587 lines
17 KiB
JavaScript
587 lines
17 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Sergey Melyukov @smelukov
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*/
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"use strict";
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const mimeTypes = require("mime-types");
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const path = require("path");
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const { RawSource } = require("webpack-sources");
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const ConcatenationScope = require("../ConcatenationScope");
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const Generator = require("../Generator");
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const { ASSET_MODULE_TYPE } = require("../ModuleTypeConstants");
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const RuntimeGlobals = require("../RuntimeGlobals");
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const CssUrlDependency = require("../dependencies/CssUrlDependency");
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const createHash = require("../util/createHash");
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const { makePathsRelative } = require("../util/identifier");
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const nonNumericOnlyHash = require("../util/nonNumericOnlyHash");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("../../declarations/WebpackOptions").AssetGeneratorDataUrlOptions} AssetGeneratorDataUrlOptions */
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/** @typedef {import("../../declarations/WebpackOptions").AssetGeneratorOptions} AssetGeneratorOptions */
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/** @typedef {import("../../declarations/WebpackOptions").AssetModuleFilename} AssetModuleFilename */
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/** @typedef {import("../../declarations/WebpackOptions").AssetModuleOutputPath} AssetModuleOutputPath */
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/** @typedef {import("../../declarations/WebpackOptions").RawPublicPath} RawPublicPath */
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/** @typedef {import("../Compilation")} Compilation */
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Generator").GenerateContext} GenerateContext */
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/** @typedef {import("../Generator").UpdateHashContext} UpdateHashContext */
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/** @typedef {import("../Module")} Module */
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/** @typedef {import("../Module").BuildInfo} BuildInfo */
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/** @typedef {import("../Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */
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/** @typedef {import("../NormalModule")} NormalModule */
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/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("../TemplatedPathPlugin").TemplatePath} TemplatePath */
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/** @typedef {import("../util/Hash")} Hash */
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/** @typedef {import("../util/createHash").Algorithm} Algorithm */
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/**
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* @template T
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* @template U
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* @param {Array<T> | Set<T>} a a
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* @param {Array<U> | Set<U>} b b
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* @returns {Array<T> & Array<U>} array
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*/
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const mergeMaybeArrays = (a, b) => {
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const set = new Set();
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if (Array.isArray(a)) for (const item of a) set.add(item);
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else set.add(a);
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if (Array.isArray(b)) for (const item of b) set.add(item);
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else set.add(b);
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return Array.from(set);
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};
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/**
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* @template {object} T
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* @template {object} U
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* @param {TODO} a a
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* @param {TODO} b b
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* @returns {T & U} object
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*/
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const mergeAssetInfo = (a, b) => {
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const result = { ...a, ...b };
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for (const key of Object.keys(a)) {
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if (key in b) {
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if (a[key] === b[key]) continue;
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switch (key) {
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case "fullhash":
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case "chunkhash":
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case "modulehash":
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case "contenthash":
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result[key] = mergeMaybeArrays(a[key], b[key]);
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break;
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case "immutable":
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case "development":
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case "hotModuleReplacement":
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case "javascriptModule":
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result[key] = a[key] || b[key];
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break;
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case "related":
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result[key] = mergeRelatedInfo(a[key], b[key]);
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break;
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default:
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throw new Error(`Can't handle conflicting asset info for ${key}`);
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}
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}
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}
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return result;
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};
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/**
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* @template {object} T
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* @template {object} U
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* @param {TODO} a a
