Last line is really interesting...
`Function.prototype.apply.call`
Was not aware it works that way. Actually:

`Function.prototype.call === Function.prototype.bind.call.apply.bind.call`

So it seem that `Function.prototype` functions (`Function.prototype.bind`, `Function.prototype.call`, etc.) do have object linkage to `Function.prototype`object. We can even access such linkage. See here:
`Function.prototype.apply.__proto__ === Function.prototype`

That's why we can chain it deeply. Really interesting. Also was not aware of such Reflect feature. Thanks for sharing.