Force an object to evaluate to false

Question

I\'m guessing this is probably application specific however I am using node.js - as long as it works in the v8 engine, I don\'t mind.

I\'m trying to create an

Answer 1

The closest you can get is like

if (+obj)

Where a falsy object defines a .valueOf() function that returns 0 or false:

var o = {
    valueOf: function() {
        return false;
    }
};
if (+o) {
    throw unreachable();
}