aaac7fed
 liuqimichale
add
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const asyncLib = require("async");
const PrefetchDependency = require("./dependencies/PrefetchDependency");
const NormalModule = require("./NormalModule");
class AutomaticPrefetchPlugin {
apply(compiler) {
compiler.plugin("compilation", (compilation, params) => {
const normalModuleFactory = params.normalModuleFactory;
compilation.dependencyFactories.set(PrefetchDependency, normalModuleFactory);
});
let lastModules = null;
compiler.plugin("after-compile", (compilation, callback) => {
lastModules = compilation.modules
.filter(m => m instanceof NormalModule)
.map(m => ({
context: m.context,
request: m.request
}));
callback();
});
compiler.plugin("make", (compilation, callback) => {
if(!lastModules) return callback();
asyncLib.forEach(lastModules, (m, callback) => {
compilation.prefetch(m.context || compiler.context, new PrefetchDependency(m.request), callback);
}, callback);
});
}
}
module.exports = AutomaticPrefetchPlugin;
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