source: frontend/node_modules/webpack/lib/dependencies/HarmonyTopLevelThisParserPlugin.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Florent Cailhol @ooflorent
*/

"use strict";

const ConstDependency = require("./ConstDependency");
const HarmonyExports = require("./HarmonyExports");

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

const PLUGIN_NAME = "HarmonyTopLevelThisParserPlugin";

class HarmonyTopLevelThisParserPlugin {
        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {JavascriptParser} parser the parser
         * @returns {void}
         */
        apply(parser) {
                parser.hooks.expression.for("this").tap(PLUGIN_NAME, (node) => {
                        if (!parser.scope.topLevelScope) return;
                        if (HarmonyExports.isEnabled(parser.state)) {
                                const dep = new ConstDependency(
                                        "undefined",
                                        /** @type {Range} */ (node.range),
                                        null
                                );
                                dep.loc = /** @type {DependencyLocation} */ (node.loc);
                                parser.state.module.addPresentationalDependency(dep);
                                return true;
                        }
                });
        }
}

module.exports = HarmonyTopLevelThisParserPlugin;