Parse string to BigInt with radix?

[sffc]

Current APIs:

• parseInt() parses strings to Number with an arbitrary radix.
• Number.prototype.toString() prints a Number to a string with an arbitrary radix.
• BigInt.prototype.toString() prints a BigInt to a string with an arbitrary radix.

However, I cannot find a built-in function to parse a string to a BigInt with an arbitrary radix. Stack Overflow seems to agree.

Worth including in this proposal?

(Follow-up to #5)

[jakobkummerow]

See also: https://github.com/tc39/proposal-number-fromstring

[js-choi]

Yes, I think that would probably be out of scope of this particular proposal, and best left to @mathiasbynens’s proposal (I want that proposal a lot!), but thank you for raising it.