fix(language-service): Update types for TypeScript nullability support

packages/compiler/src/i18n/extractor_merger.ts

@@ -111,7 +111,7 @@ 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);
 

packages/compiler/src/ml_parser/ast.ts

@@ -9,12 +9,12 @@
 import {ParseSourceSpan} from '../parse_util';
 
 export interface Node {
-  sourceSpan: ParseSourceSpan|null;
+  sourceSpan: ParseSourceSpan;
   visit(visitor: Visitor, context: any): any;
 }
 
 export class Text implements Node {
-  constructor(public value: string, public sourceSpan: ParseSourceSpan|null) {}
+  constructor(public value: string, public sourceSpan: ParseSourceSpan) {}
   visit(visitor: Visitor, context: any): any { return visitor.visitText(this, context); }
 }
 
@@ -43,8 +43,7 @@ export class Attribute implements Node {
 export class Element implements Node {
   constructor(
       public name: string, public attrs: Attribute[], public children: Node[],
-      public sourceSpan: ParseSourceSpan|null = null,
-      public startSourceSpan: ParseSourceSpan|null = null,
+      public sourceSpan: ParseSourceSpan, public startSourceSpan: ParseSourceSpan|null = null,
       public endSourceSpan: ParseSourceSpan|null = null) {}
   visit(visitor: Visitor, context: any): any { return visitor.visitElement(this, context); }
 }

packages/compiler/src/template_parser/template_ast.ts

@@ -19,7 +19,7 @@ export interface TemplateAst {
   /**
    * The source span from which this node was parsed.
    */
-  sourceSpan: ParseSourceSpan|null;
+  sourceSpan: ParseSourceSpan;
 
   /**
    * Visit this node and possibly transform it.
@@ -127,7 +127,7 @@ export class ElementAst implements TemplateAst {
       public directives: DirectiveAst[], public providers: ProviderAst[],
       public hasViewContainer: boolean, public queryMatches: QueryMatch[],
       public children: TemplateAst[], public ngContentIndex: number|null,
-      public sourceSpan: ParseSourceSpan|null, public endSourceSpan: ParseSourceSpan|null) {}
+      public sourceSpan: ParseSourceSpan, public endSourceSpan: ParseSourceSpan|null) {}
 
   visit(visitor: TemplateAstVisitor, context: any): any {
     return visitor.visitElement(this, context);

packages/compiler/src/template_parser/template_parser.ts

@@ -391,7 +391,7 @@ class TemplateParseVisitor implements html.Visitor {
           nodeName, attrs, elementProps, events, references,
           providerContext.transformedDirectiveAsts, providerContext.transformProviders,
           providerContext.transformedHasViewContainer, providerContext.queryMatches, children,
-          hasInlineTemplates ? null : ngContentIndex, element.sourceSpan || null,
+          hasInlineTemplates ? null : ngContentIndex, element.sourceSpan,
           element.endSourceSpan || null);
     }