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- /*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
- */
- "use strict";
-
- const ParserHelpers = require("./ParserHelpers");
- const ConstDependency = require("./dependencies/ConstDependency");
-
- const NullFactory = require("./NullFactory");
-
- class ProvidePlugin {
- constructor(definitions) {
- this.definitions = definitions;
- }
-
- apply(compiler) {
- const definitions = this.definitions;
- compiler.hooks.compilation.tap(
- "ProvidePlugin",
- (compilation, { normalModuleFactory }) => {
- compilation.dependencyFactories.set(ConstDependency, new NullFactory());
- compilation.dependencyTemplates.set(
- ConstDependency,
- new ConstDependency.Template()
- );
- const handler = (parser, parserOptions) => {
- Object.keys(definitions).forEach(name => {
- var request = [].concat(definitions[name]);
- var splittedName = name.split(".");
- if (splittedName.length > 0) {
- splittedName.slice(1).forEach((_, i) => {
- const name = splittedName.slice(0, i + 1).join(".");
- parser.hooks.canRename
- .for(name)
- .tap("ProvidePlugin", ParserHelpers.approve);
- });
- }
- parser.hooks.expression.for(name).tap("ProvidePlugin", expr => {
- let nameIdentifier = name;
- const scopedName = name.includes(".");
- let expression = `require(${JSON.stringify(request[0])})`;
- if (scopedName) {
- nameIdentifier = `__webpack_provided_${name.replace(
- /\./g,
- "_dot_"
- )}`;
- }
- if (request.length > 1) {
- expression += request
- .slice(1)
- .map(r => `[${JSON.stringify(r)}]`)
- .join("");
- }
- if (
- !ParserHelpers.addParsedVariableToModule(
- parser,
- nameIdentifier,
- expression
- )
- ) {
- return false;
- }
- if (scopedName) {
- ParserHelpers.toConstantDependency(
- parser,
- nameIdentifier
- )(expr);
- }
- return true;
- });
- });
- };
- normalModuleFactory.hooks.parser
- .for("javascript/auto")
- .tap("ProvidePlugin", handler);
- normalModuleFactory.hooks.parser
- .for("javascript/dynamic")
- .tap("ProvidePlugin", handler);
-
- // Disable ProvidePlugin for javascript/esm, see https://github.com/webpack/webpack/issues/7032
- }
- );
- }
- }
- module.exports = ProvidePlugin;
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