No longer do our `mainnet` and `testnet` buttons set specific RPC urls. Now they set `provider.type`, which gets interpreted with code. Currently the provider types of `mainnet` and `testnet` point to our new scalable backends, but these could be re-interpreted to use any other provider, be it etherscan, peer to peer, or otherwise. Makes it easier for us to upgrade our infrastructure without incorporating migration logic into the program.
Metamask Plugin 
Development
npm install
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:
- Clone the dependency locally.
npm install
in its folder.- Run
npm link
in its folder. - Run
npm link $DEP_NAME
in this project folder. - 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
.
Deploying the UI
You must be authorized already on the Metamask plugin.
- Update the version in
app/manifest.json
and the Changelog inCHANGELOG.md
. - Visit the chrome developer dashboard.
- Zip the
dist
folder in this repository. - Upload that zip file as the updated package.