harmonyc/util/xmur3.js

Harmony Code - model-driven BDD for Vitest

// https://stackoverflow.com/revisions/47593316/25 by bryc (github.com/bryc)
export function xmur3(str) {
    let h = 1779033703 ^ str.length;
    for (let i = 0; i < str.length; i++)
        (h = Math.imul(h ^ str.charCodeAt(i), 3432918353)),
            (h = (h << 13) | (h >>> 19));
    return function () {
        h = Math.imul(h ^ (h >>> 16), 2246822507);
        h = Math.imul(h ^ (h >>> 13), 3266489909);
        return (h ^= h >>> 16) >>> 0;
    };
}