A lightweight (2.9k) alternative to mixpanel-js with offline support for Hybrid and Progressive Web Apps.

Events are written to localStorage first and are only removed once the Mixpanel HTTP API confirms receipt, thus allowing the device to go offline without losing events.

Add mixpanel-lite.min.js to your project:

<script src="mixpanel-lite.min.js"></script>

At present only the following methods are supported:

// setup mixpanel
mixpanel.init('your-token-here'); // pass { mute: true } to mute by default

// assign all future events to a user
mixpanel.identify('user@email.com');

// register 'Gender' as a super property
mixpanel.register({'Gender': 'Female'});

// assign user info
mixpanel.people.set({
    $email: 'user@email.com' // only special properties need the $
});

// track an event
mixpanel.track('Your Event Name' {
    firstName: 'Optional event property 1',
    lastName: 'Optional event property 2'
});

// get super property
mixpanel.getProperty('distinct_id');

// clear current identity
mixpanel.reset();

// stop sending data to mixpanel (calls to track, identify etc are ignored)
mixpanel.mute();

// resume sending data to mixpanel
mixpanel.unmute();

// check if mixpanel is muted
if (mixpanel.muted) {
    console.log('Mixpanel is disabled');
}

mixpanel-lite adds additional properties to each tracking event:

Pull requests are welcomed:

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -m 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request

mixpanel-lite uses window.localStorage and window.Promise which should exist in all modern browsers.

To generate a new mixpanel-lite.min.js from source, tweak the version number in package.json and run:

npm run build

Star the repo if you find this useful as it helps me prioritize which bugs I should tackle first.

For change-log, check releases.

Licensed under MIT License © John Doherty