResult {
     let htmlParseResult = typeof template === 'string' ?
-        this._htmlParser !.parse(template, templateUrl, {
+        this._htmlParser!.parse(template, templateUrl, {
           tokenizeExpansionForms: true,
           interpolationConfig: this.getInterpolationConfig(component)
         }) :
@@ -139,7 +141,7 @@ export class TemplateParser {
       const uniqDirectives = removeSummaryDuplicates(directives);
       const uniqPipes = removeSummaryDuplicates(pipes);
       const providerViewContext = new ProviderViewContext(this._reflector, component);
-      let interpolationConfig: InterpolationConfig = undefined !;
+      let interpolationConfig: InterpolationConfig = undefined!;
       if (component.template && component.template.interpolation) {
         interpolationConfig = {
           start: component.template.interpolation[0],
@@ -147,7 +149,7 @@ export class TemplateParser {
         };
       }
       const bindingParser = new BindingParser(
-          this._exprParser, interpolationConfig !, this._schemaRegistry, uniqPipes, errors);
+          this._exprParser, interpolationConfig!, this._schemaRegistry, uniqPipes, errors);
       const parseVisitor = new TemplateParseVisitor(
           this._reflector, this._config, providerViewContext, uniqDirectives, bindingParser,
           this._schemaRegistry, schemas, errors);
@@ -164,8 +166,9 @@ export class TemplateParser {
     }
 
     if (this.transforms) {
-      this.transforms.forEach(
+      this.transforms.forEach((transform: t.TemplateAstVisitor) => {
-          (transform: t.TemplateAstVisitor) => { result = t.templateVisitAll(transform, result); });
+        result = t.templateVisitAll(transform, result);
+      });
     }
 
     return new TemplateParseResult(result, usedPipes, errors);
@@ -224,29 +227,35 @@ class TemplateParseVisitor implements html.Visitor {
     // Note: queries start with id 1 so we can use the number in a Bloom filter!
     this.contentQueryStartId = providerViewContext.component.viewQueries.length + 1;
     directives.forEach((directive, index) => {
-      const selector = CssSelector.parse(directive.selector !);
+      const selector = CssSelector.parse(directive.selector!);
       this.selectorMatcher.addSelectables(selector, directive);
       this.directivesIndex.set(directive, index);
     });
   }
 
-  visitExpansion(expansion: html.Expansion, context: any): any { return null; }
+  visitExpansion(expansion: html.Expansion, context: any): any {
+    return null;
+  }
 
-  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any { return null; }
+  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any {
+    return null;
+  }
 
   visitText(text: html.Text, parent: ElementContext): any {
-    const ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR()) !;
+    const ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR())!;
     const valueNoNgsp = replaceNgsp(text.value);
-    const expr = this._bindingParser.parseInterpolation(valueNoNgsp, text.sourceSpan !);
+    const expr = this._bindingParser.parseInterpolation(valueNoNgsp, text.sourceSpan!);
-    return expr ? new t.BoundTextAst(expr, ngContentIndex, text.sourceSpan !) :
+    return expr ? new t.BoundTextAst(expr, ngContentIndex, text.sourceSpan!) :
-                  new t.TextAst(valueNoNgsp, ngContentIndex, text.sourceSpan !);
+                  new t.TextAst(valueNoNgsp, ngContentIndex, text.sourceSpan!);
   }
 
   visitAttribute(attribute: html.Attribute, context: any): any {
     return new t.AttrAst(attribute.name, attribute.value, attribute.sourceSpan);
   }
 
