source: trip-planner-front/node_modules/webpack/lib/serialization/SerializerMiddleware.js@ 6a3a178

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

"use strict";

const memoize = require("../util/memoize");

const LAZY_TARGET = Symbol("lazy serialization target");
const LAZY_SERIALIZED_VALUE = Symbol("lazy serialization data");

/**
 * @template DeserializedType
 * @template SerializedType
 */
class SerializerMiddleware {
        /* istanbul ignore next */
        /**
         * @abstract
         * @param {DeserializedType} data data
         * @param {Object} context context object
         * @returns {SerializedType|Promise<SerializedType>} serialized data
         */
        serialize(data, context) {
                const AbstractMethodError = require("../AbstractMethodError");
                throw new AbstractMethodError();
        }

        /* istanbul ignore next */
        /**
         * @abstract
         * @param {SerializedType} data data
         * @param {Object} context context object
         * @returns {DeserializedType|Promise<DeserializedType>} deserialized data
         */
        deserialize(data, context) {
                const AbstractMethodError = require("../AbstractMethodError");
                throw new AbstractMethodError();
        }

        /**
         * @param {any | function(): Promise<any> | any} value contained value or function to value
         * @param {SerializerMiddleware<any, any>} target target middleware
         * @param {object=} options lazy options
         * @param {any=} serializedValue serialized value
         * @returns {function(): Promise<any> | any} lazy function
         */
        static createLazy(value, target, options = {}, serializedValue) {
                if (SerializerMiddleware.isLazy(value, target)) return value;
                const fn = typeof value === "function" ? value : () => value;
                fn[LAZY_TARGET] = target;
                /** @type {any} */ (fn).options = options;
                fn[LAZY_SERIALIZED_VALUE] = serializedValue;
                return fn;
        }

        /**
         * @param {function(): Promise<any> | any} fn lazy function
         * @param {SerializerMiddleware<any, any>=} target target middleware
         * @returns {boolean} true, when fn is a lazy function (optionally of that target)
         */
        static isLazy(fn, target) {
                if (typeof fn !== "function") return false;
                const t = fn[LAZY_TARGET];
                return target ? t === target : !!t;
        }

        /**
         * @param {function(): Promise<any> | any} fn lazy function
         * @returns {object} options
         */
        static getLazyOptions(fn) {
                if (typeof fn !== "function") return undefined;
                return /** @type {any} */ (fn).options;
        }

        /**
         * @param {function(): Promise<any> | any} fn lazy function
         * @returns {any} serialized value
         */
        static getLazySerializedValue(fn) {
                if (typeof fn !== "function") return undefined;
                return fn[LAZY_SERIALIZED_VALUE];
        }

        /**
         * @param {function(): Promise<any> | any} fn lazy function
         * @param {any} value serialized value
         * @returns {void}
         */
        static setLazySerializedValue(fn, value) {
                fn[LAZY_SERIALIZED_VALUE] = value;
        }

        /**
         * @param {function(): Promise<any> | any} lazy lazy function
         * @param {function(any): Promise<any> | any} serialize serialize function
         * @returns {function(): Promise<any> | any} new lazy
         */
        static serializeLazy(lazy, serialize) {
                const fn = memoize(() => {
                        const r = lazy();
                        if (r && typeof r.then === "function") {
                                return r.then(data => data && serialize(data));
                        }
                        return serialize(r);
                });
                fn[LAZY_TARGET] = lazy[LAZY_TARGET];
                /** @type {any} */ (fn).options = /** @type {any} */ (lazy).options;
                lazy[LAZY_SERIALIZED_VALUE] = fn;
                return fn;
        }

        /**
         * @param {function(): Promise<any> | any} lazy lazy function
         * @param {function(any): Promise<any> | any} deserialize deserialize function
         * @returns {function(): Promise<any> | any} new lazy
         */
        static deserializeLazy(lazy, deserialize) {
                const fn = memoize(() => {
                        const r = lazy();
                        if (r && typeof r.then === "function") {
                                return r.then(data => deserialize(data));
                        }
                        return deserialize(r);
                });
                fn[LAZY_TARGET] = lazy[LAZY_TARGET];
                /** @type {any} */ (fn).options = /** @type {any} */ (lazy).options;
                fn[LAZY_SERIALIZED_VALUE] = lazy;
                return fn;
        }

        /**
         * @param {function(): Promise<any> | any} lazy lazy function
         * @returns {function(): Promise<any> | any} new lazy
         */
        static unMemoizeLazy(lazy) {
                if (!SerializerMiddleware.isLazy(lazy)) return lazy;
                const fn = () => {
                        throw new Error(
                                "A lazy value that has been unmemorized can't be called again"
                        );
                };
                fn[LAZY_SERIALIZED_VALUE] = SerializerMiddleware.unMemoizeLazy(
                        lazy[LAZY_SERIALIZED_VALUE]
                );
                fn[LAZY_TARGET] = lazy[LAZY_TARGET];
                fn.options = /** @type {any} */ (lazy).options;
                return fn;
        }
}

module.exports = SerializerMiddleware;