refactor: misc cleanup

modules/@angular/compiler/src/directive_normalizer.ts

@@ -115,27 +115,27 @@ export class DirectiveNormalizer {
     const templateStyles = this.normalizeStylesheet(new CompileStylesheetMetadata(
         {styles: visitor.styles, styleUrls: visitor.styleUrls, moduleUrl: templateAbsUrl}));
 
-    const allStyles = templateMetadataStyles.styles.concat(templateStyles.styles);
-    const allStyleUrls = templateMetadataStyles.styleUrls.concat(templateStyles.styleUrls);
-
     let encapsulation = templateMeta.encapsulation;
     if (isBlank(encapsulation)) {
       encapsulation = this._config.defaultEncapsulation;
     }
-    if (encapsulation === ViewEncapsulation.Emulated && allStyles.length === 0 &&
-        allStyleUrls.length === 0) {
+
+    const styles = templateMetadataStyles.styles.concat(templateStyles.styles);
+    const styleUrls = templateMetadataStyles.styleUrls.concat(templateStyles.styleUrls);
+
+    if (encapsulation === ViewEncapsulation.Emulated && styles.length === 0 &&
+        styleUrls.length === 0) {
       encapsulation = ViewEncapsulation.None;
     }
+
     return new CompileTemplateMetadata({
       encapsulation,
-      template: template,
-      templateUrl: templateAbsUrl,
-      styles: allStyles,
-      styleUrls: allStyleUrls,
+      template,
+      templateUrl: templateAbsUrl, styles, styleUrls,
       externalStylesheets: templateMeta.externalStylesheets,
       ngContentSelectors: visitor.ngContentSelectors,
       animations: templateMeta.animations,
-      interpolation: templateMeta.interpolation
+      interpolation: templateMeta.interpolation,
     });
   }
 
@@ -251,7 +251,6 @@ function _cloneDirectiveWithTemplate(
     viewProviders: directive.viewProviders,
     queries: directive.queries,
     viewQueries: directive.viewQueries,
-    entryComponents: directive.entryComponents,
-    template: template
+    entryComponents: directive.entryComponents, template,
   });
 }

modules/@angular/core/src/application_module.ts

@@ -14,7 +14,6 @@ import {LOCALE_ID} from './i18n/tokens';
 import {Compiler} from './linker/compiler';
 import {ViewUtils} from './linker/view_utils';
 import {NgModule} from './metadata';
-import {Type} from './type';
 
 export function _iterableDiffersFactory() {
   return defaultIterableDiffers;

modules/@angular/core/src/application_ref.ts

@@ -9,7 +9,7 @@
 import {ErrorHandler} from '../src/error_handler';
 import {ListWrapper} from '../src/facade/collection';
 import {unimplemented} from '../src/facade/errors';
-import {isBlank, isPresent, stringify} from '../src/facade/lang';
+import {stringify} from '../src/facade/lang';
 import {isPromise} from '../src/util/lang';
 
 import {ApplicationInitStatus} from './application_init';
@@ -26,9 +26,9 @@ import {Testability, TestabilityRegistry} from './testability/testability';
 import {Type} from './type';
 import {NgZone} from './zone/ng_zone';
 
-var _devMode: boolean = true;
-var _runModeLocked: boolean = false;
-var _platform: PlatformRef;
+let _devMode: boolean = true;
+let _runModeLocked: boolean = false;
+let _platform: PlatformRef;
 
 /**
  * Disable Angular's development mode, which turns off assertions and other
@@ -67,13 +67,13 @@ export function isDevMode(): boolean {
  * @experimental APIs related to application bootstrap are currently under review.
  */
 export function createPlatform(injector: Injector): PlatformRef {
-  if (isPresent(_platform) && !_platform.destroyed) {
+  if (_platform && !_platform.destroyed) {
     throw new Error(
         'There can be only one platform. Destroy the previous one to create a new one.');
   }
   _platform = injector.get(PlatformRef);
   const inits: Function[] = <Function[]>injector.get(PLATFORM_INITIALIZER, null);
-  if (isPresent(inits)) inits.forEach(init => init());
+  if (inits) inits.forEach(init => init());
   return _platform;
 }
 
