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Isabelle Viktoria Maciohsek
2020-10-20 23:02:01 +03:00
parent 52880f08ee
commit caa67e2a49
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snippets/isDuplexStream.md
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@ -5,7 +5,8 @@ tags: node,type,intermediate
Checks if the given argument is a duplex (readable and writable) stream.
- Check if the value is different from `null`, use `typeof` to check if a value is of type `object` and the `pipe` property is of type `function`.
- Check if the value is different from `null`.
- Use `typeof` to check if a value is of type `object` and the `pipe` property is of type `function`.
- Additionally check if the `typeof` the `_read`, `_write` and `_readableState`, `_writableState` properties are `function` and `object` respectively.
```js