You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.5 KiB
67 lines
1.5 KiB
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const asyncLib = require("neo-async");
|
|
const NormalModule = require("./NormalModule");
|
|
const PrefetchDependency = require("./dependencies/PrefetchDependency");
|
|
|
|
/** @typedef {import("./Compiler")} Compiler */
|
|
|
|
class AutomaticPrefetchPlugin {
|
|
/**
|
|
* Apply the plugin
|
|
* @param {Compiler} compiler the compiler instance
|
|
* @returns {void}
|
|
*/
|
|
apply(compiler) {
|
|
compiler.hooks.compilation.tap(
|
|
"AutomaticPrefetchPlugin",
|
|
(compilation, { normalModuleFactory }) => {
|
|
compilation.dependencyFactories.set(
|
|
PrefetchDependency,
|
|
normalModuleFactory
|
|
);
|
|
}
|
|
);
|
|
/** @type {{context: string | null, request: string}[] | null} */
|
|
let lastModules = null;
|
|
compiler.hooks.afterCompile.tap("AutomaticPrefetchPlugin", compilation => {
|
|
lastModules = [];
|
|
|
|
for (const m of compilation.modules) {
|
|
if (m instanceof NormalModule) {
|
|
lastModules.push({
|
|
context: m.context,
|
|
request: m.request
|
|
});
|
|
}
|
|
}
|
|
});
|
|
compiler.hooks.make.tapAsync(
|
|
"AutomaticPrefetchPlugin",
|
|
(compilation, callback) => {
|
|
if (!lastModules) return callback();
|
|
asyncLib.each(
|
|
lastModules,
|
|
(m, callback) => {
|
|
compilation.addModuleChain(
|
|
m.context || compiler.context,
|
|
new PrefetchDependency(`!!${m.request}`),
|
|
callback
|
|
);
|
|
},
|
|
err => {
|
|
lastModules = null;
|
|
callback(err);
|
|
}
|
|
);
|
|
}
|
|
);
|
|
}
|
|
}
|
|
module.exports = AutomaticPrefetchPlugin;
|