"yield* undefined" should throw, but doesn't

[AmitAber]

according to the spec, and as implemented in other engines (traceur, v8...), yield* undefined should throw a TypeError exception. Instead, the line is ignored / exception is caught and hidden inside.

To reproduce:

function* gen() {
  yield* undefined;
}

let y = gen();
while(true) {
  let r = y.next();
  for(let key in r)
    console.log(`  ${key}: ${r[key]}`);
  if(r.done)
    break;
}

[sebmck]

Please report this on the regenerator repo.

[AmitAber]

I reported the bug as you suggested. (regenerator issue link)

[eventualbuddha]

@AmitAber at least cross-link them by posting a link to the issue you filed here. Thanks!

[sebmck]

Closing in favor of facebook/regenerator#202.