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doc: add a note to buf.fill() description #25547

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4 changes: 3 additions & 1 deletion doc/api/buffer.md
Original file line number Diff line number Diff line change
Expand Up @@ -1238,7 +1238,9 @@ console.log(b.toString());
// Prints: hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
```

`value` is coerced to a `uint32` value if it is not a string or integer.
`value` is coerced to a `uint32` value if it is not a string, `Buffer`, or
integer. If the resulting integer is greater than `255` (decimal), `buf` will be
filled with `0`.

If the final write of a `fill()` operation falls on a multi-byte character,
then only the bytes of that character that fit into `buf` are written:
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