tKO 4.0.0-alpha3 Perf Test

HTML

<script src="https://rawgit.com/brianmhunt/tko-alpha-pub/master/ko.js"></script>
<div id='x'>
  <strong>{{ count }} / {{ time }} ms</strong>
  <custom-component></custom-component>
</div>

<div id='cc-template'>
   cc
   {{# unless: finished }}
      <custom-component></custom-component>
   {{ /unless }}
</div>

JavaScript

let count = ko.observable(0)
let time = ko.observable(false)
const start = performance.now()
const ITERATIONS = 1000

const viewModel = function () {
        vm = {};

        vm.finished = count() > ITERATIONS;
        count(count() + 1);
        time(performance.now() - start);

        vm.amazingFunction = function () {
            // do things
        };

        return vm;
    };

ko.components.register("custom-component", {
  viewModel, template: {element: 'cc-template'}
})

ko.applyBindings({count, time}, document.getElementById('x'))