diff --git a/modules/@angular/benchpress/test/sampler_spec.ts b/modules/@angular/benchpress/test/sampler_spec.ts
index 2f6bc0ad12..f93bc35f4c 100644
--- a/modules/@angular/benchpress/test/sampler_spec.ts
+++ b/modules/@angular/benchpress/test/sampler_spec.ts
@@ -212,7 +212,7 @@ function createCountingValidator(
   return new MockValidator(log, (completeSample: MeasureValues[]) => {
     count--;
     if (count === 0) {
-      return isPresent(validSample) ? validSample : completeSample;
+      return validSample || completeSample;
     } else {
       return null;
     }
diff --git a/modules/@angular/compiler/src/compile_metadata.ts b/modules/@angular/compiler/src/compile_metadata.ts
index a067044c63..9d5ae9c1da 100644
--- a/modules/@angular/compiler/src/compile_metadata.ts
+++ b/modules/@angular/compiler/src/compile_metadata.ts
@@ -304,7 +304,7 @@ export class CompileTemplateMetadata {
     this.styleUrls = _normalizeArray(styleUrls);
     this.externalStylesheets = _normalizeArray(externalStylesheets);
     this.animations = isPresent(animations) ? ListWrapper.flatten(animations) : [];
-    this.ngContentSelectors = isPresent(ngContentSelectors) ? ngContentSelectors : [];
+    this.ngContentSelectors = ngContentSelectors || [];
     if (isPresent(interpolation) && interpolation.length != 2) {
       throw new Error(`'interpolation' should have a start and an end symbol.`);
     }
@@ -590,7 +590,7 @@ export function removeIdentifierDuplicates<T extends CompileMetadataWithIdentifi
 }
 
 function _normalizeArray(obj: any[]): any[] {
-  return isPresent(obj) ? obj : [];
+  return obj || [];
 }
 
 export function isStaticSymbol(value: any): value is StaticSymbol {
diff --git a/modules/@angular/compiler/src/css_parser/css_lexer.ts b/modules/@angular/compiler/src/css_parser/css_lexer.ts
index dc690a33ce..5dfc96c1c4 100644
--- a/modules/@angular/compiler/src/css_parser/css_lexer.ts
+++ b/modules/@angular/compiler/src/css_parser/css_lexer.ts
@@ -476,7 +476,7 @@ export class CssScanner {
     var index: number = this.index;
     var column: number = this.column;
     var line: number = this.line;
-    errorTokenValue = isPresent(errorTokenValue) ? errorTokenValue : String.fromCharCode(this.peek);
+    errorTokenValue = errorTokenValue || String.fromCharCode(this.peek);
     var invalidToken = new CssToken(index, column, line, CssTokenType.Invalid, errorTokenValue);
     var errorMessage =
         generateErrorMessage(this.input, message, errorTokenValue, index, line, column);
diff --git a/modules/@angular/compiler/src/ng_module_compiler.ts b/modules/@angular/compiler/src/ng_module_compiler.ts
index 480ee0fadf..3573247cb9 100644
--- a/modules/@angular/compiler/src/ng_module_compiler.ts
+++ b/modules/@angular/compiler/src/ng_module_compiler.ts
@@ -163,11 +163,11 @@ class _InjectorBuilder {
     if (isPresent(provider.useExisting)) {
       result = this._getDependency(new CompileDiDependencyMetadata({token: provider.useExisting}));
     } else if (isPresent(provider.useFactory)) {
-      var deps = isPresent(provider.deps) ? provider.deps : provider.useFactory.diDeps;
+      var deps = provider.deps || provider.useFactory.diDeps;
       var depsExpr = deps.map((dep) => this._getDependency(dep));
       result = o.importExpr(provider.useFactory).callFn(depsExpr);
     } else if (isPresent(provider.useClass)) {
-      var deps = isPresent(provider.deps) ? provider.deps : provider.useClass.diDeps;
+      var deps = provider.deps || provider.useClass.diDeps;
       var depsExpr = deps.map((dep) => this._getDependency(dep));
       result =
           o.importExpr(provider.useClass).instantiate(depsExpr, o.importType(provider.useClass));
diff --git a/modules/@angular/compiler/src/output/output_ast.ts b/modules/@angular/compiler/src/output/output_ast.ts
index e7ef4f80cb..08c4c90d7c 100644
--- a/modules/@angular/compiler/src/output/output_ast.ts
+++ b/modules/@angular/compiler/src/output/output_ast.ts
@@ -215,7 +215,7 @@ export class ReadVarExpr extends Expression {
 export class WriteVarExpr extends Expression {
   public value: Expression;
   constructor(public name: string, value: Expression, type: Type = null) {
-    super(isPresent(type) ? type : value.type);
+    super(type || value.type);
     this.value = value;
   }
 
