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docs: Add note that process.send and child.send use JSON.stringify() #5723

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docs: Add note that process.send and child.send use JSON.stringify() #5723

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3 changes: 3 additions & 0 deletions doc/api/child_process.markdown
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Expand Up @@ -902,6 +902,8 @@ tracking when the socket is destroyed. To indicate this, the `.connections`
property becomes `null`. It is recommended not to use `.maxConnections` when
this occurs.

*Note: this function uses [`JSON.stringify()`][] internally to serialize the `message`.*

### child.stderr

* {Stream}
Expand Down Expand Up @@ -996,3 +998,4 @@ to the same value.
[`options.stdio`]: #child_process_options_stdio
[`stdio`]: #child_process_options_stdio
[synchronous counterparts]: #child_process_synchronous_process_creation
[`JSON.stringify()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
3 changes: 3 additions & 0 deletions doc/api/process.markdown
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Expand Up @@ -841,6 +841,8 @@ When Node.js is spawned with an IPC channel attached, it can send messages to it
parent process using `process.send()`. Each will be received as a
[`'message'`][] event on the parent's `ChildProcess` object.

*Note: this function uses [`JSON.stringify()`][] internally to serialize the `message`.*

If Node.js was not spawned with an IPC channel, `process.send()` will be undefined.

## process.setegid(id)
Expand Down Expand Up @@ -1096,3 +1098,4 @@ Will print something like:
[Signal Events]: #process_signal_events
[Stream compatibility]: stream.html#stream_compatibility_with_older_node_js_versions
[the tty docs]: tty.html#tty_tty
[`JSON.stringify()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify