# Setup

First of all, you need to have a `gh-pages`. If you don't have, create:

``` bash
git branch gh-pages
```

This makes a branch based on the `master` HEAD.
It would be okay but the files and the git history of `master` branch are not meaningful on `gh-pages` branch.
Using an `--orphan` branch, you can initialize `gh-pages` in a clean way.

``` bash
git checkout --orphan gh-pages
git reset --hard
git commit --allow-empty -m "Init gh-pages branch"
git checkout master
```

Then, mount the branch as a subdirectory using `git worktree`:

``` bash
git worktree add dist gh-pages
```

If you didn't ignore the `dist` folder, ignore it so that you don't add generated files accidentally in your `master` branch commits.

``` bash
echo "dist/" >> .gitignore
```

# Deploy

Every time you build the static bundle, generated files are in `dist` directory.
Since `dist` folder is now `gh-pages` branch, you can deploy it directly by just creating a commit and pushing it.

``` bash
cd dist
git add --all
git commit -m "Deploy on gh-pages updated"
git push origin gh-pages
```

This way nothing was added to the `master` branch history, keeping it clean.