@@ -233,7 +233,7 @@ export class WriteKeyExpr extends Expression {
   public value: Expression;
   constructor(
       public receiver: Expression, public index: Expression, value: Expression, type: Type = null) {
-    super(isPresent(type) ? type : value.type);
+    super(type || value.type);
     this.value = value;
   }
   visitExpression(visitor: ExpressionVisitor, context: any): any {
@@ -246,7 +246,7 @@ export class WritePropExpr extends Expression {
   public value: Expression;
   constructor(
       public receiver: Expression, public name: string, value: Expression, type: Type = null) {
-    super(isPresent(type) ? type : value.type);
+    super(type || value.type);
     this.value = value;
   }
   visitExpression(visitor: ExpressionVisitor, context: any): any {
@@ -322,7 +322,7 @@ export class ConditionalExpr extends Expression {
   constructor(
       public condition: Expression, trueCase: Expression, public falseCase: Expression = null,
       type: Type = null) {
-    super(isPresent(type) ? type : trueCase.type);
+    super(type || trueCase.type);
     this.trueCase = trueCase;
   }
   visitExpression(visitor: ExpressionVisitor, context: any): any {
@@ -369,7 +369,7 @@ export class BinaryOperatorExpr extends Expression {
   public lhs: Expression;
   constructor(
       public operator: BinaryOperator, lhs: Expression, public rhs: Expression, type: Type = null) {
-    super(isPresent(type) ? type : lhs.type);
+    super(type || lhs.type);
     this.lhs = lhs;
   }
   visitExpression(visitor: ExpressionVisitor, context: any): any {
@@ -479,7 +479,7 @@ export class DeclareVarStmt extends Statement {
       public name: string, public value: Expression, type: Type = null,
       modifiers: StmtModifier[] = null) {
     super(modifiers);
-    this.type = isPresent(type) ? type : value.type;
+    this.type = type || value.type;
   }
 
   visitStatement(visitor: StatementVisitor, context: any): any {
@@ -625,7 +625,7 @@ export class ExpressionTransformer implements StatementVisitor, ExpressionVisito
         expr.value.visitExpression(this, context));
   }
   visitInvokeMethodExpr(ast: InvokeMethodExpr, context: any): any {
-    var method = isPresent(ast.builtin) ? ast.builtin : ast.name;
+    var method = ast.builtin || ast.name;
     return new InvokeMethodExpr(
         ast.receiver.visitExpression(this, context), method,
         this.visitAllExpressions(ast.args, context), ast.type);
diff --git a/modules/@angular/compiler/src/provider_analyzer.ts b/modules/@angular/compiler/src/provider_analyzer.ts
index f1c2901d99..3a4c5ffbdd 100644
--- a/modules/@angular/compiler/src/provider_analyzer.ts
+++ b/modules/@angular/compiler/src/provider_analyzer.ts
@@ -102,7 +102,7 @@ export class ProviderElementContext {
 
