### Styler Code Rewriting Example: Case to If

Source: https://hexdocs.pm/styler/1.9.1/styler

This example illustrates a potential behavioral change introduced by Styler. It shows how a `case` statement that would raise an error for non-boolean inputs can be rewritten by Styler into an `if` statement, which might not raise an error in the same scenarios.

```elixir
# Before: this case statement...
case foo do
  true -> :ok
  false -> :error
end

# After: ... is rewritten by Styler to be an if statement!.
if foo do
  :ok
else
  :error
end
```

--------------------------------

### Configure Styler Plugin in .formatter.exs

Source: https://hexdocs.pm/styler/1.9.1/styler

This code adds Styler as a plugin to your `.formatter.exs` file, enabling its formatting and rewriting capabilities when you run `mix format`. This is the primary way to activate Styler in your project.

```elixir
[
  plugins: [Styler]
]
```

--------------------------------

### Add Styler Dependency to mix.exs

Source: https://hexdocs.pm/styler/1.9.1/styler

This snippet shows how to add Styler as a development and test dependency in your Elixir project's `mix.exs` file. It specifies the version and ensures Styler is only used during development and testing.

```elixir
def deps do
  [
    {:styler, ">= 1.9", only: [:dev, :test], runtime: false}
  ]
end
```

--------------------------------

### Configure Styler Options in .formatter.exs

Source: https://hexdocs.pm/styler/1.9.1/styler

This snippet demonstrates advanced Styler configuration within your `.formatter.exs` file. It shows how to set `alias_lifting_exclude` to prevent specific modules from being auto-aliased and `minimum_supported_elixir_version` to control deprecation rewrites.

```elixir
[
  plugins: [Styler],
  styler:
    alias_lifting_exclude: [...],
    minimum_supported_elixir_version: "..."
]
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.