@mark01/express-utils/lib/core/util/number-to-buf.js

npm package that contains utilities for express.js

const numberToBuf = (num) => {
    const buf = new ArrayBuffer(8);
    const arr = new Uint8Array(buf);
    let acc = num;
    for (let i = 7; i >= 0; i--) {
        if (acc === 0)
            break;
        arr[i] = acc & 255;
        acc -= arr[i];
        acc /= 256;
    }
    return buf;
};
export default numberToBuf;