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Typings for createEventDispatcher #5260

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merged 1 commit into from
Aug 12, 2020
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dummdidumm
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Makes it possible to explicitly type which events can be dispatched like so:

const bla2 = createEventDispatcher<{click: boolean}>();
bla2('click', ''); // error, type string not assignable to type boolean
bla2('qwd', true); // error, "qwd" not assignable to "click"

#5211

Makes it possible to explicitly type which events can be dispatched like so:

```ts
const bla2 = createEventDispatcher<{click: boolean}>();
bla2('click', ''); // error, type string not assignable to type boolean
bla2('qwd', true); // error, "qwd" not assignable to "click"
```

sveltejs#5211
@Conduitry
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Very cool, I had no idea something like this was possible in TS. Thank you!

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2 participants