   private _addQueryReadsTo(token: CompileTokenMetadata, queryReadTokens: Map<any, boolean>) {
     this._getQueriesFor(token).forEach((query) => {
-      const queryReadToken = isPresent(query.read) ? query.read : token;
+      const queryReadToken = query.read || token;
       if (isBlank(queryReadTokens.get(queryReadToken.reference))) {
         queryReadTokens.set(queryReadToken.reference, true);
       }
@@ -169,11 +169,11 @@ export class ProviderElementContext {
           transformedUseValue = existingDiDep.value;
         }
       } else if (isPresent(provider.useFactory)) {
-        var deps = isPresent(provider.deps) ? provider.deps : provider.useFactory.diDeps;
+        var deps = provider.deps || provider.useFactory.diDeps;
         transformedDeps =
             deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager));
       } else if (isPresent(provider.useClass)) {
-        var deps = isPresent(provider.deps) ? provider.deps : provider.useClass.diDeps;
+        var deps = provider.deps || provider.useClass.diDeps;
         transformedDeps =
             deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager));
       }
@@ -338,11 +338,11 @@ export class NgModuleProviderAnalyzer {
           transformedUseValue = existingDiDep.value;
         }
       } else if (isPresent(provider.useFactory)) {
-        var deps = isPresent(provider.deps) ? provider.deps : provider.useFactory.diDeps;
+        var deps = provider.deps || provider.useFactory.diDeps;
         transformedDeps =
             deps.map((dep) => this._getDependency(dep, eager, resolvedProvider.sourceSpan));
       } else if (isPresent(provider.useClass)) {
-        var deps = isPresent(provider.deps) ? provider.deps : provider.useClass.diDeps;
+        var deps = provider.deps || provider.useClass.diDeps;
         transformedDeps =
             deps.map((dep) => this._getDependency(dep, eager, resolvedProvider.sourceSpan));
       }
diff --git a/modules/@angular/compiler/src/style_url_resolver.ts b/modules/@angular/compiler/src/style_url_resolver.ts
index e60030c2f5..b9050080b4 100644
--- a/modules/@angular/compiler/src/style_url_resolver.ts
+++ b/modules/@angular/compiler/src/style_url_resolver.ts
@@ -31,7 +31,7 @@ export function extractStyleUrls(
     resolver: UrlResolver, baseUrl: string, cssText: string): StyleWithImports {
   var foundUrls: string[] = [];
   var modifiedCssText = cssText.replace(_cssImportRe, function(...m: string[]) {
-    const url = isPresent(m[1]) ? m[1] : m[2];
+    const url = m[1] || m[2];
     if (!isStyleUrlResolvable(url)) {
       // Do not attempt to resolve non-package absolute URLs with URI scheme
       return m[0];
diff --git a/modules/@angular/compiler/src/view_compiler/compile_element.ts b/modules/@angular/compiler/src/view_compiler/compile_element.ts
index 8986330e89..6c85dfbd45 100644
--- a/modules/@angular/compiler/src/view_compiler/compile_element.ts
+++ b/modules/@angular/compiler/src/view_compiler/compile_element.ts
@@ -161,11 +161,11 @@ export class CompileElement extends CompileNode {
               resolvedProvider.providerType,
               new CompileDiDependencyMetadata({token: provider.useExisting}));
         } else if (isPresent(provider.useFactory)) {
-          var deps = isPresent(provider.deps) ? provider.deps : provider.useFactory.diDeps;
+          var deps = provider.deps || provider.useFactory.diDeps;
           var depsExpr = deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep));
           return o.importExpr(provider.useFactory).callFn(depsExpr);
         } else if (isPresent(provider.useClass)) {
-          var deps = isPresent(provider.deps) ? provider.deps : provider.useClass.diDeps;
+          var deps = provider.deps || provider.useClass.diDeps;
           var depsExpr = deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep));
           return o.importExpr(provider.useClass)
               .instantiate(depsExpr, o.importType(provider.useClass));
@@ -435,6 +435,6 @@ function createProviderProperty(
 class _QueryWithRead {
   public read: CompileTokenMetadata;
   constructor(public query: CompileQuery, match: CompileTokenMetadata) {
-    this.read = isPresent(query.meta.read) ? query.meta.read : match;
+    this.read = query.meta.read || match;
   }
 }
diff --git a/modules/@angular/compiler/src/view_compiler/compile_method.ts b/modules/@angular/compiler/src/view_compiler/compile_method.ts
index 992107e6be..c95c98482f 100644
--- a/modules/@angular/compiler/src/view_compiler/compile_method.ts
+++ b/modules/@angular/compiler/src/view_compiler/compile_method.ts
@@ -59,7 +59,7 @@ export class CompileMethod {
 
   resetDebugInfoExpr(nodeIndex: number, templateAst: TemplateAst): o.Expression {
     var res = this._updateDebugContext(new _DebugState(nodeIndex, templateAst));
-    return isPresent(res) ? res : o.NULL_EXPR;
+    return res || o.NULL_EXPR;
   }
 
