57 lines
1.2 KiB
JavaScript
57 lines
1.2 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 PrefetchDependency = require("./dependencies/PrefetchDependency");
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/** @typedef {import("./Compiler")} Compiler */
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const PLUGIN_NAME = "PrefetchPlugin";
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class PrefetchPlugin {
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/**
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* @param {string} context context or request if context is not set
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* @param {string=} request request
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*/
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constructor(context, request) {
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if (request) {
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this.context = context;
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this.request = request;
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} else {
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this.context = null;
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this.request = context;
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}
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}
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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(
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PLUGIN_NAME,
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(compilation, { normalModuleFactory }) => {
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compilation.dependencyFactories.set(
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PrefetchDependency,
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normalModuleFactory
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);
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}
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);
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compiler.hooks.make.tapAsync(PLUGIN_NAME, (compilation, callback) => {
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compilation.addModuleChain(
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this.context || compiler.context,
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new PrefetchDependency(this.request),
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err => {
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callback(err);
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}
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);
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});
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}
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}
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module.exports = PrefetchPlugin;
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