message: Add WebWorker support for BigInt constructor
diff: @@ -66,6 +66,10 @@ function getBigIntConstructor(): BigIntConstructor {
  return global['BigInt'] || null;
  }
  + if (typeof self !== 'undefined') {
  + return self['BigInt'] || null;
  + }
  +
  throw new Error('Can\'t search globals for BigInt!');
  }
  