trackr

Trackr

This is a fork of Meteor Tracker, the library formerly known as Meteor Deps. It has been repackaged into a standalone library that is ready to use in Node.js and the browser.

Trackr's API is almost identical to Meteor's version. Check out their documentation on Tracker and Using Deps since they are both fully relevant.

The only change that has been made is the addition of function context. Method context (this) can be added as an optional argument to the end of methods that accept functions. For example, here is how you would use autorun() with context:

var ctx = { foo: "bar" };

Trackr.autorun(function() {
    console.log(this.foo); // "bar"
}, ctx);

This also works for onInvalidate() and afterFlush() callbacks. onInvalidate() will fallback on the context provided to the computation if none is provided.