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* @param {TODO} b b
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* @returns {T & U} object
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*/
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const mergeRelatedInfo = (a, b) => {
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const result = { ...a, ...b };
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for (const key of Object.keys(a)) {
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if (key in b) {
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if (a[key] === b[key]) continue;
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result[key] = mergeMaybeArrays(a[key], b[key]);
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}
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}
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return result;
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};
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/**
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* @param {"base64" | false} encoding encoding
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* @param {Source} source source
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* @returns {string} encoded data
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*/
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const encodeDataUri = (encoding, source) => {
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/** @type {string | undefined} */
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let encodedContent;
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switch (encoding) {
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case "base64": {
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encodedContent = source.buffer().toString("base64");
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break;
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}
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case false: {
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const content = source.source();
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if (typeof content !== "string") {
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encodedContent = content.toString("utf-8");
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}
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encodedContent = encodeURIComponent(
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/** @type {string} */
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(encodedContent)
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).replace(
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/[!'()*]/g,
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character =>
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`%${/** @type {number} */ (character.codePointAt(0)).toString(16)}`
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);
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break;
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}
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default:
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throw new Error(`Unsupported encoding '${encoding}'`);
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}
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return encodedContent;
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};
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/**
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* @param {string} encoding encoding
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* @param {string} content content
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* @returns {Buffer} decoded content
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*/
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const decodeDataUriContent = (encoding, content) => {
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const isBase64 = encoding === "base64";
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if (isBase64) {
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return Buffer.from(content, "base64");
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}
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// If we can't decode return the original body
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try {
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return Buffer.from(decodeURIComponent(content), "ascii");
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} catch (_) {
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return Buffer.from(content, "ascii");
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}
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};
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const JS_TYPES = new Set(["javascript"]);
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const JS_AND_ASSET_TYPES = new Set(["javascript", ASSET_MODULE_TYPE]);
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const DEFAULT_ENCODING = "base64";
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class AssetGenerator extends Generator {
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/**
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* @param {AssetGeneratorOptions["dataUrl"]=} dataUrlOptions the options for the data url
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* @param {AssetModuleFilename=} filename override for output.assetModuleFilename
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* @param {RawPublicPath=} publicPath override for output.assetModulePublicPath
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* @param {AssetModuleOutputPath=} outputPath the output path for the emitted file which is not included in the runtime import
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* @param {boolean=} emit generate output asset
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*/
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constructor(dataUrlOptions, filename, publicPath, outputPath, emit) {
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super();
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this.dataUrlOptions = dataUrlOptions;
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this.filename = filename;
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this.publicPath = publicPath;
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this.outputPath = outputPath;
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this.emit = emit;
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}
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/**
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* @param {NormalModule} module module
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* @param {RuntimeTemplate} runtimeTemplate runtime template
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* @returns {string} source file name
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*/
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getSourceFileName(module, runtimeTemplate) {
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return makePathsRelative(
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runtimeTemplate.compilation.compiler.context,
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module.matchResource || module.resource,
