forked from zhurui/management
58 lines
1.4 KiB
JavaScript
58 lines
1.4 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const asyncLib = require("neo-async");
|
|
const PrefetchDependency = require("./dependencies/PrefetchDependency");
|
|
const NormalModule = require("./NormalModule");
|
|
|
|
/** @typedef {import("./Compiler")} Compiler */
|
|
|
|
class AutomaticPrefetchPlugin {
|
|
/**
|
|
* Apply the plugin
|
|
* @param {Compiler} compiler Webpack Compiler
|
|
* @returns {void}
|
|
*/
|
|
apply(compiler) {
|
|
compiler.hooks.compilation.tap(
|
|
"AutomaticPrefetchPlugin",
|
|
(compilation, { normalModuleFactory }) => {
|
|
compilation.dependencyFactories.set(
|
|
PrefetchDependency,
|
|
normalModuleFactory
|
|
);
|
|
}
|
|
);
|
|
let lastModules = null;
|
|
compiler.hooks.afterCompile.tap("AutomaticPrefetchPlugin", compilation => {
|
|
lastModules = compilation.modules
|
|
.filter(m => m instanceof NormalModule)
|
|
.map((/** @type {NormalModule} */ m) => ({
|
|
context: m.context,
|
|
request: m.request
|
|
}));
|
|
});
|
|
compiler.hooks.make.tapAsync(
|
|
"AutomaticPrefetchPlugin",
|
|
(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;
|