Encoding large integers as uint64 in MessagePack

[jackkru69]

Hey everyone,

I'm currently working with MessagePack, and I need to encode large integers as uint64. However, I don't expect to deal with floats in my use case—I'm specifically working with integers only.

For instance, I tried packing the number 1000000000000000000 as a sum, and from what I understand, the result should be something like CF0DE0B6B3A7640000.

Could someone confirm whether the CF type in MessagePack corresponds to uint64, or if there's something I'm missing here?

Thanks in advance!

[kriszyp]

Have you tried 1000000000000000000n? This is the JavaScript literal for a 64-bit (or more) integer. (1000000000000000000 is a float in JS.)

[jackkru69]

ok, I'll try, but can I encode, for example, 1723804081783 not as a float?

[kriszyp]

You can encode any number as a 64-bit integer, by using BigInt, as long as it fits in 64 bits.