mirror of https://github.com/webpack/webpack.git
36 lines
1.1 KiB
JavaScript
36 lines
1.1 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 asyncLib = require("async");
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const PrefetchDependency = require("./dependencies/PrefetchDependency");
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const NormalModule = require("./NormalModule");
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class AutomaticPrefetchPlugin {
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apply(compiler) {
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compiler.hooks.compilation.tap("AutomaticPrefetchPlugin", (compilation, {
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normalModuleFactory
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}) => {
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compilation.dependencyFactories.set(PrefetchDependency, normalModuleFactory);
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});
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let lastModules = null;
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compiler.hooks.afterCompile.tap("AutomaticPrefetchPlugin", (compilation) => {
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lastModules = compilation.modules
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.filter(m => m instanceof NormalModule)
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.map(m => ({
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context: m.context,
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request: m.request
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}));
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});
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compiler.hooks.make.tapAsync("AutomaticPrefetchPlugin", (compilation, callback) => {
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if(!lastModules) return callback();
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asyncLib.forEach(lastModules, (m, callback) => {
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compilation.prefetch(m.context || compiler.context, new PrefetchDependency(m.request), callback);
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}, callback);
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});
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}
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}
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module.exports = AutomaticPrefetchPlugin;
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