-  visitComment(comment: html.Comment, context: any): any { return null; }
+  visitComment(comment: html.Comment, context: any): any {
+    return null;
+  }
 
   visitElement(element: html.Element, parent: ElementContext): any {
     const queryStartIndex = this.contentQueryStartId;
@@ -307,7 +316,7 @@ class TemplateParseVisitor implements html.Visitor {
         const parsedVariables: ParsedVariable[] = [];
         const absoluteOffset = (attr.valueSpan || attr.sourceSpan).start.offset;
         this._bindingParser.parseInlineTemplateBinding(
-            templateKey !, templateValue !, attr.sourceSpan, absoluteOffset, templateMatchableAttrs,
+            templateKey!, templateValue!, attr.sourceSpan, absoluteOffset, templateMatchableAttrs,
             templateElementOrDirectiveProps, parsedVariables);
         templateElementVars.push(...parsedVariables.map(v => t.VariableAst.fromParsedVariable(v)));
       }
@@ -326,52 +335,51 @@ class TemplateParseVisitor implements html.Visitor {
     const boundDirectivePropNames = new Set<string>();
     const directiveAsts = this._createDirectiveAsts(
         isTemplateElement, element.name, directiveMetas, elementOrDirectiveProps,
-        elementOrDirectiveRefs, element.sourceSpan !, references, boundDirectivePropNames);
+        elementOrDirectiveRefs, element.sourceSpan!, references, boundDirectivePropNames);
     const elementProps: t.BoundElementPropertyAst[] = this._createElementPropertyAsts(
         element.name, elementOrDirectiveProps, boundDirectivePropNames);
     const isViewRoot = parent.isTemplateElement || hasInlineTemplates;
 
     const providerContext = new ProviderElementContext(
-        this.providerViewContext, parent.providerContext !, isViewRoot, directiveAsts, attrs,
+        this.providerViewContext, parent.providerContext!, isViewRoot, directiveAsts, attrs,
-        references, isTemplateElement, queryStartIndex, element.sourceSpan !);
+        references, isTemplateElement, queryStartIndex, element.sourceSpan!);
 
     const children: t.TemplateAst[] = html.visitAll(
         preparsedElement.nonBindable ? NON_BINDABLE_VISITOR : this, element.children,
         ElementContext.create(
             isTemplateElement, directiveAsts,
-            isTemplateElement ? parent.providerContext ! : providerContext));
+            isTemplateElement ? parent.providerContext! : providerContext));
     providerContext.afterElement();
     // Override the actual selector when the `ngProjectAs` attribute is provided
     const projectionSelector = preparsedElement.projectAs != '' ?
         CssSelector.parse(preparsedElement.projectAs)[0] :
         elementCssSelector;
-    const ngContentIndex = parent.findNgContentIndex(projectionSelector) !;
+    const ngContentIndex = parent.findNgContentIndex(projectionSelector)!;
     let parsedElement: t.TemplateAst;
 
     if (preparsedElement.type === PreparsedElementType.NG_CONTENT) {
       // `<ng-content>` element
       if (element.children && !element.children.every(_isEmptyTextNode)) {
-        this._reportError(`<ng-content> element cannot have content.`, element.sourceSpan !);
+        this._reportError(`<ng-content> element cannot have content.`, element.sourceSpan!);
       }
 
       parsedElement = new t.NgContentAst(
-          this.ngContentCount++, hasInlineTemplates ? null ! : ngContentIndex,
+          this.ngContentCount++, hasInlineTemplates ? null! : ngContentIndex, element.sourceSpan!);
-          element.sourceSpan !);
     } else if (isTemplateElement) {
       // `<ng-template>` element
       this._assertAllEventsPublishedByDirectives(directiveAsts, events);
       this._assertNoComponentsNorElementBindingsOnTemplate(
-          directiveAsts, elementProps, element.sourceSpan !);
+          directiveAsts, elementProps, element.sourceSpan!);
 
       parsedElement = new t.EmbeddedTemplateAst(
           attrs, events, references, elementVars, providerContext.transformedDirectiveAsts,
           providerContext.transformProviders, providerContext.transformedHasViewContainer,
-          providerContext.queryMatches, children, hasInlineTemplates ? null ! : ngContentIndex,
+          providerContext.queryMatches, children, hasInlineTemplates ? null! : ngContentIndex,
-          element.sourceSpan !);
+          element.sourceSpan!);
     } else {
       // element other than `<ng-content>` and `<ng-template>`
       this._assertElementExists(matchElement, element);
-      this._assertOnlyOneComponent(directiveAsts, element.sourceSpan !);
+      this._assertOnlyOneComponent(directiveAsts, element.sourceSpan!);
 
