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

	"use strict";

	class Serializer {
	constructor(middlewares, context) {
	this.serializeMiddlewares = middlewares.slice();
	this.deserializeMiddlewares = middlewares.slice().reverse();
	this.context = context;
	}

	serialize(obj, context) {
	const ctx = { ...context, ...this.context };
	let current = obj;
	for (const middleware of this.serializeMiddlewares) {
	if (current instanceof Promise) {
	current = current.then(
	data => data && middleware.serialize(data, context)
	);
	} else if (current) {
	try {
	current = middleware.serialize(current, ctx);
	} catch (err) {
	current = Promise.reject(err);
	}
	} else break;
	}
	return current;
	}

	deserialize(value, context) {
	const ctx = { ...context, ...this.context };
	/** @type {any} */
	let current = value;
	for (const middleware of this.deserializeMiddlewares) {
	if (current instanceof Promise) {
	current = current.then(data => middleware.deserialize(data, context));
	} else {
	current = middleware.deserialize(current, ctx);
	}
	}
	return current;
	}
	}

	module.exports = Serializer;