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@angular-devkit/build-angular

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"use strict"; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { if (k2 === undefined) k2 = k; var desc = Object.getOwnPropertyDescriptor(m, k); if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { desc = { enumerable: true, get: function() { return m[k]; } }; } Object.defineProperty(o, k2, desc); }) : (function(o, m, k, k2) { if (k2 === undefined) k2 = k; o[k2] = m[k]; })); var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { Object.defineProperty(o, "default", { enumerable: true, value: v }); }) : function(o, v) { o["default"] = v; }); var __importStar = (this && this.__importStar) || function (mod) { if (mod && mod.__esModule) return mod; var result = {}; if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); __setModuleDefault(result, mod); return result; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.IndexHtmlGenerator = void 0; const fs = __importStar(require("fs")); const path_1 = require("path"); const strip_bom_1 = require("../strip-bom"); const augment_index_html_1 = require("./augment-index-html"); const inline_critical_css_1 = require("./inline-critical-css"); const inline_fonts_1 = require("./inline-fonts"); const style_nonce_1 = require("./style-nonce"); class IndexHtmlGenerator { constructor(options) { this.options = options; const extraPlugins = []; if (this.options.optimization?.fonts.inline) { extraPlugins.push(inlineFontsPlugin(this)); } if (this.options.optimization?.styles.inlineCritical) { extraPlugins.push(inlineCriticalCssPlugin(this)); } this.plugins = [ augmentIndexHtmlPlugin(this), ...extraPlugins, // Runs after the `extraPlugins` to capture any nonce or // `style` tags that might've been added by them. addStyleNoncePlugin(), postTransformPlugin(this), ]; } async process(options) { let content = (0, strip_bom_1.stripBom)(await this.readIndex(this.options.indexPath)); const warnings = []; const errors = []; for (const plugin of this.plugins) { const result = await plugin(content, options); if (typeof result === 'string') { content = result; } else { content = result.content; if (result.warnings.length) { warnings.push(...result.warnings); } if (result.errors.length) { errors.push(...result.errors); } } } return { content, warnings, errors, }; } async readAsset(path) { return fs.promises.readFile(path, 'utf-8'); } async readIndex(path) { return fs.promises.readFile(path, 'utf-8'); } } exports.IndexHtmlGenerator = IndexHtmlGenerator; function augmentIndexHtmlPlugin(generator) { const { deployUrl, crossOrigin, sri = false, entrypoints } = generator.options; return async (html, options) => { const { lang, baseHref, outputPath = '', files, hints } = options; return (0, augment_index_html_1.augmentIndexHtml)({ html, baseHref, deployUrl, crossOrigin, sri, lang, entrypoints, loadOutputFile: (filePath) => generator.readAsset((0, path_1.join)(outputPath, filePath)), files, hints, }); }; } function inlineFontsPlugin({ options }) { const inlineFontsProcessor = new inline_fonts_1.InlineFontsProcessor({ minify: options.optimization?.styles.minify, }); return async (html) => inlineFontsProcessor.process(html); } function inlineCriticalCssPlugin(generator) { const inlineCriticalCssProcessor = new inline_critical_css_1.InlineCriticalCssProcessor({ minify: generator.options.optimization?.styles.minify, deployUrl: generator.options.deployUrl, readAsset: (filePath) => generator.readAsset(filePath), }); return async (html, options) => inlineCriticalCssProcessor.process(html, { outputPath: options.outputPath }); 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mode: HintMode; as?: string }[];\n}\n\nexport interface IndexHtmlGeneratorOptions {\n  indexPath: string;\n  deployUrl?: string;\n  sri?: boolean;\n  entrypoints: Entrypoint[];\n  postTransform?: IndexHtmlTransform;\n  crossOrigin?: CrossOriginValue;\n  optimization?: NormalizedOptimizationOptions;\n  cache?: NormalizedCachedOptions;\n}\n\nexport type IndexHtmlTransform = (content: string) => Promise<string>;\n\nexport interface IndexHtmlTransformResult {\n  content: string;\n  warnings: string[];\n  errors: string[];\n}\n\nexport class IndexHtmlGenerator {\n  private readonly plugins: IndexHtmlGeneratorPlugin[];\n\n  constructor(readonly options: IndexHtmlGeneratorOptions) {\n    const extraPlugins: IndexHtmlGeneratorPlugin[] = [];\n    if (this.options.optimization?.fonts.inline) {\n      extraPlugins.push(inlineFontsPlugin(this));\n    }\n\n    if (this.options.optimization?.styles.inlineCritical) {\n      extraPlugins.push(inlineCriticalCssPlugin(this));\n    }\n\n    this.plugins = [\n      augmentIndexHtmlPlugin(this),\n      ...extraPlugins,\n      // Runs after the `extraPlugins` to capture any nonce or\n      // `style` tags that might've been added by them.\n      addStyleNoncePlugin(),\n      postTransformPlugin(this),\n    ];\n  }\n\n  async process(options: IndexHtmlGeneratorProcessOptions): Promise<IndexHtmlTransformResult> {\n    let content = stripBom(await this.readIndex(this.options.indexPath));\n    const warnings: string[] = [];\n    const errors: string[] = [];\n\n    for (const plugin of this.plugins) {\n      const result = await plugin(content, options);\n      if (typeof result === 'string') {\n        content = result;\n      } else {\n        content = result.content;\n\n        if (result.warnings.length) {\n          warnings.push(...result.warnings);\n        }\n\n        if (result.errors.length) {\n          errors.push(...result.errors);\n        }\n      }\n    }\n\n    return {\n      content,\n      warnings,\n      errors,\n    };\n  }\n\n  async readAsset(path: string): Promise<string> {\n    return fs.promises.readFile(path, 'utf-8');\n  }\n\n  protected async readIndex(path: string): Promise<string> {\n    return fs.promises.readFile(path, 'utf-8');\n  }\n}\n\nfunction augmentIndexHtmlPlugin(generator: IndexHtmlGenerator): IndexHtmlGeneratorPlugin {\n  const { deployUrl, crossOrigin, sri = false, entrypoints } = generator.options;\n\n  return async (html, options) => {\n    const { lang, baseHref, outputPath = '', files, hints } = options;\n\n    return augmentIndexHtml({\n      html,\n      baseHref,\n      deployUrl,\n      crossOrigin,\n      sri,\n      lang,\n      entrypoints,\n      loadOutputFile: (filePath) => generator.readAsset(join(outputPath, filePath)),\n      files,\n      hints,\n    });\n  };\n}\n\nfunction inlineFontsPlugin({ options }: IndexHtmlGenerator): IndexHtmlGeneratorPlugin {\n  const inlineFontsProcessor = new InlineFontsProcessor({\n    minify: options.optimization?.styles.minify,\n  });\n\n  return async (html) => inlineFontsProcessor.process(html);\n}\n\nfunction inlineCriticalCssPlugin(generator: IndexHtmlGenerator): IndexHtmlGeneratorPlugin {\n  const inlineCriticalCssProcessor = new InlineCriticalCssProcessor({\n    minify: generator.options.optimization?.styles.minify,\n    deployUrl: generator.options.deployUrl,\n    readAsset: (filePath) => generator.readAsset(filePath),\n  });\n\n  return async (html, options) =>\n    inlineCriticalCssProcessor.process(html, { outputPath: options.outputPath });\n}\n\nfunction addStyleNoncePlugin(): IndexHtmlGeneratorPlugin {\n  return (html) => addStyleNonce(html);\n}\n\nfunction postTransformPlugin({ options }: IndexHtmlGenerator): IndexHtmlGeneratorPlugin {\n  return async (html) => (options.postTransform ? options.postTransform(html) : html);\n}\n"]}