@ton3/liteclient/src/tl/stream/utils.ts

TON Blockchain LiteClient

const uintToBytes = (value: number, length: number): Uint8Array => {
    const buffer = new Uint8Array(length).fill(0)

    buffer[length - 1] = value & 0xFF

    for (let i = length - 2, mul = 256; i >= 0; --i, mul *= 0x100) {
        buffer[i] = (value / mul) & 0xFF
    }

    return buffer
}

const bytesToUint = (value: Uint8Array): number => {
    let result = value[value.byteLength - 1]

    for (let i = value.byteLength - 2, mul = 256; i >= 0; --i, mul *= 0x100) {
        result += value[i] * mul
    }

    return result
}

export {
    uintToBytes,
    bytesToUint
}