       const ngContentIndex =
           hasInlineTemplates ? null : parent.findNgContentIndex(projectionSelector);
@@ -389,22 +397,22 @@ class TemplateParseVisitor implements html.Visitor {
       const {directives} = this._parseDirectives(this.selectorMatcher, templateSelector);
       const templateBoundDirectivePropNames = new Set<string>();
       const templateDirectiveAsts = this._createDirectiveAsts(
-          true, elName, directives, templateElementOrDirectiveProps, [], element.sourceSpan !, [],
+          true, elName, directives, templateElementOrDirectiveProps, [], element.sourceSpan!, [],
           templateBoundDirectivePropNames);
       const templateElementProps: t.BoundElementPropertyAst[] = this._createElementPropertyAsts(
           elName, templateElementOrDirectiveProps, templateBoundDirectivePropNames);
       this._assertNoComponentsNorElementBindingsOnTemplate(
-          templateDirectiveAsts, templateElementProps, element.sourceSpan !);
+          templateDirectiveAsts, templateElementProps, element.sourceSpan!);
       const templateProviderContext = new ProviderElementContext(
-          this.providerViewContext, parent.providerContext !, parent.isTemplateElement,
+          this.providerViewContext, parent.providerContext!, parent.isTemplateElement,
-          templateDirectiveAsts, [], [], true, templateQueryStartIndex, element.sourceSpan !);
+          templateDirectiveAsts, [], [], true, templateQueryStartIndex, element.sourceSpan!);
       templateProviderContext.afterElement();
 
       parsedElement = new t.EmbeddedTemplateAst(
           [], [], [], templateElementVars, templateProviderContext.transformedDirectiveAsts,
           templateProviderContext.transformProviders,
           templateProviderContext.transformedHasViewContainer, templateProviderContext.queryMatches,
-          [parsedElement], ngContentIndex, element.sourceSpan !);
+          [parsedElement], ngContentIndex, element.sourceSpan!);
     }
 
     return parsedElement;
@@ -538,7 +546,7 @@ class TemplateParseVisitor implements html.Visitor {
     let matchElement = false;
 
     selectorMatcher.match(elementCssSelector, (selector, directive) => {
-      directives[this.directivesIndex.get(directive) !] = directive;
+      directives[this.directivesIndex.get(directive)!] = directive;
       matchElement = matchElement || selector.hasElementSelector();
     });
 
@@ -554,7 +562,7 @@ class TemplateParseVisitor implements html.Visitor {
       elementSourceSpan: ParseSourceSpan, targetReferences: t.ReferenceAst[],
       targetBoundDirectivePropNames: Set<string>): t.DirectiveAst[] {
     const matchedReferences = new Set<string>();
-    let component: CompileDirectiveSummary = null !;
+    let component: CompileDirectiveSummary = null!;
 
     const directiveAsts = directives.map((directive) => {
       const sourceSpan = new ParseSourceSpan(
@@ -566,15 +574,14 @@ class TemplateParseVisitor implements html.Visitor {
       }
       const directiveProperties: t.BoundDirectivePropertyAst[] = [];
       const boundProperties =
-          this._bindingParser.createDirectiveHostPropertyAsts(directive, elementName, sourceSpan) !;
+          this._bindingParser.createDirectiveHostPropertyAsts(directive, elementName, sourceSpan)!;
 
