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doc: update behaviour of fs.writeFile #25080

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doc: update behaviour of fs.writeFile 
As per the decision in #23433,
the `fs.writeFile` will always write from the current position if it
is used with file descriptors. This patch updates it.

Ref: #23709
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@thefourtheye
thefourtheye committed Dec 26, 2018
commit 55822cfbc5c270fb12293c376fe9dafb10d1cccb
8 changes: 4 additions & 4 deletions doc/api/fs.md
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Expand Up @@ -3605,10 +3605,10 @@ recommended.
1. Any specified file descriptor has to support writing.
2. If a file descriptor is specified as the `file`, it will not be closed
automatically.
3. The writing will begin at the beginning of the file. For example, if the
file already had `'Hello World'` and the newly written content is `'Aloha'`,
then the contents of the file would be `'Aloha World'`, rather than just
`'Aloha'`.
3. The writing will begin at the current position. For example, if the string
`'Hello'` is written to the file descriptor, and if `', World'` is written with
`fs.writeFile()` to the same file descriptor, the contents of the file would
become `'Hello, World'`, instead of just `', World'`.


## fs.writeFileSync(file, data[, options])
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