Automatic line number logging in JavaScript

log.js

function log() {
    var stack;
    try {
        throw new Error();
    } catch (e) {
        stack = e.stack.split('\n')[2].match(/\s+at\s+(.+)/)[1] + ':\n\t';
    }
    var args = Array.prototype.slice.call(arguments);
    args.unshift(stack);
    console.log.apply(console, args);
};