Benchmark

benchmark-decorator.js

function benchmark(args) {
    var error_msg = [
        "Provide an object with at least a func keyword, example:",
        "{func: function, thisarg: thisarg, times:times}",
        "func must be an instanceof Function"
   ].join('\n');

    return function() {
        if (!(args.func instanceof Function)) {
            throw new Error(error_msg)
        }

        var func = args.func
        var thisarg = args.thisarg
        var times = args.times || 1
        var total_time = 0
        var to_return

        for (var i = 0; i < times; i++) {
            var start_time = new Date().getTime()
            to_return = func.apply(thisarg, arguments)
            total_time += new Date().getTime() - start_time
        }

        console.info('Function', func.name, 'total', total_time, 'ms')
        console.info('Function', func.name, 'avg', total_time / times, 'ms')

        return to_return
    }
}

//Usage

benchmark({
    func: func,
    times: 1000,
    thisarg: {
        hello: 'world'
    }
})()