source: imaps-frontend/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("../json/JsonData")} JsonData */
/** @typedef {import("../json/JsonData").RawJsonData} RawJsonData */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("../util/Hash")} Hash */

/**
 * @param {RawJsonData} data data
 * @returns {TODO} value
 */
const getExportsFromData = data => {
        if (data && typeof data === "object") {
                if (Array.isArray(data)) {
                        return data.length < 100
                                ? data.map((item, idx) => ({
                                                name: `${idx}`,
                                                canMangle: true,
                                                exports: getExportsFromData(item)
                                        }))
                                : undefined;
                }
                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 {JsonData} data json data
         */
        constructor(data) {
                super();
                this.data = data;
        }

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

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

        /**
         * Update the hash
         * @param {Hash} hash hash to be updated
         * @param {UpdateHashContext} context context
         * @returns {void}
         */
        updateHash(hash, context) {
                this.data.updateHash(hash);
        }

        /**
         * @param {ObjectSerializerContext} context context
         */
        serialize(context) {
                const { write } = context;
                write(this.data);
                super.serialize(context);
        }

        /**
         * @param {ObjectDeserializerContext} context context
         */
        deserialize(context) {
                const { read } = context;
                this.data = read();
                super.deserialize(context);
        }
}

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

module.exports = JsonExportsDependency;