       let hostProperties =
           boundProperties.map(prop => t.BoundElementPropertyAst.fromBoundProperty(prop));
       // Note: We need to check the host properties here as well,
       // as we don't know the element name in the DirectiveWrapperCompiler yet.
       hostProperties = this._checkPropertiesInSchema(elementName, hostProperties);
-      const parsedEvents =
+      const parsedEvents = this._bindingParser.createDirectiveHostEventAsts(directive, sourceSpan)!;
-          this._bindingParser.createDirectiveHostEventAsts(directive, sourceSpan) !;
       this._createDirectivePropertyAsts(
           directive.inputs, props, directiveProperties, targetBoundDirectivePropNames);
       elementOrDirectiveRefs.forEach((elOrDirRef) => {
@@ -602,7 +609,7 @@ class TemplateParseVisitor implements html.Visitor {
               elOrDirRef.sourceSpan);
         }
       } else if (!component) {
-        let refToken: CompileTokenMetadata = null !;
+        let refToken: CompileTokenMetadata = null!;
         if (isTemplateElement) {
           refToken = createTokenForExternalReference(this.reflector, Identifiers.TemplateRef);
         }
@@ -663,7 +670,7 @@ class TemplateParseVisitor implements html.Visitor {
 
   private _findComponentDirectiveNames(directives: t.DirectiveAst[]): string[] {
     return this._findComponentDirectives(directives)
-        .map(directive => identifierName(directive.directive.type) !);
+        .map(directive => identifierName(directive.directive.type)!);
   }
 
   private _assertOnlyOneComponent(directives: t.DirectiveAst[], sourceSpan: ParseSourceSpan) {
@@ -691,16 +698,16 @@ class TemplateParseVisitor implements html.Visitor {
 
     if (!matchElement && !this._schemaRegistry.hasElement(elName, this._schemas)) {
       let errorMsg = `'${elName}' is not a known element:\n`;
-      errorMsg +=
+      errorMsg += `1. If '${
-          `1. If '${elName}' is an Angular component, then verify that it is part of this module.\n`;
+          elName}' is an Angular component, then verify that it is part of this module.\n`;
       if (elName.indexOf('-') > -1) {
-        errorMsg +=
+        errorMsg += `2. If '${
-            `2. If '${elName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.`;
+            elName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.`;
       } else {
         errorMsg +=
             `2. To allow any element add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.`;
       }
-      this._reportError(errorMsg, element.sourceSpan !);
+      this._reportError(errorMsg, element.sourceSpan!);
     }
   }
 
@@ -714,7 +721,8 @@ class TemplateParseVisitor implements html.Visitor {
     }
     elementProps.forEach(prop => {
       this._reportError(
-          `Property binding ${prop.name} not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations".`,
+          `Property binding ${
+              prop.name} not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations".`,
           sourceSpan);
     });
   }
@@ -733,7 +741,9 @@ class TemplateParseVisitor implements html.Visitor {
     events.forEach(event => {
       if (event.target != null || !allDirectiveEvents.has(event.name)) {
         this._reportError(
-            `Event binding ${event.fullName} not emitted by any directive on an embedded template. Make sure that the event name is spelled correctly and all directives are listed in the "@NgModule.declarations".`,
+            `Event binding ${
+                event
+                    .fullName} not emitted by any directive on an embedded template. Make sure that the event name is spelled correctly and all directives are listed in the "@NgModule.declarations".`,
             event.sourceSpan);
       }
     });
@@ -746,16 +756,20 @@ class TemplateParseVisitor implements html.Visitor {
     return boundProps.filter((boundProp) => {
       if (boundProp.type === t.PropertyBindingType.Property &&
           !this._schemaRegistry.hasProperty(elementName, boundProp.name, this._schemas)) {
-        let errorMsg =
+        let errorMsg = `Can't bind to '${boundProp.name}' since it isn't a known property of '${
-            `Can't bind to '${boundProp.name}' since it isn't a known property of '${elementName}'.`;
+            elementName}'.`;
         if (elementName.startsWith('ng-')) {
           errorMsg +=
-              `\n1. If '${boundProp.name}' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.` +
+              `\n1. If '${
+                  boundProp
+                      .name}' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.` +
               `\n2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.`;
         } else if (elementName.indexOf('-') > -1) {
           errorMsg +=
-              `\n1. If '${elementName}' is an Angular component and it has '${boundProp.name}' input, then verify that it is part of this module.` +
+              `\n1. If '${elementName}' is an Angular component and it has '${
-              `\n2. If '${elementName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.` +
+                  boundProp.name}' input, then verify that it is part of this module.` +
+              `\n2. If '${
+                  elementName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.` +
               `\n3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.`;
         }
         this._reportError(errorMsg, boundProp.sourceSpan);
@@ -791,20 +805,26 @@ class NonBindableVisitor implements html.Visitor {
         ast.name, html.visitAll(this, ast.attrs), [], [], [], [], [], false, [], children,
         ngContentIndex, ast.sourceSpan, ast.endSourceSpan);
   }
-  visitComment(comment: html.Comment, context: any): any { return null; }
+  visitComment(comment: html.Comment, context: any): any {
+    return null;
+  }
 
