mirror of https://github.com/webpack/webpack.git
331 lines
9.5 KiB
JavaScript
331 lines
9.5 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { ConcatSource, OriginalSource } = require("webpack-sources");
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const ExternalModule = require("../ExternalModule");
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const Template = require("../Template");
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const AbstractLibraryPlugin = require("./AbstractLibraryPlugin");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryCustomUmdCommentObject} LibraryCustomUmdCommentObject */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryCustomUmdObject} LibraryCustomUmdObject */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryName} LibraryName */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryOptions} LibraryOptions */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryType} LibraryType */
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../javascript/JavascriptModulesPlugin").RenderContext} RenderContext */
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/** @typedef {import("../util/Hash")} Hash */
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/** @template T @typedef {import("./AbstractLibraryPlugin").LibraryContext<T>} LibraryContext<T> */
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/**
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* @param {string[]} accessor the accessor to convert to path
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* @returns {string} the path
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*/
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const accessorToObjectAccess = accessor => {
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return accessor.map(a => `[${JSON.stringify(a)}]`).join("");
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};
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/**
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* @param {string|undefined} base the path prefix
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* @param {string|string[]} accessor the accessor
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* @param {string=} joinWith the element separator
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* @returns {string} the path
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*/
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const accessorAccess = (base, accessor, joinWith = ", ") => {
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const accessors = Array.isArray(accessor) ? accessor : [accessor];
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return accessors
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.map((_, idx) => {
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const a = base
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? base + accessorToObjectAccess(accessors.slice(0, idx + 1))
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: accessors[0] + accessorToObjectAccess(accessors.slice(1, idx + 1));
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if (idx === accessors.length - 1) return a;
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if (idx === 0 && base === undefined)
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return `${a} = typeof ${a} === "object" ? ${a} : {}`;
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return `${a} = ${a} || {}`;
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})
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.join(joinWith);
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};
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/** @typedef {string | string[] | LibraryCustomUmdObject} UmdLibraryPluginName */
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/**
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* @typedef {Object} UmdLibraryPluginOptions
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* @property {LibraryType} type
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* @property {boolean=} optionalAmdExternalAsGlobal
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*/
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/**
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* @typedef {Object} UmdLibraryPluginParsed
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* @property {string | string[]} name
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* @property {LibraryCustomUmdObject} names
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* @property {string | LibraryCustomUmdCommentObject} auxiliaryComment
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* @property {boolean} namedDefine
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*/
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/**
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* @typedef {UmdLibraryPluginParsed} T
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* @extends {AbstractLibraryPlugin<UmdLibraryPluginParsed>}
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*/
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class UmdLibraryPlugin extends AbstractLibraryPlugin {
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/**
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* @param {UmdLibraryPluginOptions} options the plugin option
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*/
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constructor(options) {
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super({
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pluginName: "UmdLibraryPlugin",
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type: options.type
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});
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this.optionalAmdExternalAsGlobal = options.optionalAmdExternalAsGlobal;
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}
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/**
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* @param {LibraryOptions} library normalized library option
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* @returns {T | false} preprocess as needed by overriding
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*/
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parseOptions(library) {
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/** @type {LibraryName} */
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let name;
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/** @type {LibraryCustomUmdObject} */
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let names;
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if (typeof library.name === "object" && !Array.isArray(library.name)) {
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name = library.name.root || library.name.amd || library.name.commonjs;
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names = library.name;
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} else {
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name = library.name;
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const singleName = Array.isArray(name) ? name[0] : name;
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names = {
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commonjs: singleName,
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root: library.name,
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amd: singleName
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};
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}
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return {
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name,
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names,
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auxiliaryComment: library.auxiliaryComment,
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namedDefine: library.umdNamedDefine
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};
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}
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/**
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* @param {Source} source source
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* @param {RenderContext} renderContext render context
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* @param {LibraryContext<T>} libraryContext context
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* @returns {Source} source with library export
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*/
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render(
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source,
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{ chunkGraph, runtimeTemplate, chunk, moduleGraph },
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{ options, compilation }
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) {
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const modules = chunkGraph
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.getChunkModules(chunk)
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.filter(
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m =>
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m instanceof ExternalModule &&
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(m.externalType === "umd" || m.externalType === "umd2")
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);
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let externals = /** @type {ExternalModule[]} */ (modules);
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/** @type {ExternalModule[]} */
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const optionalExternals = [];
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/** @type {ExternalModule[]} */
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let requiredExternals = [];
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if (this.optionalAmdExternalAsGlobal) {
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for (const m of externals) {
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if (m.isOptional(moduleGraph)) {
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optionalExternals.push(m);
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} else {
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requiredExternals.push(m);
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}
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}
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externals = requiredExternals.concat(optionalExternals);
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} else {
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requiredExternals = externals;
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}
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const replaceKeys = str => {
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return compilation.getPath(str, {
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chunk
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});
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};
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const externalsDepsArray = modules => {
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return `[${replaceKeys(
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modules
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.map(m =>
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JSON.stringify(
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typeof m.request === "object" ? m.request.amd : m.request
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)
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)
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.join(", ")
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)}]`;
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};
