Bad Array Shift Performance in Chromium (versus Firefox)

Run Test

function shiftTest(numberOfElements)
{
	let x = 0;
	let ary = [];

	while (x !== numberOfElements)
	{
		ary.push(x);
		x += 1;
	}

	console.time(`Shifted ${no$Int(numberOfElements)} elements in `);
	while(ary.length > 0)
	{
		ary.shift();
	}
	console.timeEnd(`Shifted ${no$Int(numberOfElements)} elements in `);
}

function runTest()
{
	console.time("All tests combined completed in ");
	let y = 0;
	while (y < 15000)
	{
		shiftTest(y);
		y += 100;
	}
	while (y < 15100)
	{
		shiftTest(y);
		y += 1;
	}
	y = 20000;
	while (y < 150001)
	{
		shiftTest(y);
		y += 5000;
	}
	console.timeEnd("All tests combined completed in ");
}

// These last two functions are just for adding commas to the element counts.
function $(dollarAmount)
{
	let locale = 'en-US';
	let options = { style: 'currency', currency: 'USD' };
	return Intl.NumberFormat(locale, options).format(dollarAmount);
}
function no$Int(dollarAmount)
{
	return $(dollarAmount).replace('$','').split('.')[0];
}

Run Test