webpack/lib/serialization/SingleItemMiddleware.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";

const SerializerMiddleware = require("./SerializerMiddleware");

/** @typedef {EXPECTED_ANY} DeserializedType */
/** @typedef {EXPECTED_ANY[]} SerializedType */
/** @typedef {{}} Context */

/**
 * @extends {SerializerMiddleware<DeserializedType, SerializedType, Context>}
 */
class SingleItemMiddleware extends SerializerMiddleware {
	/**
	 * @param {DeserializedType} data data
	 * @param {Context} context context object
	 * @returns {SerializedType | Promise<SerializedType> | null} serialized data
	 */
	serialize(data, context) {
		return [data];
	}

	/**
	 * @param {SerializedType} data data
	 * @param {Context} context context object
	 * @returns {DeserializedType | Promise<DeserializedType>} deserialized data
	 */
	deserialize(data, context) {
		return data[0];
	}
}

module.exports = SingleItemMiddleware;