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runtimeTemplate.compilation.compiler.root
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).replace(/^\.\//, "");
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}
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/**
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* @param {NormalModule} module module for which the bailout reason should be determined
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* @param {ConcatenationBailoutReasonContext} context context
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* @returns {string | undefined} reason why this module can't be concatenated, undefined when it can be concatenated
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*/
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getConcatenationBailoutReason(module, context) {
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return undefined;
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}
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/**
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* @param {NormalModule} module module
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* @returns {string} mime type
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*/
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getMimeType(module) {
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if (typeof this.dataUrlOptions === "function") {
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throw new Error(
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"This method must not be called when dataUrlOptions is a function"
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);
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}
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/** @type {string | boolean | undefined} */
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let mimeType =
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/** @type {AssetGeneratorDataUrlOptions} */
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(this.dataUrlOptions).mimetype;
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if (mimeType === undefined) {
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const ext = path.extname(
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/** @type {string} */
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(module.nameForCondition())
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);
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if (
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module.resourceResolveData &&
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module.resourceResolveData.mimetype !== undefined
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) {
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mimeType =
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module.resourceResolveData.mimetype +
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module.resourceResolveData.parameters;
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} else if (ext) {
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mimeType = mimeTypes.lookup(ext);
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if (typeof mimeType !== "string") {
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throw new Error(
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"DataUrl can't be generated automatically, " +
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`because there is no mimetype for "${ext}" in mimetype database. ` +
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'Either pass a mimetype via "generator.mimetype" or ' +
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'use type: "asset/resource" to create a resource file instead of a DataUrl'
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);
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}
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}
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}
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if (typeof mimeType !== "string") {
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throw new Error(
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"DataUrl can't be generated automatically. " +
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'Either pass a mimetype via "generator.mimetype" or ' +
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'use type: "asset/resource" to create a resource file instead of a DataUrl'
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);
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}
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return /** @type {string} */ (mimeType);
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}
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/**
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* @param {NormalModule} module module for which the code should be generated
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* @param {GenerateContext} generateContext context for generate
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* @returns {Source} generated code
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*/
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generate(
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module,
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{
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runtime,
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concatenationScope,
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chunkGraph,
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runtimeTemplate,
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runtimeRequirements,
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type,
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getData
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}
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) {
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switch (type) {
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case ASSET_MODULE_TYPE:
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return /** @type {Source} */ (module.originalSource());
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default: {
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let content;
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const originalSource = /** @type {Source} */ (module.originalSource());
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if (
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/** @type {BuildInfo} */
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(module.buildInfo).dataUrl
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) {
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let encodedSource;
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if (typeof this.dataUrlOptions === "function") {
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encodedSource = this.dataUrlOptions.call(
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null,
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originalSource.source(),
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{
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filename: module.matchResource || module.resource,
