Print Memory

mem.js

function format_numbers(n) {
	return (n / 1024 / 1024).toFixed(3) + 'MB';
}

function mem() {
	if (performance && performance.memory) {
		console.log('used heap', format_numbers(performance.memory.usedJSHeapSize))
		console.log('total heap', format_numbers(performance.memory.totalJSHeapSize))
		console.log('heap limit', format_numbers(performance.memory.jsHeapSizeLimit))
	}
}

mem();