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- /*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
- */
- "use strict";
-
- const path = require("path");
- const ContextElementDependency = require("./dependencies/ContextElementDependency");
-
- class ContextReplacementPlugin {
- constructor(
- resourceRegExp,
- newContentResource,
- newContentRecursive,
- newContentRegExp
- ) {
- this.resourceRegExp = resourceRegExp;
-
- if (typeof newContentResource === "function") {
- this.newContentCallback = newContentResource;
- } else if (
- typeof newContentResource === "string" &&
- typeof newContentRecursive === "object"
- ) {
- this.newContentResource = newContentResource;
- this.newContentCreateContextMap = (fs, callback) => {
- callback(null, newContentRecursive);
- };
- } else if (
- typeof newContentResource === "string" &&
- typeof newContentRecursive === "function"
- ) {
- this.newContentResource = newContentResource;
- this.newContentCreateContextMap = newContentRecursive;
- } else {
- if (typeof newContentResource !== "string") {
- newContentRegExp = newContentRecursive;
- newContentRecursive = newContentResource;
- newContentResource = undefined;
- }
- if (typeof newContentRecursive !== "boolean") {
- newContentRegExp = newContentRecursive;
- newContentRecursive = undefined;
- }
- this.newContentResource = newContentResource;
- this.newContentRecursive = newContentRecursive;
- this.newContentRegExp = newContentRegExp;
- }
- }
-
- apply(compiler) {
- const resourceRegExp = this.resourceRegExp;
- const newContentCallback = this.newContentCallback;
- const newContentResource = this.newContentResource;
- const newContentRecursive = this.newContentRecursive;
- const newContentRegExp = this.newContentRegExp;
- const newContentCreateContextMap = this.newContentCreateContextMap;
-
- compiler.hooks.contextModuleFactory.tap("ContextReplacementPlugin", cmf => {
- cmf.hooks.beforeResolve.tap("ContextReplacementPlugin", result => {
- if (!result) return;
- if (resourceRegExp.test(result.request)) {
- if (newContentResource !== undefined) {
- result.request = newContentResource;
- }
- if (newContentRecursive !== undefined) {
- result.recursive = newContentRecursive;
- }
- if (newContentRegExp !== undefined) {
- result.regExp = newContentRegExp;
- }
- if (typeof newContentCallback === "function") {
- newContentCallback(result);
- } else {
- for (const d of result.dependencies) {
- if (d.critical) d.critical = false;
- }
- }
- }
- return result;
- });
- cmf.hooks.afterResolve.tap("ContextReplacementPlugin", result => {
- if (!result) return;
- if (resourceRegExp.test(result.resource)) {
- if (newContentResource !== undefined) {
- result.resource = path.resolve(result.resource, newContentResource);
- }
- if (newContentRecursive !== undefined) {
- result.recursive = newContentRecursive;
- }
- if (newContentRegExp !== undefined) {
- result.regExp = newContentRegExp;
- }
- if (typeof newContentCreateContextMap === "function") {
- result.resolveDependencies = createResolveDependenciesFromContextMap(
- newContentCreateContextMap
- );
- }
- if (typeof newContentCallback === "function") {
- const origResource = result.resource;
- newContentCallback(result);
- if (result.resource !== origResource) {
- result.resource = path.resolve(origResource, result.resource);
- }
- } else {
- for (const d of result.dependencies) {
- if (d.critical) d.critical = false;
- }
- }
- }
- return result;
- });
- });
- }
- }
-
- const createResolveDependenciesFromContextMap = createContextMap => {
- const resolveDependenciesFromContextMap = (fs, options, callback) => {
- createContextMap(fs, (err, map) => {
- if (err) return callback(err);
- const dependencies = Object.keys(map).map(key => {
- return new ContextElementDependency(
- map[key] + options.resourceQuery,
- key
- );
- });
- callback(null, dependencies);
- });
- };
- return resolveDependenciesFromContextMap;
- };
-
- module.exports = ContextReplacementPlugin;
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