87 lines
2.4 KiB
JavaScript
87 lines
2.4 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 { approve } = require("./JavascriptParserHelpers");
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const NullFactory = require("./NullFactory");
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const ConstDependency = require("./dependencies/ConstDependency");
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const ProvidedDependency = require("./dependencies/ProvidedDependency");
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/** @typedef {import("./Compiler")} Compiler */
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class ProvidePlugin {
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/**
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* @param {Record<string, string | string[]>} definitions the provided identifiers
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*/
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constructor(definitions) {
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this.definitions = definitions;
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}
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/**
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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 definitions = this.definitions;
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compiler.hooks.compilation.tap(
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"ProvidePlugin",
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(compilation, { normalModuleFactory }) => {
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compilation.dependencyFactories.set(ConstDependency, new NullFactory());
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compilation.dependencyTemplates.set(
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ConstDependency,
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new ConstDependency.Template()
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);
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compilation.dependencyFactories.set(
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ProvidedDependency,
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normalModuleFactory
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);
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compilation.dependencyTemplates.set(
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ProvidedDependency,
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new ProvidedDependency.Template()
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);
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const handler = (parser, parserOptions) => {
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Object.keys(definitions).forEach(name => {
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const request = [].concat(definitions[name]);
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const splittedName = name.split(".");
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if (splittedName.length > 0) {
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splittedName.slice(1).forEach((_, i) => {
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const name = splittedName.slice(0, i + 1).join(".");
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parser.hooks.canRename.for(name).tap("ProvidePlugin", approve);
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});
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}
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parser.hooks.expression.for(name).tap("ProvidePlugin", expr => {
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const nameIdentifier = name.includes(".")
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? `__webpack_provided_${name.replace(/\./g, "_dot_")}`
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: name;
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const dep = new ProvidedDependency(
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request[0],
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nameIdentifier,
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request.slice(1),
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expr.range
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);
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dep.loc = expr.loc;
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parser.state.module.addDependency(dep);
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return true;
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});
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});
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};
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normalModuleFactory.hooks.parser
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.for("javascript/auto")
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.tap("ProvidePlugin", handler);
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normalModuleFactory.hooks.parser
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.for("javascript/dynamic")
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.tap("ProvidePlugin", handler);
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normalModuleFactory.hooks.parser
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.for("javascript/esm")
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.tap("ProvidePlugin", handler);
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}
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);
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}
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}
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module.exports = ProvidePlugin;
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