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const externalsRootArray = modules => {
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return replaceKeys(
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modules
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.map(m => {
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let request = m.request;
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if (typeof request === "object") request = request.root;
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return `root${accessorToObjectAccess([].concat(request))}`;
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})
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.join(", ")
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);
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};
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const externalsRequireArray = type => {
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return replaceKeys(
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externals
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.map(m => {
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let expr;
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let request = m.request;
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if (typeof request === "object") {
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request = request[type];
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}
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if (request === undefined) {
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throw new Error(
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"Missing external configuration for type:" + type
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);
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}
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if (Array.isArray(request)) {
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expr = `require(${JSON.stringify(
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request[0]
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)})${accessorToObjectAccess(request.slice(1))}`;
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} else {
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expr = `require(${JSON.stringify(request)})`;
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}
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if (m.isOptional(moduleGraph)) {
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expr = `(function webpackLoadOptionalExternalModule() { try { return ${expr}; } catch(e) {} }())`;
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}
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return expr;
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})
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.join(", ")
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);
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};
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/**
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* @param {ExternalModule[]} modules external modules
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* @returns {string} arguments
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*/
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const externalsArguments = modules => {
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return modules
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.map(
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m =>
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`__WEBPACK_EXTERNAL_MODULE_${Template.toIdentifier(
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`${chunkGraph.getModuleId(m)}`
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)}__`
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)
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.join(", ");
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};
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const libraryName = library => {
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return JSON.stringify(replaceKeys([].concat(library).pop()));
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};
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let amdFactory;
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if (optionalExternals.length > 0) {
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const wrapperArguments = externalsArguments(requiredExternals);
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const factoryArguments =
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requiredExternals.length > 0
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? externalsArguments(requiredExternals) +
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", " +
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externalsRootArray(optionalExternals)
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: externalsRootArray(optionalExternals);
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amdFactory =
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`function webpackLoadOptionalExternalModuleAmd(${wrapperArguments}) {\n` +
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` return factory(${factoryArguments});\n` +
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" }";
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} else {
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amdFactory = "factory";
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}
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const { auxiliaryComment, namedDefine, names } = options;
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const getAuxiliaryComment = type => {
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if (auxiliaryComment) {
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if (typeof auxiliaryComment === "string")
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return "\t//" + auxiliaryComment + "\n";
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if (auxiliaryComment[type])
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return "\t//" + auxiliaryComment[type] + "\n";
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}
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return "";
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};
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return new ConcatSource(
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new OriginalSource(
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"(function webpackUniversalModuleDefinition(root, factory) {\n" +
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getAuxiliaryComment("commonjs2") +
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" if(typeof exports === 'object' && typeof module === 'object')\n" +
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" module.exports = factory(" +
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externalsRequireArray("commonjs2") +
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");\n" +
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getAuxiliaryComment("amd") +
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" else if(typeof define === 'function' && define.amd)\n" +
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(requiredExternals.length > 0
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? names.amd && namedDefine === true
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? " define(" +
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libraryName(names.amd) +
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", " +
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externalsDepsArray(requiredExternals) +
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", " +
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amdFactory +
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");\n"
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: " define(" +
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externalsDepsArray(requiredExternals) +
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", " +
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amdFactory +
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");\n"
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: names.amd && namedDefine === true
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? " define(" +
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libraryName(names.amd) +
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", [], " +
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amdFactory +
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");\n"
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: " define([], " + amdFactory + ");\n") +
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(names.root || names.commonjs
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? getAuxiliaryComment("commonjs") +
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" else if(typeof exports === 'object')\n" +
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" exports[" +
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libraryName(names.commonjs || names.root) +
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"] = factory(" +
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externalsRequireArray("commonjs") +
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");\n" +
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getAuxiliaryComment("root") +
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" else\n" +
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" " +
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replaceKeys(
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accessorAccess("root", names.root || names.commonjs)
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) +
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" = factory(" +
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externalsRootArray(externals) +
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");\n"
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: " else {\n" +
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(externals.length > 0
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? " var a = typeof exports === 'object' ? factory(" +
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externalsRequireArray("commonjs") +
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") : factory(" +
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externalsRootArray(externals) +
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");\n"
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: " var a = factory();\n") +
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" for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];\n" +
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" }\n") +
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`})(${runtimeTemplate.outputOptions.globalObject}, ${
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runtimeTemplate.supportsArrowFunction()
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? `(${externalsArguments(externals)}) =>`
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: `function(${externalsArguments(externals)})`
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} {\nreturn `,
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"webpack/universalModuleDefinition"
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),
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source,
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";\n})"
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);
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}
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}
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module.exports = UmdLibraryPlugin;
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