source: frontend/node_modules/webpack/lib/ExportsInfoApiPlugin.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

const {
        JAVASCRIPT_MODULE_TYPE_AUTO,
        JAVASCRIPT_MODULE_TYPE_DYNAMIC,
        JAVASCRIPT_MODULE_TYPE_ESM
} = require("./ModuleTypeConstants");
const ConstDependency = require("./dependencies/ConstDependency");
const ExportsInfoDependency = require("./dependencies/ExportsInfoDependency");

/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./Dependency").DependencyLocation} DependencyLocation */
/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
/** @typedef {import("./javascript/JavascriptParser").Range} Range */

const PLUGIN_NAME = "ExportsInfoApiPlugin";

class ExportsInfoApiPlugin {
        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                compiler.hooks.compilation.tap(
                        PLUGIN_NAME,
                        (compilation, { normalModuleFactory }) => {
                                compilation.dependencyTemplates.set(
                                        ExportsInfoDependency,
                                        new ExportsInfoDependency.Template()
                                );
                                /**
                                 * Handles the hook callback for this code path.
                                 * @param {JavascriptParser} parser the parser
                                 * @returns {void}
                                 */
                                const handler = (parser) => {
                                        parser.hooks.expressionMemberChain
                                                .for("__webpack_exports_info__")
                                                .tap(PLUGIN_NAME, (expr, members) => {
                                                        const dep =
                                                                members.length >= 2
                                                                        ? new ExportsInfoDependency(
                                                                                        /** @type {Range} */ (expr.range),
                                                                                        members.slice(0, -1),
                                                                                        members[members.length - 1]
                                                                                )
                                                                        : new ExportsInfoDependency(
                                                                                        /** @type {Range} */ (expr.range),
                                                                                        null,
                                                                                        members[0]
                                                                                );
                                                        dep.loc = /** @type {DependencyLocation} */ (expr.loc);
                                                        parser.state.module.addDependency(dep);
                                                        return true;
                                                });
                                        parser.hooks.expression
                                                .for("__webpack_exports_info__")
                                                .tap(PLUGIN_NAME, (expr) => {
                                                        const dep = new ConstDependency(
                                                                "true",
                                                                /** @type {Range} */ (expr.range)
                                                        );
                                                        dep.loc = /** @type {DependencyLocation} */ (expr.loc);
                                                        parser.state.module.addPresentationalDependency(dep);
                                                        return true;
                                                });
                                };
                                normalModuleFactory.hooks.parser
                                        .for(JAVASCRIPT_MODULE_TYPE_AUTO)
                                        .tap(PLUGIN_NAME, handler);
                                normalModuleFactory.hooks.parser
                                        .for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
                                        .tap(PLUGIN_NAME, handler);
                                normalModuleFactory.hooks.parser
                                        .for(JAVASCRIPT_MODULE_TYPE_ESM)
                                        .tap(PLUGIN_NAME, handler);
                        }
                );
        }
}

module.exports = ExportsInfoApiPlugin;