[whizzter]

Sadly the reviver parameter is a new invention only recently available in FF and Node, not at all in Safari.

Naturally not that hard to write a custom JSON parser but the need itself is a bad thing.

[hajile]

Just use the polyfill

https://github.com/zloirock/core-js#jsonparse-source-text-ac...

[arnorhs]

No it's been there for ages. Finalized as part of ecmascript 5

What you are probably thinking of is the context parameter of the reviver callback. That is relatively recent and mostly a qol improvement

[whizzter]

Sorry yes, i was thinking of the context object with source parameter.

The issue it solves is a big one though, since without it the JSON.parse functionality cannot parse numbers that are larger than 64bit float numbers (f.ex. bigints).