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---
layout: api
id: promiseinspection
title: PromiseInspection
---


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##PromiseInspection

```js
interface PromiseInspection {
    any reason()
    any value()
    boolean isPending()
    boolean isRejected()
    boolean isFulfilled()
    boolean isCancelled()
}
```

This interface is implemented by `Promise` instances as well as the `PromiseInspection` result given by [.reflect()](.).
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