@@ -107,14 +107,17 @@ export function createPlatformFactory(
  * @experimental APIs related to application bootstrap are currently under review.
  */
 export function assertPlatform(requiredToken: any): PlatformRef {
-  var platform = getPlatform();
-  if (isBlank(platform)) {
+  const platform = getPlatform();
+
+  if (!platform) {
     throw new Error('No platform exists!');
   }
-  if (isPresent(platform) && isBlank(platform.injector.get(requiredToken, null))) {
+
+  if (!platform.injector.get(requiredToken, null)) {
     throw new Error(
         'A platform with a different configuration has been created. Please destroy it first.');
   }
+
   return platform;
 }
 
@@ -124,7 +127,7 @@ export function assertPlatform(requiredToken: any): PlatformRef {
  * @experimental APIs related to application bootstrap are currently under review.
  */
 export function destroyPlatform(): void {
-  if (isPresent(_platform) && !_platform.destroyed) {
+  if (_platform && !_platform.destroyed) {
     _platform.destroy();
   }
 }
@@ -135,7 +138,7 @@ export function destroyPlatform(): void {
  * @experimental APIs related to application bootstrap are currently under review.
  */
 export function getPlatform(): PlatformRef {
-  return isPresent(_platform) && !_platform.destroyed ? _platform : null;
+  return _platform && !_platform.destroyed ? _platform : null;
 }
 
 /**
@@ -224,9 +227,9 @@ function _callAndReportToErrorHandler(errorHandler: ErrorHandler, callback: () =
         // rethrow as the exception handler might not do it
         throw e;
       });
-    } else {
-      return result;
     }
+
+    return result;
   } catch (e) {
     errorHandler.handleError(e);
     // rethrow as the exception handler might not do it
@@ -238,7 +241,6 @@ function _callAndReportToErrorHandler(errorHandler: ErrorHandler, callback: () =
 export class PlatformRef_ extends PlatformRef {
   private _modules: NgModuleRef<any>[] = [];
   private _destroyListeners: Function[] = [];
-
   private _destroyed: boolean = false;
 
   constructor(private _injector: Injector) { super(); }
@@ -253,8 +255,8 @@ export class PlatformRef_ extends PlatformRef {
     if (this._destroyed) {
       throw new Error('The platform has already been destroyed!');
     }
-    ListWrapper.clone(this._modules).forEach((app) => app.destroy());
-    this._destroyListeners.forEach((dispose) => dispose());
+    this._modules.slice().forEach(module => module.destroy());
+    this._destroyListeners.forEach(listener => listener());
     this._destroyed = true;
   }
 
@@ -301,7 +303,7 @@ export class PlatformRef_ extends PlatformRef {
       componentFactoryCallback?: any): Promise<NgModuleRef<M>> {
     const compilerFactory: CompilerFactory = this.injector.get(CompilerFactory);
     const compiler = compilerFactory.createCompiler(
-        compilerOptions instanceof Array ? compilerOptions : [compilerOptions]);
+        Array.isArray(compilerOptions) ? compilerOptions : [compilerOptions]);
 
     // ugly internal api hack: generate host component factories for all declared components and
     // pass the factories into the callback - this is used by UpdateAdapter to get hold of all
@@ -424,10 +426,10 @@ export class ApplicationRef_ extends ApplicationRef {
       componentFactory = this._componentFactoryResolver.resolveComponentFactory(componentOrFactory);
     }
     this._rootComponentTypes.push(componentFactory.componentType);
-    var compRef = componentFactory.create(this._injector, [], componentFactory.selector);
+    const compRef = componentFactory.create(this._injector, [], componentFactory.selector);
     compRef.onDestroy(() => { this._unloadComponent(compRef); });
-    var testability = compRef.injector.get(Testability, null);
-    if (isPresent(testability)) {
+    const testability = compRef.injector.get(Testability, null);
+    if (testability) {
       compRef.injector.get(TestabilityRegistry)
           .registerApplication(compRef.location.nativeElement, testability);
     }
@@ -454,7 +456,7 @@ export class ApplicationRef_ extends ApplicationRef {
 