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module
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}
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);
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} else {
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/** @type {"base64" | false | undefined} */
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let encoding =
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/** @type {AssetGeneratorDataUrlOptions} */
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(this.dataUrlOptions).encoding;
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if (
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encoding === undefined &&
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module.resourceResolveData &&
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module.resourceResolveData.encoding !== undefined
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) {
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encoding = module.resourceResolveData.encoding;
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}
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if (encoding === undefined) {
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encoding = DEFAULT_ENCODING;
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}
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const mimeType = this.getMimeType(module);
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let encodedContent;
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if (
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module.resourceResolveData &&
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module.resourceResolveData.encoding === encoding &&
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decodeDataUriContent(
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module.resourceResolveData.encoding,
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module.resourceResolveData.encodedContent
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).equals(originalSource.buffer())
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) {
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encodedContent = module.resourceResolveData.encodedContent;
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} else {
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encodedContent = encodeDataUri(encoding, originalSource);
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}
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encodedSource = `data:${mimeType}${
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encoding ? `;${encoding}` : ""
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},${encodedContent}`;
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}
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const data =
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/** @type {NonNullable<GenerateContext["getData"]>} */
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(getData)();
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data.set("url", Buffer.from(encodedSource));
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content = JSON.stringify(encodedSource);
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} else {
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const assetModuleFilename =
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this.filename ||
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/** @type {AssetModuleFilename} */
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(runtimeTemplate.outputOptions.assetModuleFilename);
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const hash = createHash(
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/** @type {Algorithm} */
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(runtimeTemplate.outputOptions.hashFunction)
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);
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if (runtimeTemplate.outputOptions.hashSalt) {
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hash.update(runtimeTemplate.outputOptions.hashSalt);
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}
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hash.update(originalSource.buffer());
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const fullHash = /** @type {string} */ (
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hash.digest(runtimeTemplate.outputOptions.hashDigest)
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);
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const contentHash = nonNumericOnlyHash(
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fullHash,
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/** @type {number} */
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(runtimeTemplate.outputOptions.hashDigestLength)
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);
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/** @type {BuildInfo} */
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(module.buildInfo).fullContentHash = fullHash;
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const sourceFilename = this.getSourceFileName(
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module,
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runtimeTemplate
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);
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|
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let { path: filename, info: assetInfo } =
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|
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runtimeTemplate.compilation.getAssetPathWithInfo(
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assetModuleFilename,
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|
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{
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|
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module,
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|
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runtime,
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|
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filename: sourceFilename,
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|
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chunkGraph,
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|
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contentHash
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||
|
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}
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);
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|
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let assetPath;
|
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|
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let assetPathForCss;
|
||
|
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if (this.publicPath !== undefined) {
|
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|
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const { path, info } =
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|
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runtimeTemplate.compilation.getAssetPathWithInfo(
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|
