JsBigInt support?

[coolaj86]

Total newbie to neon, just kicking the tires.

I'm just curious if there's a way to return a JS BigInt. I just guessed at JsResult<JsBigInt>, but that was wrong.

I believe there are three distinct BigInt types:

• Signed BigInts (BigInt)
• Signed BigInt64 (BigInt64Array.from([-123n]))
• Unsigned BigInt64 (BigInt64Array.from([123n]))

The later two are i64 and u64 and the first is true arbitrary precision.

[amilajack]

There isn't a way to do this just yet. For the time being you can return a string like we are doing in the fibonacci example. There is a way to do this in neon. You can construct those objects in neon. I can't provide any examples just yet because I haven't done this myself yet. I will look into this soon

[coolaj86]

Thanks. I figured I could just return a string and then handle it in JS if needed.

I was just curious because I've been doing stuff with BigInts lately, but having it in neon isn't a need I have yet, though I imagine if I get into neon seriously I'll end up use them one way or another.

[amilajack]

What you can do is access the object from the global property with cx.global and then get the BigInt property.

https://neon-bindings.com/api/neon/context/trait.context#method.global

[kjvalencik]

This could also be done with a buffer. I agree that this would be a great addition to neon.

https://nodejs.org/api/buffer.html#buffer_buf_writebigint64be_value_offset