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doc: added note to fs.watchFile on previousStat #16099

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9 changes: 9 additions & 0 deletions doc/api/fs.md
Original file line number Diff line number Diff line change
Expand Up @@ -2562,6 +2562,15 @@ v0.10.
`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and
`fs.unwatchFile` when possible.

*Note:* When a file being watched by `fs.watchFile()` disappears and reappears,
then the `previousStat` reported in the second callback event (the file's
reappearance) will be the same as the `previousStat` of the first callback
event (its disappearance).

This happens when:
- the file is deleted, followed by a restore
- the file is renamed twice - the second time back to its original name

## fs.write(fd, buffer[, offset[, length[, position]]], callback)
<!-- YAML
added: v0.0.2
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