   /** @internal */
   _unloadComponent(componentRef: ComponentRef<any>): void {
-    if (!ListWrapper.contains(this._rootComponents, componentRef)) {
+    if (this._rootComponents.indexOf(componentRef) == -1) {
       return;
     }
     this.unregisterChangeDetector(componentRef.changeDetectorRef);
@@ -466,7 +468,7 @@ export class ApplicationRef_ extends ApplicationRef {
       throw new Error('ApplicationRef.tick is called recursively');
     }
 
-    var s = ApplicationRef_._tickScope();
+    const scope = ApplicationRef_._tickScope();
     try {
       this._runningTick = true;
       this._changeDetectorRefs.forEach((detector) => detector.detectChanges());
@@ -475,13 +477,13 @@ export class ApplicationRef_ extends ApplicationRef {
       }
     } finally {
       this._runningTick = false;
-      wtfLeave(s);
+      wtfLeave(scope);
     }
   }
 
   ngOnDestroy() {
     // TODO(alxhub): Dispose of the NgZone.
-    ListWrapper.clone(this._rootComponents).forEach((ref) => ref.destroy());
+    this._rootComponents.slice().forEach((component) => component.destroy());
   }
 
   get componentTypes(): Type<any>[] { return this._rootComponentTypes; }

modules/@angular/core/src/application_tokens.ts

@@ -34,7 +34,7 @@ export function _appIdRandomProviderFactory() {
 export const APP_ID_RANDOM_PROVIDER = {
   provide: APP_ID,
   useFactory: _appIdRandomProviderFactory,
-  deps: <any[]>[]
+  deps: <any[]>[],
 };
 
 function _randomChar(): string {

modules/@angular/core/src/linker/view_utils.ts

@@ -10,7 +10,6 @@ import {APP_ID} from '../application_tokens';
 import {devModeEqual} from '../change_detection/change_detection';
 import {UNINITIALIZED} from '../change_detection/change_detection_util';
 import {Inject, Injectable} from '../di';
-import {ListWrapper} from '../facade/collection';
 import {isBlank, isPresent, looseIdentical} from '../facade/lang';
 import {ViewEncapsulation} from '../metadata/view';
 import {RenderComponentType, Renderer, RootRenderer} from '../render/api';

modules/@angular/core/src/metadata.ts

@@ -15,8 +15,6 @@ import {Attribute, ContentChild, ContentChildren, Query, ViewChild, ViewChildren
 import {Component, Directive, HostBinding, HostListener, Input, Output, Pipe} from './metadata/directives';
 import {ModuleWithProviders, NgModule, SchemaMetadata} from './metadata/ng_module';
 import {ViewEncapsulation} from './metadata/view';
-import {Type} from './type';
-import {TypeDecorator, makeParamDecorator, makePropDecorator} from './util/decorators';
 
 export {ANALYZE_FOR_ENTRY_COMPONENTS, Attribute, ContentChild, ContentChildDecorator, ContentChildren, ContentChildrenDecorator, Query, ViewChild, ViewChildDecorator, ViewChildren, ViewChildrenDecorator} from './metadata/di';
 export {Component, ComponentDecorator, Directive, DirectiveDecorator, HostBinding, HostListener, Input, Output, Pipe} from './metadata/directives';

modules/@angular/core/src/metadata/view.ts

@@ -7,8 +7,6 @@
  */
 
 import {AnimationEntryMetadata} from '../animation/metadata';
-import {Type} from '../type';
-
 
