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feat: add type parameter to EventTarget #1712

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feat: add type parameter to EventTarget #1712

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Commits on May 3, 2024

  1. feat: add type parameter to EventTarget 

    This introduces a type parameter to `EventTarget` such that the
following is now possible:

```ts
interface CustomMap {
  'test-event': CustomEvent<{x: number; y: number}>;
}

declare const customTarget: EventTarget<CustomMap>;

customTarget.addEventListener('test-event', (event) => {
  // event is now `CustomEvent<{x: number; y: number}>`
  event.detail.x;
  event.detail.y;
});
```

Defaults to `T = any` to maintain existing behaviour otherwise.
    @43081j
    43081j committed May 3, 2024
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