What even is a JSON Number?

Not a question people generally ponder, and seems fairly straightforward. It’s a number, obviously! But the question turns out to be somewhat hard to answer, and for API designers especially, the answer is really important to know! So lets explore by diving into the various JSON specifications and implementations. The findings are summarized at the end, so feel free to skip to the bottom if you just want to know the answer and not wade through the exploration.

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