xxh3-ts

xxhash implementation in pure typescript (using tc39 bigint), supports XXH64 & XXH3-128.
These algorithms require Node.js >=12.x, because of Buffer::readBigUInt64LE

Usage:

``ts
import { XXH64 } from 'xxh3-ts';
import { Buffer } from 'buffer';

let hash: bigint = XXH64(Buffer.from(JSON.stringify(v)))
`
For conversion back to buffer it's recommended to use bigint-buffer package or the following snippet:
`ts
function toBufferBE(num: bigint): Buffer {
const hex = num.toString(16);
// Padding is needed otherwise the last nibble will be dropped in an edge case
return Buffer.from(hex.padStart(Math.ceil(hex.length/2) * 2, '0'), 'hex');
}
``

Compatibility

XXH64 & XXH3-128 were derived from the specifications and is input/output compatible with upstream v0.8.3