Any standard mechanism for detecting if a JavaScript is executing as a WebWorker?

Question

A WebWorker executes with a scope completely separate from the \'window\' context of traditional JavaScript. Is there a standard way for a script to determine if it is, its

Answer 1

This worked for me

  if (self.document) {
    console.log('We are calculating Primes in Main Thread');
  } else {
    console.log('We are calculating Primes in Worker Thread');
  }