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this.publicPath,
|
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|
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{
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|
|
module,
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|
|
runtime,
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|
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filename: sourceFilename,
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|
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chunkGraph,
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||
|
|
contentHash
|
||
|
|
}
|
||
|
|
);
|
||
|
|
assetInfo = mergeAssetInfo(assetInfo, info);
|
||
|
|
assetPath = JSON.stringify(path + filename);
|
||
|
|
assetPathForCss = path + filename;
|
||
|
|
} else {
|
||
|
|
runtimeRequirements.add(RuntimeGlobals.publicPath); // add __webpack_require__.p
|
||
|
|
assetPath = runtimeTemplate.concatenation(
|
||
|
|
{ expr: RuntimeGlobals.publicPath },
|
||
|
|
filename
|
||
|
|
);
|
||
|
|
const compilation = runtimeTemplate.compilation;
|
||
|
|
const path =
|
||
|
|
compilation.outputOptions.publicPath === "auto"
|
||
|
|
? CssUrlDependency.PUBLIC_PATH_AUTO
|
||
|
|
: compilation.getAssetPath(
|
||
|
|
/** @type {TemplatePath} */
|
||
|
|
(compilation.outputOptions.publicPath),
|
||
|
|
{
|
||
|
|
hash: compilation.hash
|
||
|
|
}
|
||
|
|
);
|
||
|
|
assetPathForCss = path + filename;
|
||
|
|
}
|
||
|
|
assetInfo = {
|
||
|
|
sourceFilename,
|
||
|
|
...assetInfo
|
||
|
|
};
|
||
|
|
if (this.outputPath) {
|
||
|
|
const { path: outputPath, info } =
|
||
|
|
runtimeTemplate.compilation.getAssetPathWithInfo(
|
||
|
|
this.outputPath,
|
||
|
|
{
|
||
|
|
module,
|
||
|
|
runtime,
|
||
|
|
filename: sourceFilename,
|
||
|
|
chunkGraph,
|
||
|
|
contentHash
|
||
|
|
}
|
||
|
|
);
|
||
|
|
assetInfo = mergeAssetInfo(assetInfo, info);
|
||
|
|
filename = path.posix.join(outputPath, filename);
|
||
|
|
}
|
||
|
|
/** @type {BuildInfo} */
|
||
|
|
(module.buildInfo).filename = filename;
|
||
|
|
/** @type {BuildInfo} */
|
||
|
|
(module.buildInfo).assetInfo = assetInfo;
|
||
|
|
if (getData) {
|
||
|
|
// Due to code generation caching module.buildInfo.XXX can't used to store such information
|
||
|
|
// It need to be stored in the code generation results instead, where it's cached too
|
||
|
|
// TODO webpack 6 For back-compat reasons we also store in on module.buildInfo
|
||
|
|
const data = getData();
|
||
|
|
data.set("fullContentHash", fullHash);
|
||
|
|
data.set("filename", filename);
|
||
|
|
data.set("assetInfo", assetInfo);
|
||
|
|
data.set("assetPathForCss", assetPathForCss);
|
||
|
|
}
|
||
|
|
content = assetPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (concatenationScope) {
|
||
|
|
concatenationScope.registerNamespaceExport(
|
||
|
|
ConcatenationScope.NAMESPACE_OBJECT_EXPORT
|
||
|
|
);
|
||
|
|
return new RawSource(
|
||
|
|
`${runtimeTemplate.supportsConst() ? "const" : "var"} ${
|
||
|
|
ConcatenationScope.NAMESPACE_OBJECT_EXPORT
|
||
|
|
} = ${content};`
|
||
|
|
);
|
||
|
|
}
|
||
|
|
runtimeRequirements.add(RuntimeGlobals.module);
|
||
|
|
return new RawSource(`${RuntimeGlobals.module}.exports = ${content};`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {NormalModule} module fresh module
|
||
|
|
* @returns {Set<string>} available types (do not mutate)
|
||
|
|
*/
|
||
|
|
getTypes(module) {
|
||
|
|
if ((module.buildInfo && module.buildInfo.dataUrl) || this.emit === false) {
|
||
|
|
return JS_TYPES;
|
||
|
|
}
|
||
|
|
return JS_AND_ASSET_TYPES;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {NormalModule} module the module
|
||
|
|
* @param {string=} type source type
|
||
|
|
* @returns {number} estimate size of the module
|
||
|
|
*/
|
||
|
|
getSize(module, type) {
|
||
|
|
switch (type) {
|
||
|
|
case ASSET_MODULE_TYPE: {
|
||
|
|
const originalSource = module.originalSource();
|
||
|
|
|
||
|
|
if (!originalSource) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return originalSource.size();
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
if (module.buildInfo && module.buildInfo.dataUrl) {
|
||
|
|
const originalSource = module.originalSource();
|
||
|
|
|
||
|
|
if (!originalSource) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// roughly for data url
|
||
|
|
// Example: m.exports="data:image/png;base64,ag82/f+2=="
|
||
|
|
// 4/3 = base64 encoding
|
||
|
|
// 34 = ~ data url header + footer + rounding
|
||
|
|
return originalSource.size() * 1.34 + 36;
|
||
|
|
}
|
||
|
|
// it's only estimated so this number is probably fine
|
||
|
|
// Example: m.exports=r.p+"0123456789012345678901.ext"
|
||
|
|
return 42;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Hash} hash hash that will be modified
|
||
|
|
* @param {UpdateHashContext} updateHashContext context for updating hash
|
||
|
|
*/
|
||
|
|
updateHash(hash, updateHashContext) {
|
||
|
|
const { module } = updateHashContext;
|
||
|
|
if (
|
||
|
|
/** @type {BuildInfo} */
|
||
|
|
(module.buildInfo).dataUrl
|
||
|
|
) {
|
||
|
|
hash.update("data-url");
|
||
|
|
// this.dataUrlOptions as function should be pure and only depend on input source and filename
|
||
|
|
// therefore it doesn't need to be hashed
|
||
|
|
if (typeof this.dataUrlOptions === "function") {
|
||
|
|
const ident = /** @type {{ ident?: string }} */ (this.dataUrlOptions)
|
||
|
|
.ident;
|
||
|
|
if (ident) hash.update(ident);
|
||
|
|
} else {
|
||
|
|
const dataUrlOptions =
|
||
|
|
/** @type {AssetGeneratorDataUrlOptions} */
|
||
|
|
(this.dataUrlOptions);
|
||
|
|
if (
|
||
|
|
dataUrlOptions.encoding &&
|
||
|
|
dataUrlOptions.encoding !== DEFAULT_ENCODING
|
||
|
|
) {
|
||
|
|
hash.update(dataUrlOptions.encoding);
|
||
|
|
}
|
||
|
|
if (dataUrlOptions.mimetype) hash.update(dataUrlOptions.mimetype);
|
||
|
|
// computed mimetype depends only on module filename which is already part of the hash
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
hash.update("resource");
|
||
|
|
|
||
|
|
const { module, chunkGraph, runtime } = updateHashContext;
|
||
|
|
const runtimeTemplate =
|
||
|
|
/** @type {NonNullable<UpdateHashContext["runtimeTemplate"]>} */
|
||
|
|
(updateHashContext.runtimeTemplate);
|
||
|
|
|
||
|
|
const pathData = {
|
||
|
|
module,
|
||
|
|
runtime,
|
||
|
|
filename: this.getSourceFileName(module, runtimeTemplate),
|
||
|
|
chunkGraph,
|
||
|
|
contentHash: runtimeTemplate.contentHashReplacement
|
||
|
|
};
|
||
|
|
|
||
|
|
if (typeof this.publicPath === "function") {
|
||
|
|
hash.update("path");
|
||
|
|
const assetInfo = {};
|
||
|
|
hash.update(this.publicPath(pathData, assetInfo));
|
||
|
|
hash.update(JSON.stringify(assetInfo));
|
||
|
|
} else if (this.publicPath) {
|
||
|
|
hash.update("path");
|
||
|
|
hash.update(this.publicPath);
|
||
|
|
} else {
|
||
|
|
hash.update("no-path");
|
||
|
|
}
|
||
|
|
|
||
|
|
const assetModuleFilename =
|
||
|
|
this.filename ||
|
||
|
|
/** @type {AssetModuleFilename} */
|
||
|
|
(runtimeTemplate.outputOptions.assetModuleFilename);
|
||
|
|
const { path: filename, info } =
|
||
|
|
runtimeTemplate.compilation.getAssetPathWithInfo(
|
||
|
|
assetModuleFilename,
|
||
|
|
pathData
|
||
|
|
);
|
||
|
|
hash.update(filename);
|
||
|
|
hash.update(JSON.stringify(info));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = AssetGenerator;
|