source: frontend/node_modules/webpack/lib/serialization/Serializer.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

/**
 * Defines the serializer middleware type used by this module.
 * @template T, K, C
 * @typedef {import("./SerializerMiddleware")<T, K, C>} SerializerMiddleware
 */

/**
 * Represents Serializer.
 * @template DeserializedValue
 * @template SerializedValue
 * @template Context
 */
class Serializer {
        /**
         * Creates an instance of Serializer.
         * @param {SerializerMiddleware<EXPECTED_ANY, EXPECTED_ANY, EXPECTED_ANY>[]} middlewares serializer middlewares
         * @param {Context=} context context
         */
        constructor(middlewares, context) {
                this.serializeMiddlewares = [...middlewares];
                this.deserializeMiddlewares = [...middlewares].reverse();
                this.context = context;
        }

        /**
         * Serializes this instance into the provided serializer context.
         * @template ExtendedContext
         * @param {DeserializedValue | Promise<DeserializedValue>} obj object
         * @param {Context & ExtendedContext} context context object
         * @returns {Promise<SerializedValue>} result
         */
        serialize(obj, context) {
                const ctx = { ...context, ...this.context };
                let current = obj;
                for (const middleware of this.serializeMiddlewares) {
                        if (
                                current &&
                                typeof (/** @type {Promise<DeserializedValue>} */ (current).then) ===
                                        "function"
                        ) {
                                current =
                                        /** @type {Promise<DeserializedValue>} */
                                        (current).then((data) => data && middleware.serialize(data, ctx));
                        } else if (current) {
                                try {
                                        current = middleware.serialize(current, ctx);
                                } catch (err) {
                                        current = Promise.reject(err);
                                }
                        } else {
                                break;
                        }
                }
                return /** @type {Promise<SerializedValue>} */ (current);
        }

        /**
         * Restores this instance from the provided deserializer context.
         * @template ExtendedContext
         * @param {SerializedValue | Promise<SerializedValue>} value value
         * @param {Context & ExtendedContext} context object
         * @returns {Promise<DeserializedValue>} result
         */
        deserialize(value, context) {
                const ctx = { ...context, ...this.context };
                let current = value;
                for (const middleware of this.deserializeMiddlewares) {
                        current =
                                current &&
                                typeof (/** @type {Promise<SerializedValue>} */ (current).then) ===
                                        "function"
                                        ? /** @type {Promise<SerializedValue>} */ (current).then((data) =>
                                                        middleware.deserialize(data, ctx)
                                                )
                                        : middleware.deserialize(current, ctx);
                }
                return /** @type {Promise<DeserializedValue>} */ (current);
        }
}

module.exports = Serializer;