How to use the rsocket-core.UTF8Encoder.decode function in rsocket-core

export function getMethod(buffer: Buffer): string {
  let offset = VERSION_SIZE;

  const serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE + serviceLength;

  const methodLength = buffer.readUInt16BE(offset);
  offset += METHOD_LENGTH_SIZE;

  return UTF8Encoder.decode(buffer, offset, offset + methodLength);
}

export function bufferToMap(buffer: Buffer): Object {
  const result = {};

  let offset = 0;
  while (offset < buffer.length) {
    let keyLen = buffer.readUInt16BE(offset);
    offset += 2;

    let key = UTF8Encoder.decode(buffer, offset, offset + keyLen);
    offset += keyLen;

    let valLen = buffer.readUInt16BE(offset);
    offset += 2;

    let value = UTF8Encoder.decode(buffer, offset, offset + valLen);
    offset += valLen;

    result[key] = value;
  }

  return result;
}

export function getService(buffer: Buffer): string {
  let offset = VERSION_SIZE;

  const serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE;

  return UTF8Encoder.decode(buffer, offset, offset + serviceLength);
}

export function bufferToMap(buffer: Buffer): Object {
  const result = {};

  let offset = 0;
  while (offset < buffer.length) {
    let keyLen = buffer.readUInt16BE(offset);
    offset += 2;

    let key = UTF8Encoder.decode(buffer, offset, offset + keyLen);
    offset += keyLen;

    let valLen = buffer.readUInt16BE(offset);
    offset += 2;

    let value = UTF8Encoder.decode(buffer, offset, offset + valLen);
    offset += valLen;

    result[key] = value;
  }

  return result;
}