Say what you want about PHP, but here we are decades later. I'm still using it, it still works, and it's still getting updated and improved.
I use it constantly not because it's well-designed but because TINA (there is no alternative).
[] == ![]; // true. Go ahead. Run it in your console...
Because an array is an object which has a 'truthy' value '![]' evaluates as 'false'.
Simplifies to a statement similar to 'false == false'.
A little useless arcana for those interested.
Well, not so useless if your expecting '!someEmptyArray' to evaluate to 'true'. Use '!someEmptyArray.length' instead.