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# MetaMask Plugin [](https://circleci.com/gh/MetaMask/metamask-plugin)
## Building locally
- Install [Node.js](https://nodejs.org/en/) version 6 or later.
- Install local dependencies with `npm install`.
- Install gulp globally with `npm install -g gulp`.
- Build the project to the `./dist/` folder with `gulp build`.
- Optionally, to rebuild on file changes, run `gulp dev`.
## Architecture
[][1]
## Development
```bash
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:
```bash
npm install gulpjs/gulp-cli#4.0 -g
```
After that, you can just:
```bash
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.
#### In Firefox (Developer Edition Only)
Go to the url `about:debugging`.
Click the button `Load Temporary Add-On`.
Select the file `dist/manifest.json`.
You can optionally enable debugging, and click `Debug`, for a console window that logs all of Metamask's processes to a single console.
### 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 on UI with Mocked Background Process
You can run `npm run mock` and your browser should open a live-reloading demo version of the plugin UI, just like the `npm run ui`, except that it tries to actually perform all normal operations.
It does not yet connect to a real blockchain (this could be a good test feature later, connecting to a test blockchain), so only local operations work.
You can reset the mock ui at any time with the `Reset` button at the top of the screen.
### Developing on Dependencies
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](https://chrome.google.com/webstore/developer/dashboard?authuser=2).
2. Zip the `dist` folder in this repository.
3. Upload that zip file as the updated package.
[1]: http://www.nomnoml.com/#view/%5B%3Cactor%3Euser%5D%0A%0A%5Bmetamask-ui%7C%0A%20%20%20%5Btools%7C%0A%20%20%20%20%20react%0A%20%20%20%20%20redux%0A%20%20%20%20%20thunk%0A%20%20%20%20%20ethUtils%0A%20%20%20%20%20jazzicon%0A%20%20%20%5D%0A%20%20%20%5Bcomponents%7C%0A%20%20%20%20%20app%0A%20%20%20%20%20account-detail%0A%20%20%20%20%20accounts%0A%20%20%20%20%20locked-screen%0A%20%20%20%20%20restore-vault%0A%20%20%20%20%20identicon%0A%20%20%20%20%20config%0A%20%20%20%20%20info%0A%20%20%20%5D%0A%20%20%20%5Breducers%7C%0A%20%20%20%20%20app%0A%20%20%20%20%20metamask%0A%20%20%20%20%20identities%0A%20%20%20%5D%0A%20%20%20%5Bactions%7C%0A%20%20%20%20%20%5BaccountManager%5D%0A%20%20%20%5D%0A%20%20%20%5Bcomponents%5D%3A-%3E%5Bactions%5D%0A%20%20%20%5Bactions%5D%3A-%3E%5Breducers%5D%0A%20%20%20%5Breducers%5D%3A-%3E%5Bcomponents%5D%0A%5D%0A%0A%5Bweb%20dapp%7C%0A%20%20%5Bui%20code%5D%0A%20%20%5Bweb3%5D%0A%20%20%5Bmetamask-inpage%5D%0A%20%20%0A%20%20%5B%3Cactor%3Eui%20developer%5D%0A%20%20%5Bui%20developer%5D-%3E%5Bui%20code%5D%0A%20%20%5Bui%20code%5D%3C-%3E%5Bweb3%5D%0A%20%20%5Bweb3%5D%3C-%3E%5Bmetamask-inpage%5D%0A%5D%0A%0A%5Bmetamask-background%7C%0A%20%20%5Bprovider-engine%5D%0A%20%20%5Bhooked%20wallet%20subprovider%5D%0A%20%20%5Bid%20store%5D%0A%20%20%0A%20%20%5Bprovider-engine%5D%3C-%3E%5Bhooked%20wallet%20subprovider%5D%0A%20%20%5Bhooked%20wallet%20subprovider%5D%3C-%3E%5Bid%20store%5D%0A%20%20%5Bconfig%20manager%7C%0A%20%20%20%20%5Brpc%20configuration%5D%0A%20%20%20%20%5Bencrypted%20keys%5D%0A%20%20%20%20%5Bwallet%20nicknames%5D%0A%20%20%5D%0A%20%20%0A%20%20%5Bprovider-engine%5D%3C-%5Bconfig%20manager%5D%0A%20%20%5Bid%20store%5D%3C-%3E%5Bconfig%20manager%5D%0A%5D%0A%0A%5Buser%5D%3C-%3E%5Bmetamask-ui%5D%0A%0A%5Buser%5D%3C%3A--%3A%3E%5Bweb%20dapp%5D%0A%0A%5Bmetamask-contentscript%7C%0A%20%20%5Bplugin%20restart%20detector%5D%0A%20%20%5Brpc%20passthrough%5D%0A%5D%0A%0A%5Brpc%20%7C%0A%20%20%5Bethereum%20blockchain%20%7C%0A%20%20%20%20%5Bcontracts%5D%0A%20%20%20%20%5Baccounts%5D%0A%20%20%5D%0A%5D%0A%0A%5Bweb%20dapp%5D%3C%3A--%3A%3E%5Bmetamask-contentscript%5D%0A%5Bmetamask-contentscript%5D%3C-%3E%5Bmetamask-background%5D%0A%5Bmetamask-background%5D%3C-%3E%5Bmetamask-ui%5D%0A%5Bmetamask-background%5D%3C-%3E%5Brpc%5D%0A
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