When doing functional programming, immutable lists with value comparison are what you want. However with JS, you only get mutable arrays with reference equality out-of-the-box. You can use a library, as others have point out, but then your code gets very noisy.

JS has a very "unique" opinion that that is how that should be interpreted. Given the same input as above:

Python says True.

Ruby says true.

JS says false.

And otherwise, JS is quite lenient with not interpreting the input like you describe it when using "==":

> [] == 0

< true

> [] == false

< true