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16 lines
274 B
Markdown
16 lines
274 B
Markdown
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sidebar_label: Predicate
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---
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# Predicate type
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#### Signature:
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```typescript
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export type Predicate<From, To extends From = From> =
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| ((value: From) => value is To)
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| ((value: From) => Awaitable<boolean>);
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```
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**References:** [Awaitable](./puppeteer.awaitable.md)
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