@inventivetalent/optimus-ts/dist/optimus.js

Knuths multiplicative hashing based id obfuscation for javascript (port of https://github.com/jenssegers/optimus).

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Long = require("long");
const MAX_INT32 = 2147483647;
const MULTIPLIER = 4294967296; // 2^32;
class Optimus {
    constructor(prime, inverse, random) {
        this.prime = Long.fromInt(prime);
        this.inverse = Long.fromInt(inverse);
        this.random = Long.fromInt(random);
    }
    encode(num) {
        const n = Long.fromInt(num);
        return n.mul(this.prime).and(Long.fromInt(MAX_INT32)).xor(this.random).toSigned().toInt();
    }
    decode(num) {
        const n = Long.fromInt(num);
        return n.xor(this.random).mul(this.inverse).and(Long.fromInt(MAX_INT32)).toSigned().toInt();
    }
}
exports.Optimus = Optimus;