doc: correct info in child_process.md

`child.stderr`, `child.stdin`, and `child.stdout` are `null`, not `undefined`, if the relevant `stdio` properties are set to anything other than 'pipe'. PR-URL: #11949 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Evan Lucas <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Apr 18, 2017 · e1479f4 · e1479f4
1 parent de59a13
commit e1479f4
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/doc/api/child_process.md b/doc/api/child_process.md
@@ -1067,7 +1067,7 @@ added: v0.1.90
 A `Readable Stream` that represents the child process's `stderr`.
 
 If the child was spawned with `stdio[2]` set to anything other than `'pipe'`,
-then this will be `undefined`.
+then this will be `null`.
 
 `child.stderr` is an alias for `child.stdio[2]`. Both properties will refer to
 the same value.
@@ -1085,7 +1085,7 @@ A `Writable Stream` that represents the child process's `stdin`.
 continue until this stream has been closed via `end()`.*
 
 If the child was spawned with `stdio[0]` set to anything other than `'pipe'`,
-then this will be `undefined`.
+then this will be `null`.
 
 `child.stdin` is an alias for `child.stdio[0]`. Both properties will refer to
 the same value.
@@ -1140,7 +1140,7 @@ added: v0.1.90
 A `Readable Stream` that represents the child process's `stdout`.
 
 If the child was spawned with `stdio[1]` set to anything other than `'pipe'`,
-then this will be `undefined`.
+then this will be `null`.
 
 `child.stdout` is an alias for `child.stdio[1]`. Both properties will refer
 to the same value.