---
url: /reference/@cssdoc/providers/functions/definitionForClass.md
---
# Function: definitionForClass()

```ts
function definitionForClass(
   base, 
   token, 
   index
): Location | undefined;
```

Defined in: [packages/providers/src/index.ts:203](https://github.com/thedannywahl/cssdoc/blob/main/packages/providers/src/index.ts#L203)

Definition of a class token: the modifier's rule, else the component's.

## Parameters

### base

`string`

### token

`string`

### index

[`CssDocIndex`](../../index/classes/CssDocIndex.md)

## Returns

[`Location`](../../index/interfaces/Location.md) | `undefined`