72 lines
1.8 KiB
JavaScript
72 lines
1.8 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 { join, dirname } = require("./util/fs");
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {function(TODO): void} ModuleReplacer */
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class NormalModuleReplacementPlugin {
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/**
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* Create an instance of the plugin
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* @param {RegExp} resourceRegExp the resource matcher
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* @param {string|ModuleReplacer} newResource the resource replacement
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*/
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constructor(resourceRegExp, newResource) {
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this.resourceRegExp = resourceRegExp;
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this.newResource = newResource;
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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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const resourceRegExp = this.resourceRegExp;
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const newResource = this.newResource;
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compiler.hooks.normalModuleFactory.tap(
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"NormalModuleReplacementPlugin",
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nmf => {
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nmf.hooks.beforeResolve.tap("NormalModuleReplacementPlugin", result => {
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if (resourceRegExp.test(result.request)) {
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if (typeof newResource === "function") {
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newResource(result);
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} else {
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result.request = newResource;
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}
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}
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});
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nmf.hooks.afterResolve.tap("NormalModuleReplacementPlugin", result => {
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const createData = result.createData;
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if (resourceRegExp.test(createData.resource)) {
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if (typeof newResource === "function") {
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newResource(result);
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} else {
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const fs = compiler.inputFileSystem;
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if (
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newResource.startsWith("/") ||
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(newResource.length > 1 && newResource[1] === ":")
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) {
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createData.resource = newResource;
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} else {
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createData.resource = join(
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fs,
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dirname(fs, createData.resource),
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newResource
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);
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}
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}
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}
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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 = NormalModuleReplacementPlugin;
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