wooandoo/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"/>
	<title>direct mutable / immutable action vs future like vs promise #jsbench #jsperf</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
</head>
<body>
	<h1>Open the console to view the results</h1>
	<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
</body>
</html>

## suite.js
"use strict";

(function (factory) {
	if (typeof Benchmark !== "undefined") {
		factory(Benchmark);
	} else {
		factory(require("benchmark"));
	}
})(function (Benchmark) {
	var suite = new Benchmark.Suite;

	Benchmark.prototype.setup = function () {
		const mutable_action = (data, value) => {
		    data.value = value
		}

		const immutable_action = (data, value) => {
		    return {
		        ...data,
		        value
		    }
		}

		const initial_data = {
		    value: 0
		}

		class Future {
		    static of(value) {
		        return new Future(value)
		    }

		    constructor(value) {
		        this.value = value
		    }

		    map(fn) {
		        return new Future(fn(this.value))
		    }
		}

		const initial_future = Future.of(0)

		const static_fn = old_value => 17

		const initial_promise = Promise.resolve(0)
	};


	suite.add("mutable_action(initial_data, 17)", function () {
		mutable_action(initial_data, 17)
	});

	suite.add("immutable_action(initial_data, 17)", function () {
		immutable_action(initial_data, 17)
	});

	suite.add("initial_future.map(old_value => 17)", function () {
		initial_future.map(old_value => 17)
	});

	suite.add("initial_future.map(static_fn)", function () {
		initial_future.map(static_fn)
	});

	suite.add("initial_promise.then(static_fn)", function () {
		initial_promise.then(static_fn)
	});

	suite.on("cycle", function (evt) {
		console.log(" - " + evt.target);
	});

	suite.on("complete", function (evt) {
		console.log(new Array(30).join("-"));

		var results = evt.currentTarget.sort(function (a, b) {
			return b.hz - a.hz;
		});

		results.forEach(function (item) {
			console.log((idx + 1) + ". " + item);
		});
	});

	console.log("direct mutable / immutable action vs future like vs promise #jsbench #jsperf");
	console.log(new Array(30).join("-"));
	suite.run();
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>direct mutable / immutable action vs future like vs promise #jsbench #jsperf</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
	</head>
	<body>
	<h1>Open the console to view the results</h1>
	<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
	</body>
	</html>
	"use strict";

	(function (factory) {
	if (typeof Benchmark !== "undefined") {
	factory(Benchmark);
	} else {
	factory(require("benchmark"));
	}
	})(function (Benchmark) {
	var suite = new Benchmark.Suite;

	Benchmark.prototype.setup = function () {
	const mutable_action = (data, value) => {
	data.value = value
	}

	const immutable_action = (data, value) => {
	return {
	...data,
	value
	}
	}

	const initial_data = {
	value: 0
	}

	class Future {
	static of(value) {
	return new Future(value)
	}

	constructor(value) {
	this.value = value
	}

	map(fn) {
	return new Future(fn(this.value))
	}
	}

	const initial_future = Future.of(0)

	const static_fn = old_value => 17

	const initial_promise = Promise.resolve(0)
	};


	suite.add("mutable_action(initial_data, 17)", function () {
	mutable_action(initial_data, 17)
	});

	suite.add("immutable_action(initial_data, 17)", function () {
	immutable_action(initial_data, 17)
	});

	suite.add("initial_future.map(old_value => 17)", function () {
	initial_future.map(old_value => 17)
	});

	suite.add("initial_future.map(static_fn)", function () {
	initial_future.map(static_fn)
	});

	suite.add("initial_promise.then(static_fn)", function () {
	initial_promise.then(static_fn)
	});

	suite.on("cycle", function (evt) {
	console.log(" - " + evt.target);
	});

	suite.on("complete", function (evt) {
	console.log(new Array(30).join("-"));

	var results = evt.currentTarget.sort(function (a, b) {
	return b.hz - a.hz;
	});

	results.forEach(function (item) {
	console.log((idx + 1) + ". " + item);
	});
	});

	console.log("direct mutable / immutable action vs future like vs promise #jsbench #jsperf");
	console.log(new Array(30).join("-"));
	suite.run();
	});