FR: Avoid using bigint literal syntax to target older browsers

[mman]

One of my projects targets very old specialised browsers, and when readable-stream dependency is brought in the webpack produced code fails to run because of SyntaxError here:

readable-stream/src/errors.js

Lines 339 to 340 in a2e9aed

	if (input > 2n ** 32n || input < -(2n ** 32n)) {
	received = addNumericalSeparator(received)

Turns out that specialised browser based on WebKit can not parse bigint literals.

I'm not sure if I am missing something but I was not able to find a solution to transpile the bigint literals correctly to target older browsers.

But turns out that the fix could be to avoid bigint literal and use BigInt constructor.

[mman]

Attempt to address this cleanly here: #542