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Comment by 6t6t6 | Hacker News Reader

Thank you very much for the explanation!

I was confused because I didn't realize that, actually, a class in ES6 is just a variable. Also, I am not used to the decorator pattern. Now it makes sense.

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It's even worse - classes in ES6 are just functions (their constructors); 'obj = new Class()' is just sugar for 'obj = {}; Class.bind(obj)()'. So if you leave off the "new", you'll end up clobbering whatever 'this' defaults to, which is usually the global window object.

Actually, if you leave off the "new" you get a TypeError:

    TypeError: Class constructors cannot be invoked without 'new'

Depends on your browser and/or transpiler :-)

That's definitely much nicer than the old way.

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