 /**
  * Defines template and style encapsulation options available for Component's {@link Component}.
@@ -46,13 +44,6 @@ export var VIEW_ENCAPSULATION_VALUES =
 /**
  * Metadata properties available for configuring Views.
  *
- * Each Angular component requires a single `@Component` and at least one `@View` annotation. The
- * `@View` annotation specifies the HTML template to use, and lists the directives that are active
- * within the template.
- *
- * When a component is instantiated, the template is loaded into the component's shadow root, and
- * the expressions and statements in the template are evaluated against the component.
- *
  * For details on the `@Component` annotation, see {@link Component}.
  *
  * ### Example
@@ -61,7 +52,6 @@ export var VIEW_ENCAPSULATION_VALUES =
  * @Component({
  *   selector: 'greet',
  *   template: 'Hello {{name}}!',
- *   directives: [GreetUser, Bold]
  * })
  * class Greet {
  *   name: string;
@@ -73,46 +63,23 @@ export var VIEW_ENCAPSULATION_VALUES =
  * ```
  *
  * @deprecated Use Component instead.
+ *
+ * {@link Component}
  */
 export class ViewMetadata {
-  /**
-   * Specifies a template URL for an Angular component.
-   *
-   * NOTE: Only one of `templateUrl` or `template` can be defined per View.
-   *
-   * <!-- TODO: what's the url relative to? -->
-   */
+  /** {@link Component.templateUrl} */
   templateUrl: string;
-
-  /**
-   * Specifies an inline template for an Angular component.
-   *
-   * NOTE: Only one of `templateUrl` or `template` can be defined per View.
-   */
+  /** {@link Component.template} */
   template: string;
-
-  /**
-   * Specifies stylesheet URLs for an Angular component.
-   *
-   * <!-- TODO: what's the url relative to? -->
-   */
+  /** {@link Component.stylesUrl} */
   styleUrls: string[];
-
-  /**
-   * Specifies an inline stylesheet for an Angular component.
-   */
+  /** {@link Component.styles} */
   styles: string[];
-
-  /**
-   * Specify how the template and the styles should be encapsulated.
-   * The default is {@link ViewEncapsulation#Emulated `ViewEncapsulation.Emulated`} if the view
-   * has styles,
-   * otherwise {@link ViewEncapsulation#None `ViewEncapsulation.None`}.
-   */
+  /** {@link Component.encapsulation} */
   encapsulation: ViewEncapsulation;
-
+  /** {@link Component.animation} */
   animations: AnimationEntryMetadata[];
-
+  /** {@link Component.interpolation} */
   interpolation: [string, string];
 
   constructor(

modules/@angular/core/src/platform_core_providers.ts

@@ -8,7 +8,7 @@
 
 import {PlatformRef, PlatformRef_, createPlatformFactory} from './application_ref';
 import {Console} from './console';
-import {ClassProvider, ExistingProvider, FactoryProvider, Provider, TypeProvider, ValueProvider} from './di';
+import {Provider} from './di';
 import {Reflector, reflector} from './reflection/reflection';
 import {ReflectorReader} from './reflection/reflector_reader';
 import {TestabilityRegistry} from './testability/testability';
@@ -18,9 +18,12 @@ function _reflector(): Reflector {
 }
 
 const _CORE_PLATFORM_PROVIDERS: Provider[] = [
-  PlatformRef_, {provide: PlatformRef, useExisting: PlatformRef_},
+  PlatformRef_,
+  {provide: PlatformRef, useExisting: PlatformRef_},
   {provide: Reflector, useFactory: _reflector, deps: []},
-  {provide: ReflectorReader, useExisting: Reflector}, TestabilityRegistry, Console
+  {provide: ReflectorReader, useExisting: Reflector},
+  TestabilityRegistry,
+  Console,
 ];
 
 /**

modules/@angular/core/src/type.ts

@@ -16,7 +16,7 @@
  *
  * @stable
  */
-export var Type = Function;
+export const Type = Function;
 
 
 export interface Type<T> extends Function { new (...args: any[]): T; }

tools/public_api_guard/core/index.d.ts

@@ -916,7 +916,7 @@ export declare const TRANSLATIONS_FORMAT: OpaqueToken;
 export declare function trigger(name: string, animation: AnimationMetadata[]): AnimationEntryMetadata;
 
 /** @stable */
-export declare var Type: FunctionConstructor;
+export declare const Type: FunctionConstructor;
 
 /** @stable */
 export interface TypeDecorator {