# missingCapabilityMethods

Canonical: https://docs.shumoku.dev/en/library/api/missingCapabilityMethods
Language: en

@shumoku/core · 0.4.0 · function

# missingCapabilityMethods

[Source](https://github.com/konoe-akitoshi/shumoku/blob/main/libs/@shumoku/core/src/plugin-types.ts#L700)

Declared capabilities whose required method is missing on a constructed instance, formatted \`"cap → method()"\`. Empty array = compliant. Unknown (open) capabilities are skipped. The registry calls this once at first instantiate (decision 7) to catch a plugin that advertises a capability it doesn't actually implement (C6).

```
missingCapabilityMethods(plugin: DataSourcePlugin): string[]
```

## Parameters

| Parameter | Type | Description | Default |
| --- | --- | --- | --- |
| `plugin` | `DataSourcePlugin` | No additional description. | `—` |

## Returns

```
string[]
```

[`libs/@shumoku/core/src/plugin-types.ts:700`](https://github.com/konoe-akitoshi/shumoku/blob/main/libs/@shumoku/core/src/plugin-types.ts#L700)