@mysten/bcs/dist/esm/uleb.js

BCS - Canonical Binary Serialization implementation for JavaScript

function ulebEncode(num) {
  let bigNum = BigInt(num);
  const arr = [];
  let len = 0;
  if (bigNum === 0n) {
    return [0];
  }
  while (bigNum > 0) {
    arr[len] = Number(bigNum & 0x7fn);
    bigNum >>= 7n;
    if (bigNum > 0n) {
      arr[len] |= 128;
    }
    len += 1;
  }
  return arr;
}
function ulebDecode(arr) {
  let total = 0n;
  let shift = 0n;
  let len = 0;
  while (true) {
    if (len >= arr.length) {
      throw new Error("ULEB decode error: buffer overflow");
    }
    const byte = arr[len];
    len += 1;
    total += BigInt(byte & 127) << shift;
    if ((byte & 128) === 0) {
      break;
    }
    shift += 7n;
  }
  if (total > BigInt(Number.MAX_SAFE_INTEGER)) {
    throw new Error("ULEB decode error: value exceeds MAX_SAFE_INTEGER");
  }
  return {
    value: Number(total),
    length: len
  };
}
export {
  ulebDecode,
  ulebEncode
};
//# sourceMappingURL=uleb.js.map