lib/client-options.js
function validateEncodingOptions(encodingOptions) {
  if (encodingOptions.map) {
    const mapConstructor = encodingOptions.map;
    if (typeof mapConstructor !== 'function' ||
      typeof mapConstructor.prototype.forEach !== 'function' ||
      typeof mapConstructor.prototype.set !== 'function') {
      throw new TypeError('Map constructor not valid');
    }
  }

  if (encodingOptions.set) {
    const setConstructor = encodingOptions.set;
    if (typeof setConstructor !== 'function' ||
      typeof setConstructor.prototype.forEach !== 'function' ||
      typeof setConstructor.prototype.add !== 'function') {
      throw new TypeError('Set constructor not valid');
    }
  }

  if ((encodingOptions.useBigIntAsLong || encodingOptions.useBigIntAsVarint) && typeof BigInt === 'undefined') {
    throw new TypeError('BigInt is not supported by the JavaScript engine');
  }
}
function validateEncodingOptions(encodingOptions) {
  if (encodingOptions.map) {
    const mapConstructor = encodingOptions.map;
    if (typeof mapConstructor !== 'function' ||
      typeof mapConstructor.prototype.forEach !== 'function' ||
      typeof mapConstructor.prototype.set !== 'function') {
      throw new TypeError('Map constructor not valid');
    }
  }

  if (encodingOptions.set) {
    const setConstructor = encodingOptions.set;
    if (typeof setConstructor !== 'function' ||
      typeof setConstructor.prototype.forEach !== 'function' ||
      typeof setConstructor.prototype.add !== 'function') {
      throw new TypeError('Set constructor not valid');
    }
  }

  if ((encodingOptions.useBigIntAsLong || encodingOptions.useBigIntAsVarint) && typeof BigInt === 'undefined') {
    throw new TypeError('BigInt is not supported by the JavaScript engine');
  }
}
Validates the encoding options.
@param {ClientOptions.encoding} encodingOptions
@private