refactor(@ngtools/webpack): remove suppressZoneJsIncompatibilityWarning option

BREAKING CHANGE

`suppressZoneJsIncompatibilityWarning` option has been removed. If you are using this plugin directly and `async/await` in ES2017 make sure you downlevel the async syntax using Babel.

See: https://github.com/angular/zone.js/pull/1140 for more information.

packages/angular_devkit/build_angular/src/webpack/configs/typescript.ts

@@ -70,7 +70,6 @@ function createIvyPlugin(
     fileReplacements,
     jitMode: !aot,
     emitNgModuleScope: !optimize,
-    suppressZoneJsIncompatibilityWarning: true,
   });
 }
 
@@ -139,7 +138,6 @@ function _createAotPlugin(
     directTemplateLoading: true,
     ...options,
     compilerOptions,
-    suppressZoneJsIncompatibilityWarning: true,
   };
 
   pluginOptions = _pluginOptionsOverrides(buildOptions, pluginOptions);

packages/ngtools/webpack/README.md

@@ -63,9 +63,6 @@ The loader works with webpack plugin to compile your TypeScript. It's important
 * `i18nOutFile`. Optional and only used for View Engine compilations. The name of the file to write extractions to.
 * `i18nOutFormat`. Optional and only used for View Engine compilations. The format of the localization file where extractions will be written to.
 * `locale`. Optional and only used for View Engine compilations. Locale to use for i18n.
-* `suppressZoneJsIncompatibilityWarning`. Optional, defaults to `false`. A Zone.js incompatibility warning is shown when the compilation target is ES2017+. Zone.js does not support native async/await in ES2017+. These blocks are not intercepted by zone.js and will not triggering change detection. 
-See https://github.com/angular/zone.js/pull/1140 for more information.
-
 ## Features
 The benefits and ability of using [`@ngtools/webpack`](https://www.npmjs.com/~ngtools) standalone from the Angular CLI as presented in [Stephen Fluin's Angular CLI talk](https://youtu.be/uBRK6cTr4Vk?t=6m45s) at Angular Connect 2016:
 

packages/ngtools/webpack/src/angular_compiler_plugin.ts

@@ -252,18 +252,6 @@ export class AngularCompilerPlugin {
       this._platformTransformers = options.platformTransformers;
     }
 
-    if (
-      !this.options.suppressZoneJsIncompatibilityWarning &&
-      this._compilerOptions.target !== undefined &&
-      this._compilerOptions.target >= ts.ScriptTarget.ES2017
-    ) {
-      this._warnings.push(
-        'Zone.js does not support native async/await in ES2017+.\n' +
-        'These blocks are not intercepted by zone.js and will not triggering change detection.\n' +
-        'See: https://github.com/angular/zone.js/pull/1140 for more information.',
-      );
-    }
-
     if (this._compilerOptions.strictMetadataEmit) {
       this._warnings.push(
         `Using Angular compiler option 'strictMetadataEmit' for applications might cause undefined behavior.`,

packages/ngtools/webpack/src/interfaces.ts

@@ -55,12 +55,4 @@ export interface AngularCompilerPluginOptions {
 
   host?: virtualFs.Host<fs.Stats>;
   platformTransformers?: ts.TransformerFactory<ts.SourceFile>[];
-
-  /**
-   * Suppress Zone.js incompatibility warning when using ES2017+.
-   * Zone.js does not support native async/await in ES2017+.
-   * These blocks are not intercepted by zone.js and will not triggering change detection.
-   * @see https://github.com/angular/zone.js/pull/1140
-  */
-  suppressZoneJsIncompatibilityWarning?: boolean;
 }

packages/ngtools/webpack/src/ivy/plugin.ts

@@ -44,7 +44,6 @@ export interface AngularPluginOptions {
   directTemplateLoading: boolean;
   emitClassMetadata: boolean;
   emitNgModuleScope: boolean;
-  suppressZoneJsIncompatibilityWarning: boolean;
   jitMode: boolean;
 }
 
@@ -105,7 +104,6 @@ export class AngularWebpackPlugin {
       substitutions: {},
       directTemplateLoading: true,
       tsconfig: 'tsconfig.json',
-      suppressZoneJsIncompatibilityWarning: false,
       ...options,
     };
   }
@@ -379,19 +377,6 @@ export class AngularWebpackPlugin {
     compilerOptions.annotationsAs = 'decorators';
     compilerOptions.enableResourceInlining = false;
 
-    if (
-      !this.pluginOptions.suppressZoneJsIncompatibilityWarning &&
-      compilerOptions.target &&
-      compilerOptions.target >= ts.ScriptTarget.ES2017
-    ) {
-      addWarning(
-        compilation,
-        'Zone.js does not support native async/await in ES2017+.\n' +
-          'These blocks are not intercepted by zone.js and will not triggering change detection.\n' +
-          'See: https://github.com/angular/zone.js/pull/1140 for more information.',
-      );
-    }
-
     return { compilerOptions, rootNames, errors };
   }