MetaMask Plugin

Architecture

Development

npm install

Developing on UI Only

You can run npm run ui, and your browser should open a live-reloading demo version of the plugin UI.

Some actions will crash the app, so this is only for tuning aesthetics, but it allows live-reloading styles, which is a much faster feedback loop than reloading the full extension.

Developing with Gulp

We're using an experimental version of gulp-cli, so if you have the old version of gulp, you'll need to uninstall it, npm uninstall -g gulp, and install this one instead:

npm install gulpjs/gulp-cli#4.0 -g

After that, you can just:

gulp dev

In Chrome

Open Settings > Extensions.

Check "Developer mode".

At the top, click Load Unpacked Extension.

Navigate to your metamask-plugin/dist folder.

Click Select.

You now have the plugin, and can click 'inspect views: background plugin' to view its dev console.

Developing the UI

To enjoy the live-reloading that gulp dev offers while working on the web3-provider-engine or other dependencies:

1. Clone the dependency locally.
2. npm install in its folder.
3. Run npm link in its folder.
4. Run npm link $DEP_NAME in this project folder.
5. Next time you gulp dev it will watch the dependency for changes as well!

Running Tests

Requires mocha installed. Run npm install -g mocha.

Then just run npm test.

You can also test with a continuously watching process, via npm run watch.

You can run the linter by itself with gulp lint.

Deploying the UI

You must be authorized already on the MetaMask plugin.

0. Update the version in app/manifest.json and the Changelog in CHANGELOG.md.
1. Visit the chrome developer dashboard.
2. Zip the dist folder in this repository.
3. Upload that zip file as the updated package.