   resetDebugInfo(nodeIndex: number, templateAst: TemplateAst) {
diff --git a/modules/@angular/compiler/src/view_compiler/event_binder.ts b/modules/@angular/compiler/src/view_compiler/event_binder.ts
index f68bc0a86f..2a46bde21f 100644
--- a/modules/@angular/compiler/src/view_compiler/event_binder.ts
+++ b/modules/@angular/compiler/src/view_compiler/event_binder.ts
@@ -59,8 +59,7 @@ export class CompileEventListener {
       this._hasComponentHostListener = true;
     }
     this._method.resetDebugInfo(this.compileElement.nodeIndex, hostEvent);
-    var context = isPresent(directiveInstance) ? directiveInstance :
-                                                 this.compileElement.view.componentContext;
+    var context = directiveInstance || this.compileElement.view.componentContext;
     var actionStmts = convertCdStatementToIr(
         this.compileElement.view, context, hostEvent.handler, this.compileElement.nodeIndex);
     var lastIndex = actionStmts.length - 1;
diff --git a/modules/@angular/compiler/src/view_compiler/view_builder.ts b/modules/@angular/compiler/src/view_compiler/view_builder.ts
index f832f0727d..432342ee0c 100644
--- a/modules/@angular/compiler/src/view_compiler/view_builder.ts
+++ b/modules/@angular/compiler/src/view_compiler/view_builder.ts
@@ -79,10 +79,10 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
     if (this._isRootNode(parent)) {
       // store appElement as root node only for ViewContainers
       if (this.view.viewType !== ViewType.COMPONENT) {
-        this.view.rootNodesOrAppElements.push(isPresent(vcAppEl) ? vcAppEl : node.renderNode);
+        this.view.rootNodesOrAppElements.push(vcAppEl || node.renderNode);
       }
     } else if (isPresent(parent.component) && isPresent(ngContentIndex)) {
-      parent.addContentNode(ngContentIndex, isPresent(vcAppEl) ? vcAppEl : node.renderNode);
+      parent.addContentNode(ngContentIndex, vcAppEl || node.renderNode);
     }
   }
 
diff --git a/modules/@angular/compiler/test/css_parser/css_visitor_spec.ts b/modules/@angular/compiler/test/css_parser/css_visitor_spec.ts
index 19d2a63bf3..546fd67e02 100644
--- a/modules/@angular/compiler/test/css_parser/css_visitor_spec.ts
+++ b/modules/@angular/compiler/test/css_parser/css_visitor_spec.ts
@@ -26,7 +26,7 @@ class MyVisitor implements CssAstVisitor {
    * @internal
    */
   _capture(method: string, ast: CssAst, context: any) {
-    this.captures[method] = isPresent(this.captures[method]) ? this.captures[method] : [];
+    this.captures[method] = this.captures[method] || [];
     this.captures[method].push([ast, context]);
   }
 
diff --git a/modules/@angular/compiler/testing/directive_resolver_mock.ts b/modules/@angular/compiler/testing/directive_resolver_mock.ts
index 7725385405..d733c8e83f 100644
--- a/modules/@angular/compiler/testing/directive_resolver_mock.ts
+++ b/modules/@angular/compiler/testing/directive_resolver_mock.ts
@@ -46,16 +46,14 @@ export class MockDirectiveResolver extends DirectiveResolver {
 
     let providers = metadata.providers;
     if (isPresent(providerOverrides)) {
-      const originalViewProviders: Provider[] =
-          isPresent(metadata.providers) ? metadata.providers : [];
+      const originalViewProviders: Provider[] = metadata.providers || [];
       providers = originalViewProviders.concat(providerOverrides);
     }
 
     if (metadata instanceof Component) {
       let viewProviders = metadata.viewProviders;
       if (isPresent(viewProviderOverrides)) {
-        const originalViewProviders: Provider[] =
-            isPresent(metadata.viewProviders) ? metadata.viewProviders : [];
+        const originalViewProviders: Provider[] = metadata.viewProviders || [];
         viewProviders = originalViewProviders.concat(viewProviderOverrides);
       }
 
