[v17.x backport] fs: fix write methods param validation and docs #42631
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The FS docs wrongfully indicated support for passing object with an own `toString` function property to `FileHandle.prototype.appendFile`, `FileHandle.prototype.writeFile`, `FileHandle.prototype.write`, `fsPromises.writeFile`, and `fs.writeSync`. This commit fixes that, and adds some test to ensure the actual behavior is aligned with the docs. It also fixes a bug that makes the process crash if a non-buffer object was passed to `FileHandle.prototype.write`. Refs: nodejs#34993 PR-URL: nodejs#41677 Refs: nodejs#41666 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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The FS docs wrongfully indicated support for passing object with an own `toString` function property to `FileHandle.prototype.appendFile`, `FileHandle.prototype.writeFile`, `FileHandle.prototype.write`, `fsPromises.writeFile`, and `fs.writeSync`. This commit fixes that, and adds some test to ensure the actual behavior is aligned with the docs. It also fixes a bug that makes the process crash if a non-buffer object was passed to `FileHandle.prototype.write`. Refs: #34993 PR-URL: #41677 Backport-PR-URL: #42631 Refs: #41666 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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Backport of #41677.
/cc @juanarbol in case it's still time to pull it to v17.9.0.