Js2coffee: convert JavaScript to CoffeeScript

benth · on Oct 10, 2012

Neat.

Some code does not round-trip. This JS terminates but if I convert the resulting CS back to JS, I get an infinite loop.

    function test() {
        var i;
        var countdown = function(n) {
            var i;
            for (var i = n; i > 0; i--) {
                console.log(i);
            }
        }
        for (var i = 0; i < 10; i++) {
            countdown(i);
        }
    } 
    test();

nkerkin · on Oct 10, 2012

This is a great resource that's been around for a little while. Excellent for starting out with CS or migrating existing projects.

joebeetee · on Oct 10, 2012

As a new coffeescripter, this is really interesting to be able to check syntax out - nice find

jeeyoungk · on Oct 10, 2012

I use this all the time, except I don't like some of the syntaxes that it generates. I tend to avoid

    EXPR if COND
    EXPR unless COND

type of code, because the order of execution isn't very clear.