/*
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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 } = require("webpack-sources");
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const RuntimeGlobals = require("../RuntimeGlobals");
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const Template = require("../Template");
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const ConcatenatedModule = require("../optimize/ConcatenatedModule");
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const propertyAccess = require("../util/propertyAccess");
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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").LibraryOptions} LibraryOptions */
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/** @typedef {import("../../declarations/WebpackOptions").LibraryType} LibraryType */
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../Compilation").ChunkHashContext} ChunkHashContext */
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Module")} Module */
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/** @typedef {import("../Module").BuildMeta} BuildMeta */
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/** @typedef {import("../javascript/JavascriptModulesPlugin").StartupRenderContext} StartupRenderContext */
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/** @typedef {import("../util/Hash")} Hash */
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/**
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* @template T
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* @typedef {import("./AbstractLibraryPlugin").LibraryContext<T>} LibraryContext<T>
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*/
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/**
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* @typedef {object} ModuleLibraryPluginOptions
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* @property {LibraryType} type
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*/
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/**
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* @typedef {object} ModuleLibraryPluginParsed
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* @property {string} name
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* @property {string | string[]=} export
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*/
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const PLUGIN_NAME = "ModuleLibraryPlugin";
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/**
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* @typedef {ModuleLibraryPluginParsed} T
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* @extends {AbstractLibraryPlugin<ModuleLibraryPluginParsed>}
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*/
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class ModuleLibraryPlugin extends AbstractLibraryPlugin {
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/**
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* @param {ModuleLibraryPluginOptions} options the plugin options
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*/
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constructor(options) {
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super({
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pluginName: "ModuleLibraryPlugin",
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type: options.type
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});
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}
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/**
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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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super.apply(compiler);
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compiler.hooks.thisCompilation.tap(PLUGIN_NAME, compilation => {
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const { exportsDefinitions } =
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ConcatenatedModule.getCompilationHooks(compilation);
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exportsDefinitions.tap(PLUGIN_NAME, (definitions, module) => {
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// If we have connections not all modules were concatenated, so we need the wrapper
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const connections =
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compilation.moduleGraph.getIncomingConnections(module);
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for (const connection of connections) {
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if (connection.originModule) {
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return false;
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}
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}
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// Runtime and splitting chunks now requires the wrapper too
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for (const chunk of compilation.chunkGraph.getModuleChunksIterable(
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module
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)) {
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if (!chunk.hasRuntime()) {
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return false;
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}
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}
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return true;
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});
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});
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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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const { name } = library;
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if (name) {
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throw new Error(
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`Library name must be unset. ${AbstractLibraryPlugin.COMMON_LIBRARY_NAME_MESSAGE}`
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);
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}
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const _name = /** @type {string} */ (name);
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return {
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name: _name,
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export: library.export
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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 {Module} module module
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* @param {StartupRenderContext} 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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renderStartup(
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source,
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module,
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{ moduleGraph, chunk, codeGenerationResults },
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{ options, compilation }
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) {
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const result = new ConcatSource(source);
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const exportsInfo = options.export
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? [
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moduleGraph.getExportInfo(
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module,
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Array.isArray(options.export) ? options.export[0] : options.export
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)
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]
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: moduleGraph.getExportsInfo(module).orderedExports;
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const definitions =
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/** @type {BuildMeta} */
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(module.buildMeta).exportsFinalName || {};
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/** @type {string[]} */
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const shortHandedExports = [];
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/** @type {[string, string][]} */
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const exports = [];
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const isAsync = moduleGraph.isAsync(module);
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if (isAsync) {
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result.add(
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`${RuntimeGlobals.exports} = await ${RuntimeGlobals.exports};\n`
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);
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}
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const varType = compilation.outputOptions.environment.const
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? "const"
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: "var";
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for (const exportInfo of exportsInfo) {
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if (!exportInfo.provided) continue;
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let shouldContinue = false;
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const reexport = exportInfo.findTarget(moduleGraph, _m => true);
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if (reexport) {
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const exp = moduleGraph.getExportsInfo(reexport.module);
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for (const reexportInfo of exp.orderedExports) {
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if (
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reexportInfo.provided === false &&
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reexportInfo.name !== "default" &&
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reexportInfo.name === /** @type {string[]} */ (reexport.export)[0]
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) {
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shouldContinue = true;
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}
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}
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}
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if (shouldContinue) continue;
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const originalName = exportInfo.name;
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const usedName =
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/** @type {string} */
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(exportInfo.getUsedName(originalName, chunk.runtime));
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/** @type {string | undefined} */
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const definition = definitions[usedName];
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const finalName =
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definition ||
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`${RuntimeGlobals.exports}${Template.toIdentifier(originalName)}`;
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if (!definition) {
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result.add(
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`${varType} ${finalName} = ${RuntimeGlobals.exports}${propertyAccess([
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usedName
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])};\n`
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);
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}
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if (
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finalName &&
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(finalName.includes(".") ||
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finalName.includes("[") ||
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finalName.includes("("))
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) {
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if (exportInfo.isReexport()) {
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const { data } = codeGenerationResults.get(module, chunk.runtime);
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const topLevelDeclarations =
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(data && data.get("topLevelDeclarations")) ||
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(module.buildInfo && module.buildInfo.topLevelDeclarations);
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if (topLevelDeclarations && topLevelDeclarations.has(originalName)) {
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const name = `${RuntimeGlobals.exports}${Template.toIdentifier(originalName)}`;
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result.add(`${varType} ${name} = ${finalName};\n`);
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shortHandedExports.push(`${name} as ${originalName}`);
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} else {
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exports.push([originalName, finalName]);
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}
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} else {
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exports.push([originalName, finalName]);
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}
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} else {
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shortHandedExports.push(
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definition && finalName === originalName
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? finalName
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: `${finalName} as ${originalName}`
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);
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}
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}
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if (shortHandedExports.length > 0) {
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result.add(`export { ${shortHandedExports.join(", ")} };\n`);
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}
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for (const [exportName, final] of exports) {
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result.add(`export ${varType} ${exportName} = ${final};\n`);
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}
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return result;
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}
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}
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module.exports = ModuleLibraryPlugin;
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