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node_modules/webpack/lib/WebpackIsIncludedPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Ivan Kopeykin @vankop
+*/
+
+"use strict";
+
+const IgnoreErrorModuleFactory = require("./IgnoreErrorModuleFactory");
+const WebpackIsIncludedDependency = require("./dependencies/WebpackIsIncludedDependency");
+const {
+	toConstantDependency
+} = require("./javascript/JavascriptParserHelpers");
+
+/** @typedef {import("enhanced-resolve/lib/Resolver")} Resolver */
+/** @typedef {import("./Compiler")} Compiler */
+/** @typedef {import("./Module")} Module */
+/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
+
+class WebpackIsIncludedPlugin {
+	/**
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.compilation.tap(
+			"WebpackIsIncludedPlugin",
+			(compilation, { normalModuleFactory }) => {
+				compilation.dependencyFactories.set(
+					WebpackIsIncludedDependency,
+					new IgnoreErrorModuleFactory(normalModuleFactory)
+				);
+				compilation.dependencyTemplates.set(
+					WebpackIsIncludedDependency,
+					new WebpackIsIncludedDependency.Template()
+				);
+
+				/**
+				 * @param {JavascriptParser} parser the parser
+				 * @returns {void}
+				 */
+				const handler = parser => {
+					parser.hooks.call
+						.for("__webpack_is_included__")
+						.tap("WebpackIsIncludedPlugin", expr => {
+							if (
+								expr.type !== "CallExpression" ||
+								expr.arguments.length !== 1 ||
+								expr.arguments[0].type === "SpreadElement"
+							)
+								return;
+
+							const request = parser.evaluateExpression(expr.arguments[0]);
+
+							if (!request.isString()) return;
+
+							const dep = new WebpackIsIncludedDependency(
+								request.string,
+								expr.range
+							);
+							dep.loc = expr.loc;
+							parser.state.module.addDependency(dep);
+							return true;
+						});
+					parser.hooks.typeof
+						.for("__webpack_is_included__")
+						.tap(
+							"WebpackIsIncludedPlugin",
+							toConstantDependency(parser, JSON.stringify("function"))
+						);
+				};
+				normalModuleFactory.hooks.parser
+					.for("javascript/auto")
+					.tap("WebpackIsIncludedPlugin", handler);
+				normalModuleFactory.hooks.parser
+					.for("javascript/dynamic")
+					.tap("WebpackIsIncludedPlugin", handler);
+				normalModuleFactory.hooks.parser
+					.for("javascript/esm")
+					.tap("WebpackIsIncludedPlugin", handler);
+			}
+		);
+	}
+}
+
+module.exports = WebpackIsIncludedPlugin;