Constructor cannot be called as a function

[jruchaud]

I wrote this code to extends KeyboardEvent from native API:

class KeyEvent extends KeyboardEvent {
}

I use babel to transpile the code to ES5. But after, during executing the code, I get this error:

Uncaught TypeError: Failed to construct 'KeyboardEvent': Please use the 'new' operator, this DOM object constructor cannot be called as a function.

[sebmck]

Show the code you're using to create a KeyEvent please.

[jruchaud]

It is just : new KeyEvent();

[sebmck]

It'd be because the super class is being called with apply then. I don't think there's a way around this unless you just use native classes.

[jruchaud]

What's pity.