   visitAttribute(attribute: html.Attribute, context: any): t.AttrAst {
     return new t.AttrAst(attribute.name, attribute.value, attribute.sourceSpan);
   }
 
   visitText(text: html.Text, parent: ElementContext): t.TextAst {
-    const ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR()) !;
+    const ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR())!;
-    return new t.TextAst(text.value, ngContentIndex, text.sourceSpan !);
+    return new t.TextAst(text.value, ngContentIndex, text.sourceSpan!);
   }
 
-  visitExpansion(expansion: html.Expansion, context: any): any { return expansion; }
+  visitExpansion(expansion: html.Expansion, context: any): any {
+    return expansion;
+  }
 
-  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any { return expansionCase; }
+  visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any {
+    return expansionCase;
+  }
 }
 
 /**
@@ -824,7 +844,7 @@ class ElementOrDirectiveRef {
 }
 
 /** Splits a raw, potentially comma-delimited `exportAs` value into an array of names. */
-function splitExportAs(exportAs: string | null): string[] {
+function splitExportAs(exportAs: string|null): string[] {
   return exportAs ? exportAs.split(',').map(e => e.trim()) : [];
 }
 
@@ -837,7 +857,7 @@ class ElementContext {
       isTemplateElement: boolean, directives: t.DirectiveAst[],
       providerContext: ProviderElementContext): ElementContext {
     const matcher = new SelectorMatcher();
-    let wildcardNgContentIndex: number = null !;
+    let wildcardNgContentIndex: number = null!;
     const component = directives.find(directive => directive.directive.isComponent);
     if (component) {
       const ngContentSelectors = component.directive.template !.ngContentSelectors;
@@ -859,8 +879,9 @@ class ElementContext {
 
   findNgContentIndex(selector: CssSelector): number|null {
     const ngContentIndices: number[] = [];
-    this._ngContentIndexMatcher.match(
+    this._ngContentIndexMatcher.match(selector, (selector, ngContentIndex) => {
-        selector, (selector, ngContentIndex) => { ngContentIndices.push(ngContentIndex); });
+      ngContentIndices.push(ngContentIndex);
+    });
     ngContentIndices.sort();
     if (this._wildcardNgContentIndex != null) {
       ngContentIndices.push(this._wildcardNgContentIndex);
@@ -897,7 +918,7 @@ function _isEmptyTextNode(node: html.Node): boolean {
   return node instanceof html.Text && node.value.trim().length == 0;
 }
 
-export function removeSummaryDuplicates<T extends{type: CompileTypeMetadata}>(items: T[]): T[] {
+export function removeSummaryDuplicates<T extends {type: CompileTypeMetadata}>(items: T[]): T[] {
   const map = new Map<any, T>();
 
   items.forEach((item) => {

packages/compiler/src/template_parser/template_preparser.ts

@@ -20,9 +20,9 @@ const NG_NON_BINDABLE_ATTR = 'ngNonBindable';
 const NG_PROJECT_AS = 'ngProjectAs';
 
 export function preparseElement(ast: html.Element): PreparsedElement {
-  let selectAttr: string = null !;
+  let selectAttr: string = null!;
-  let hrefAttr: string = null !;
+  let hrefAttr: string = null!;
-  let relAttr: string = null !;
+  let relAttr: string = null!;
   let nonBindable = false;
   let projectAs = '';
   ast.attrs.forEach(attr => {