child_process: rename _validateStdtio to getValidStdio

The name indicated only validation while it did much more and it
returned a different value to the callee function. The underscore
was also not necessary as the function is internal one way or the
other.

PR-URL: https://github.com/nodejs/node/pull/26809
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/child_process.js

@@ -41,7 +41,7 @@ const {
 const { validateString, isInt32 } = require('internal/validators');
 const child_process = require('internal/child_process');
 const {
-  _validateStdio,
+  getValidStdio,
   setupChannel,
   ChildProcess
 } = child_process;
@@ -577,7 +577,7 @@ function spawnSync(file, args, options) {
   // Validate and translate the kill signal, if present.
   options.killSignal = sanitizeKillSignal(options.killSignal);
 
-  options.stdio = _validateStdio(options.stdio || 'pipe', true).stdio;
+  options.stdio = getValidStdio(options.stdio || 'pipe', true).stdio;
 
   if (options.input) {
     var stdin = options.stdio[0] = { ...options.stdio[0] };

lib/internal/child_process.js

@@ -315,7 +315,7 @@ ChildProcess.prototype.spawn = function(options) {
   // If no `stdio` option was given - use default
   var stdio = options.stdio || 'pipe';
 
-  stdio = _validateStdio(stdio, false);
+  stdio = getValidStdio(stdio, false);
 
   ipc = stdio.ipc;
   ipcFd = stdio.ipcFd;
@@ -873,7 +873,7 @@ function isInternal(message) {
 
 function nop() { }
 
-function _validateStdio(stdio, sync) {
+function getValidStdio(stdio, sync) {
   var ipc;
   var ipcFd;
 
@@ -1028,6 +1028,6 @@ function spawnSync(opts) {
 module.exports = {
   ChildProcess,
   setupChannel,
-  _validateStdio,
+  getValidStdio,
   spawnSync
 };

test/parallel/test-child-process-validate-stdio.js

@@ -3,21 +3,21 @@
 
 const common = require('../common');
 const assert = require('assert');
-const _validateStdio = require('internal/child_process')._validateStdio;
+const getValidStdio = require('internal/child_process').getValidStdio;
 
 const expectedError =
   common.expectsError({ code: 'ERR_INVALID_OPT_VALUE', type: TypeError }, 2);
 
 // Should throw if string and not ignore, pipe, or inherit
-assert.throws(() => _validateStdio('foo'), expectedError);
+assert.throws(() => getValidStdio('foo'), expectedError);
 
 // Should throw if not a string or array
-assert.throws(() => _validateStdio(600), expectedError);
+assert.throws(() => getValidStdio(600), expectedError);
 
 // Should populate stdio with undefined if len < 3
 {
   const stdio1 = [];
-  const result = _validateStdio(stdio1, false);
+  const result = getValidStdio(stdio1, false);
   assert.strictEqual(stdio1.length, 3);
   assert.strictEqual(result.hasOwnProperty('stdio'), true);
   assert.strictEqual(result.hasOwnProperty('ipc'), true);
@@ -26,14 +26,14 @@ assert.throws(() => _validateStdio(600), expectedError);
 
 // Should throw if stdio has ipc and sync is true
 const stdio2 = ['ipc', 'ipc', 'ipc'];
-common.expectsError(() => _validateStdio(stdio2, true),
+common.expectsError(() => getValidStdio(stdio2, true),
                     { code: 'ERR_IPC_SYNC_FORK', type: Error }
 );
 
 
 if (common.isMainThread) {
   const stdio3 = [process.stdin, process.stdout, process.stderr];
-  const result = _validateStdio(stdio3, false);
+  const result = getValidStdio(stdio3, false);
   assert.deepStrictEqual(result, {
     stdio: [
       { type: 'fd', fd: 0 },