> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tappify.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# MatcherTarget

> The part of a runner's expect that registerTapMatchers needs.

The part of a runner's `expect` that `registerTapMatchers` needs.

## Methods

### extend()

```ts theme={null}
extend(matchers): void;
```

Both runners take a map of matcher functions keyed by matcher name.

#### Parameters

##### matchers

`Record`\<`string`, `unknown`>

#### Returns

`void`