open-consul/ui/packages/consul-ui/app/helpers/class-map.mdx

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# class-map
`{{class-map}}` is used to easily add a list of classes, conditionally, and
have them all formatted nicely ready to be printed in a DOM `class` attribute.
For ease, as well as using entries, you can also just provide a simple string
without the boolean and that class will always be added.
```hbs preview-template
<figure>
<figcaption>
The correct classes added/omitted
</figcaption>
<div
class={{class-map
'component-name'
(array 'add-this-class' true)
(array 'dont-add-this-class' false)
'simple-string-class'
}}
...attributes
>
<code>
class="{{class-map
(array 'add-this-class' true)
(array 'dont-add-this-class' false)
'simple-string-class'
}}"
</code>
</div>
</figure>
```
## Positional Arguments
| Argument | Type | Default | Description |
| --- | --- | --- | --- |
| `entries` | `(classInfo \| string)[]` | | An array of 'entry-like' arrays of `classInfo`s to map |
## Types
| Type | Default | Description |
| --- | --- | --- |
| `classInfo` | `([string, boolean] \| [string])` | |