mirror of https://github.com/webpack/webpack.git
62 lines
1.6 KiB
JavaScript
62 lines
1.6 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 { STAGE_ADVANCED } = require("../OptimizationStages");
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/** @typedef {import("../Compiler")} Compiler */
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class RuntimeChunkPlugin {
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constructor(options) {
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this.options = {
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name: entrypoint => `runtime~${entrypoint.name}`,
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...options
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};
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}
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/**
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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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compiler.hooks.thisCompilation.tap("RuntimeChunkPlugin", compilation => {
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compilation.hooks.optimizeChunks.tap(
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{
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name: "RuntimeChunkPlugin",
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stage: STAGE_ADVANCED
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},
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() => {
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const chunkGraph = compilation.chunkGraph;
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for (const entrypoint of compilation.entrypoints.values()) {
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const chunk = entrypoint.getRuntimeChunk();
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// Only insert a runtime chunk when the current runtime chunk is part of the entrypoint
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if (!entrypoint.chunks.includes(chunk)) continue;
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// Determine runtime chunk name
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let name = this.options.name;
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if (typeof name === "function") {
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name = name(entrypoint);
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}
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// Avoid adding runtime chunk twice
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if (
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chunkGraph.getNumberOfChunkModules(chunk) > 0 ||
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!chunk.preventIntegration ||
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chunk.name !== name
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) {
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const newChunk = compilation.addChunk(name);
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newChunk.preventIntegration = true;
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entrypoint.unshiftChunk(newChunk);
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newChunk.addGroup(entrypoint);
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entrypoint.setRuntimeChunk(newChunk);
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}
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}
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}
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);
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});
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}
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}
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module.exports = RuntimeChunkPlugin;
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