setTimeout is not working

setTimeout, setInterval and other interval built in methods do not work, even if I expose them in context.
```
console.log('start');
setTimeout(()=> {
console.log('hello timeout');
}, 2000);

console.log('end');
```
**output:**
```
start
end
```

It is to be noted that when I add `.bind(this)` , then timeout works and breaks at that line saying .bind is not a function.
```
console.log('start');
setTimeout(()=> {
console.log('hello timeout');
}, 2000).bind(this);

console.log('end');
```
**output:**
```
start
hello timeout
// and an error in console saying setTimeout(...).bind is not a function
```