webpack/lib/serialization/NullPrototypeObjectSerializer.js

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

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

"use strict";

/** @typedef {import("./ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("./ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */

class NullPrototypeObjectSerializer {
	/**
	 * @template {object} T
	 * @param {T} obj null object
	 * @param {ObjectSerializerContext} context context
	 */
	serialize(obj, context) {
		/** @type {string[]} */
		const keys = Object.keys(obj);
		for (const key of keys) {
			context.write(key);
		}
		context.write(null);
		for (const key of keys) {
			context.write(obj[key]);
		}
	}
	/**
	 * @template {object} T
	 * @param {ObjectDeserializerContext} context context
	 * @returns {T} null object
	 */
	deserialize(context) {
		/** @type {T} */
		const obj = Object.create(null);
		/** @type {string[]} */
		const keys = [];
		/** @type {string | null} */
		let key = context.read();
		while (key !== null) {
			keys.push(key);
			key = context.read();
		}
		for (const key of keys) {
			obj[key] = context.read();
		}
		return obj;
	}
}

module.exports = NullPrototypeObjectSerializer;