generator function es5 polyfill unexpected behavior in ForInStatement and deleteStatement #49808
Description
Bug Report
🔎 Search Terms
generator function polyfill
🕗 Version & Regression Information
- This is the behavior in every version I tried.
⏯ Playground Link
Playground link with relevant code
💻 Code
function* gen() {
var count = 0;
var obj = { foo: 1, bar: 2 };
for (var key in obj) {
console.log(obj.hasOwnProperty(key))
yield [key, obj[key]];
delete obj.bar;
count += 1;
}
return count;
}
let itr = gen();
itr.next();
itr.next();🙁 Actual behavior
true
false🙂 Expected behavior
true