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[`Component`](Component) › [`register`](Component/register)
## Component.register() method
Registers a callback to be called when unloading
**Signature:**
```typescript
register(cb: () => any): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>cb</code> | <code>() => any</code> | |
**Returns:**
`void`