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Angelos Chalaris
2020-09-15 16:28:04 +03:00
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snippets/isWritableStream.md
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@ -5,8 +5,8 @@ tags: node,type,intermediate
Checks if the given argument is a writable stream.
Check if the value is different from `null`, use `typeof` to check if the value is of type `object` and the `pipe` property is of type `function`.
Additionally check if the `typeof` the `_write` and `_writableState` properties are `function` and `object` respectively.
- Check if the value is different from `null`, use `typeof` to check if the value is of type `object` and the `pipe` property is of type `function`.
- Additionally check if the `typeof` the `_write` and `_writableState` properties are `function` and `object` respectively.
```js
const isWritableStream = val =>