@farris/build-angular
Version:
Angular Webpack Build Facade
94 lines • 14.4 kB
JavaScript
;
// tslint:disable
// TODO: cleanup this file, it's copied as is from Angular CLI.
Object.defineProperty(exports, "__esModule", { value: true });
const webpack_sources_1 = require("webpack-sources");
const CleanCSS = require('clean-css');
function hook(compiler, action) {
if (compiler.hooks) {
// Webpack 4
compiler.hooks.compilation.tap('cleancss-webpack-plugin', (compilation) => {
compilation.hooks.optimizeChunkAssets.tapPromise('cleancss-webpack-plugin', (chunks) => action(compilation, chunks));
});
}
else {
// Webpack 3
compiler.plugin('compilation', (compilation) => {
compilation.plugin('optimize-chunk-assets', (chunks, callback) => action(compilation, chunks)
.then(() => callback())
.catch((err) => callback(err)));
});
}
}
class CleanCssWebpackPlugin {
constructor(options) {
this._options = Object.assign({ sourceMap: false, test: (file) => file.endsWith('.css') }, options);
}
apply(compiler) {
hook(compiler, (compilation, chunks) => {
const cleancss = new CleanCSS({
compatibility: 'ie9',
level: 2,
inline: false,
returnPromise: true,
sourceMap: this._options.sourceMap,
});
const files = [...compilation.additionalChunkAssets];
chunks.forEach(chunk => {
if (chunk.files && chunk.files.length > 0) {
files.push(...chunk.files);
}
});
const actions = files
.filter(file => this._options.test(file))
.map(file => {
const asset = compilation.assets[file];
if (!asset) {
return Promise.resolve();
}
let content;
let map;
if (this._options.sourceMap && asset.sourceAndMap) {
const sourceAndMap = asset.sourceAndMap();
content = sourceAndMap.source;
map = sourceAndMap.map;
}
else {
content = asset.source();
}
if (content.length === 0) {
return Promise.resolve();
}
return Promise.resolve()
.then(() => cleancss.minify(content, map))
.then((output) => {
let hasWarnings = false;
if (output.warnings && output.warnings.length > 0) {
compilation.warnings.push(...output.warnings);
hasWarnings = true;
}
if (output.errors && output.errors.length > 0) {
output.errors
.forEach((error) => compilation.errors.push(new Error(error)));
return;
}
// generally means invalid syntax so bail
if (hasWarnings && output.stats.minifiedSize === 0) {
return;
}
let newSource;
if (output.sourceMap) {
newSource = new webpack_sources_1.SourceMapSource(output.styles, file, output.sourceMap.toString(), content, map);
}
else {
newSource = new webpack_sources_1.RawSource(output.styles);
}
compilation.assets[file] = newSource;
});
});
return Promise.all(actions);
});
}
}
exports.CleanCssWebpackPlugin = CleanCssWebpackPlugin;
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport { Compiler } from 'webpack';\nimport { RawSource, SourceMapSource } from 'webpack-sources';\n\nconst CleanCSS = require('clean-css');\n\ninterface Chunk {\n  files: string[];\n}\n\nexport interface CleanCssWebpackPluginOptions {\n  sourceMap: boolean;\n  test: (file: string) => boolean;\n}\n\nfunction hook(\n  compiler: any,\n  action: (compilation: any, chunks: Array<Chunk>) => Promise<void | void[]>,\n) {\n  if (compiler.hooks) {\n    // Webpack 4\n    compiler.hooks.compilation.tap('cleancss-webpack-plugin', (compilation: any) => {\n      compilation.hooks.optimizeChunkAssets.tapPromise(\n        'cleancss-webpack-plugin',\n        (chunks: Array<Chunk>) => action(compilation, chunks),\n      );\n    });\n  } else {\n    // Webpack 3\n    compiler.plugin('compilation', (compilation: any) => {\n      compilation.plugin(\n        'optimize-chunk-assets',\n        (chunks: Array<Chunk>, callback: (err?: Error) => void) => action(compilation, chunks)\n          .then(() => callback())\n          .catch((err) => callback(err)),\n      );\n    });\n  }\n}\n\nexport class CleanCssWebpackPlugin {\n  private readonly _options: CleanCssWebpackPluginOptions;\n\n  constructor(options: Partial<CleanCssWebpackPluginOptions>) {\n    this._options = {\n      sourceMap: false,\n      test: (file) => file.endsWith('.css'),\n      ...options,\n    };\n  }\n\n  apply(compiler: Compiler): void {\n    hook(compiler, (compilation: any, chunks: Array<Chunk>) => {\n      const cleancss = new CleanCSS({\n        compatibility: 'ie9',\n        level: 2,\n        inline: false,\n        returnPromise: true,\n        sourceMap: this._options.sourceMap,\n      });\n\n      const files: string[] = [...compilation.additionalChunkAssets];\n\n      chunks.forEach(chunk => {\n        if (chunk.files && chunk.files.length > 0) {\n          files.push(...chunk.files);\n        }\n      });\n\n      const actions = files\n        .filter(file => this._options.test(file))\n        .map(file => {\n          const asset = compilation.assets[file];\n          if (!asset) {\n            return Promise.resolve();\n          }\n\n          let content: string;\n          let map: any;\n          if (this._options.sourceMap && asset.sourceAndMap) {\n            const sourceAndMap = asset.sourceAndMap();\n            content = sourceAndMap.source;\n            map = sourceAndMap.map;\n          } else {\n            content = asset.source();\n          }\n\n          if (content.length === 0) {\n            return Promise.resolve();\n          }\n\n          return Promise.resolve()\n            .then(() => cleancss.minify(content, map))\n            .then((output: any) => {\n              let hasWarnings = false;\n              if (output.warnings && output.warnings.length > 0) {\n                compilation.warnings.push(...output.warnings);\n                hasWarnings = true;\n              }\n\n              if (output.errors && output.errors.length > 0) {\n                output.errors\n                  .forEach((error: string) => compilation.errors.push(new Error(error)));\n                return;\n              }\n\n              // generally means invalid syntax so bail\n              if (hasWarnings && output.stats.minifiedSize === 0) {\n                return;\n              }\n\n              let newSource;\n              if (output.sourceMap) {\n                newSource = new SourceMapSource(\n                  output.styles,\n                  file,\n                  output.sourceMap.toString(),\n                  content,\n                  map,\n                );\n              } else {\n                newSource = new RawSource(output.styles);\n              }\n\n              compilation.assets[file] = newSource;\n            });\n        });\n\n      return Promise.all(actions);\n    });\n  }\n}\n"]}