60 lines
1.3 KiB
JavaScript
60 lines
1.3 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_BASIC, STAGE_ADVANCED } = require("../OptimizationStages");
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../Compiler")} Compiler */
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const PLUGIN_NAME = "RemoveEmptyChunksPlugin";
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class RemoveEmptyChunksPlugin {
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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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compiler.hooks.compilation.tap(PLUGIN_NAME, compilation => {
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/**
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* @param {Iterable<Chunk>} chunks the chunks array
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* @returns {void}
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*/
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const handler = chunks => {
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const chunkGraph = compilation.chunkGraph;
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for (const chunk of chunks) {
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if (
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chunkGraph.getNumberOfChunkModules(chunk) === 0 &&
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!chunk.hasRuntime() &&
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chunkGraph.getNumberOfEntryModules(chunk) === 0
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) {
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compilation.chunkGraph.disconnectChunk(chunk);
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compilation.chunks.delete(chunk);
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}
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}
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};
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// TODO do it once
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compilation.hooks.optimizeChunks.tap(
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{
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name: PLUGIN_NAME,
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stage: STAGE_BASIC
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},
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handler
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);
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compilation.hooks.optimizeChunks.tap(
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{
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name: PLUGIN_NAME,
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stage: STAGE_ADVANCED
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},
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handler
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);
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});
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}
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}
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module.exports = RemoveEmptyChunksPlugin;
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