diff --git a/modules/@angular/core/src/change_detection/differs/default_iterable_differ.ts b/modules/@angular/core/src/change_detection/differs/default_iterable_differ.ts
index 23b5a46943..14d2d18155 100644
--- a/modules/@angular/core/src/change_detection/differs/default_iterable_differ.ts
+++ b/modules/@angular/core/src/change_detection/differs/default_iterable_differ.ts
@@ -47,7 +47,7 @@ export class DefaultIterableDiffer implements IterableDiffer {
   private _identityChangesTail: CollectionChangeRecord = null;
 
   constructor(private _trackByFn?: TrackByFn) {
-    this._trackByFn = isPresent(this._trackByFn) ? this._trackByFn : trackByIdentity;
+    this._trackByFn = this._trackByFn || trackByIdentity;
   }
 
   get collection() { return this._collection; }
diff --git a/modules/@angular/core/src/linker/view_container_ref.ts b/modules/@angular/core/src/linker/view_container_ref.ts
index 3680cf74f1..028c751946 100644
--- a/modules/@angular/core/src/linker/view_container_ref.ts
+++ b/modules/@angular/core/src/linker/view_container_ref.ts
@@ -159,7 +159,7 @@ export class ViewContainerRef_ implements ViewContainerRef {
       componentFactory: ComponentFactory<C>, index: number = -1, injector: Injector = null,
       projectableNodes: any[][] = null): ComponentRef<C> {
     var s = this._createComponentInContainerScope();
-    var contextInjector = isPresent(injector) ? injector : this._element.parentInjector;
+    var contextInjector = injector || this._element.parentInjector;
     var componentRef = componentFactory.create(contextInjector, projectableNodes);
     this.insert(componentRef.hostView, index);
     return wtfLeave(s, componentRef);
diff --git a/modules/@angular/forms/src/model.ts b/modules/@angular/forms/src/model.ts
index e3f5b79ce6..48975d323a 100644
--- a/modules/@angular/forms/src/model.ts
+++ b/modules/@angular/forms/src/model.ts
@@ -52,13 +52,14 @@ function _find(control: AbstractControl, path: Array<string|number>| string, del
 
   return (<Array<string|number>>path).reduce((v, name) => {
     if (v instanceof FormGroup) {
-      return isPresent(v.controls[name]) ? v.controls[name] : null;
-    } else if (v instanceof FormArray) {
-      var index = <number>name;
-      return isPresent(v.at(index)) ? v.at(index) : null;
-    } else {
-      return null;
+      return v.controls[name] || null;
     }
+
+    if (v instanceof FormArray) {
+      return v.at(<number>name) || null;
+    }
+
+    return null;
   }, control);
 }
 
diff --git a/modules/@angular/platform-browser-dynamic/src/resource_loader/resource_loader_impl.ts b/modules/@angular/platform-browser-dynamic/src/resource_loader/resource_loader_impl.ts
index 2676ffdb42..f7ddb611d1 100644
--- a/modules/@angular/platform-browser-dynamic/src/resource_loader/resource_loader_impl.ts
+++ b/modules/@angular/platform-browser-dynamic/src/resource_loader/resource_loader_impl.ts
@@ -27,7 +27,7 @@ export class ResourceLoaderImpl extends ResourceLoader {
       // responseText is the old-school way of retrieving response (supported by IE8 & 9)
       // response/responseType properties were introduced in ResourceLoader Level2 spec (supported
       // by IE10)
-      var response = isPresent(xhr.response) ? xhr.response : xhr.responseText;
+      var response = xhr.response || xhr.responseText;
 
       // normalize IE9 bug (http://bugs.jquery.com/ticket/1450)
       var status = xhr.status === 1223 ? 204 : xhr.status;
diff --git a/modules/benchmarks/src/old/compiler/compiler_benchmark.ts b/modules/benchmarks/src/old/compiler/compiler_benchmark.ts
index c5a4bc5f0b..2efac68a18 100644
--- a/modules/benchmarks/src/old/compiler/compiler_benchmark.ts
+++ b/modules/benchmarks/src/old/compiler/compiler_benchmark.ts
@@ -78,8 +78,7 @@ class MultiplyDirectiveResolver extends DirectiveResolver {
   }
 
   resolve(component: Type): ViewMetadata {
-    var result = this._cache.get(component);
-    return isPresent(result) ? result : super.resolve(component);
+    return this._cache.get(component) || super.resolve(component);
   }
 }