subzey/index.html

## index.html
<!doctype html>
<script>
	let singletonPromise;
	function makeSomeRequest() {
		if (!singletonPromise) {
			singletonPromise = Promise.resolve('(Response from some request that only should be made once)')
		}
		return singletonPromise;
	}

	class LeakyClass {
		constructor() {
			// Makes the memory leak more apparent
			this._heavyObject = new Array(8 * 1024 * 1024).fill(0);
		}
		async doAsyncStuff() {
			console.log(await makeSomeRequest());
		}
	}

	new LeakyClass().doAsyncStuff();
</script>


<p>Try refreshing this page with Chrome DevTools open. The <code>LeakyClass</code> instance would not be garbage collected. The heap size would be around 32 MB.</p>
	<!doctype html>
	<script>
	let singletonPromise;
	function makeSomeRequest() {
	if (!singletonPromise) {
	singletonPromise = Promise.resolve('(Response from some request that only should be made once)')
	}
	return singletonPromise;
	}

	class LeakyClass {
	constructor() {
	// Makes the memory leak more apparent
	this._heavyObject = new Array(8 * 1024 * 1024).fill(0);
	}
	async doAsyncStuff() {
	console.log(await makeSomeRequest());
	}
	}

	new LeakyClass().doAsyncStuff();
	</script>


	<p>Try refreshing this page with Chrome DevTools open. The <code>LeakyClass</code> instance would not be garbage collected. The heap size would be around 32 MB.</p>