Does a WriteStream have to be closed?

I used `var writeStream = fs.createWriteStream('...')` to open a WriteStream, but there is no `writeStream.close()` function. How is this handled in node?

Call `stream.end()`

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Stream Has to be close after you done your file's writing work.
use

```
stream.end()
```
1. You can't use **stream.write('xxx')** after **stream.end()**.
2. While you don't have end/close the writeable stream, you/other can write into file anytime, and NodeJS will keep writable stream's reference in RAM.