nits on BigInt Proposal

[kai zhu]

looking at the use-cases for this feature @ https://github.com/tc39/proposal-bigint#use-cases <https://github.com/tc39/proposal-bigint#use-cases>, i'm not convinced it improves everyday programming, or outweigh the benefit and simplicity having a single number type.

my nits are:

- will this break or complicate existing/future code that does typeof checks for numbers? what are the costs of retooling nodejs mongodb / mysql / etc drivers and the apps that use them?

- how will JSON.parse and JSON.stringify deal with BigInt? the mentioned use-cases for wire-protocols, guids, timestamps, and fixed-point BigDecimal aren’t very useful if it can’t easily be serialized / deserialized across db / persistent storage

- are there actual common algorithmic use-cases in frontend programming or nodejs apps that need arithmetic on integers greater than 52-bits? should that rather be the domain of webassembly?


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