source: trip-planner-front/node_modules/webpack/lib/dependencies/JsonExportsDependency.js

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

"use strict";

const makeSerializable = require("../util/makeSerializable");
const NullDependency = require("./NullDependency");

/** @typedef {import("../ChunkGraph")} ChunkGraph */
/** @typedef {import("../Dependency").ExportSpec} ExportSpec */
/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../util/Hash")} Hash */

const getExportsFromData = data => {
        if (data && typeof data === "object") {
                if (Array.isArray(data)) {
                        return data.map((item, idx) => {
                                return {
                                        name: `${idx}`,
                                        canMangle: true,
                                        exports: getExportsFromData(item)
                                };
                        });
                } else {
                        const exports = [];
                        for (const key of Object.keys(data)) {
                                exports.push({
                                        name: key,
                                        canMangle: true,
                                        exports: getExportsFromData(data[key])
                                });
                        }
                        return exports;
                }
        }
        return undefined;
};

class JsonExportsDependency extends NullDependency {
        /**
         * @param {(string | ExportSpec)[]} exports json exports
         */
        constructor(exports) {
                super();
                this.exports = exports;
        }

        get type() {
                return "json exports";
        }

        /**
         * Returns the exported names
         * @param {ModuleGraph} moduleGraph module graph
         * @returns {ExportsSpec | undefined} export names
         */
        getExports(moduleGraph) {
                return {
                        exports: this.exports,
                        dependencies: undefined
                };
        }

        /**
         * Update the hash
         * @param {Hash} hash hash to be updated
         * @param {UpdateHashContext} context context
         * @returns {void}
         */
        updateHash(hash, context) {
                hash.update(this.exports ? JSON.stringify(this.exports) : "undefined");
        }

        serialize(context) {
                const { write } = context;
                write(this.exports);
                super.serialize(context);
        }

        deserialize(context) {
                const { read } = context;
                this.exports = read();
                super.deserialize(context);
        }
}

makeSerializable(
        JsonExportsDependency,
        "webpack/lib/dependencies/JsonExportsDependency"
);

module.exports = JsonExportsDependency;
module.exports.getExportsFromData = getExportsFromData;