From de1d7f75a89f9a7edb448e74bf08a9b01c6cb41d Mon Sep 17 00:00:00 2001
From: ehmicky <ehmicky@gmail.com>
Date: Wed, 19 Jun 2019 10:00:00 +0200
Subject: [PATCH] Do not allow `stdin: 0` combined with `stdio`

---
 lib/stdio.js  | 2 +-
 test/stdio.js | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/stdio.js b/lib/stdio.js
index bef74aeead..fcc3a15128 100644
--- a/lib/stdio.js
+++ b/lib/stdio.js
@@ -1,7 +1,7 @@
 'use strict';
 const aliases = ['stdin', 'stdout', 'stderr'];
 
-const hasAlias = opts => aliases.some(alias => Boolean(opts[alias]));
+const hasAlias = opts => aliases.some(alias => opts[alias] !== undefined);
 
 const stdio = opts => {
 	if (!opts) {
diff --git a/test/stdio.js b/test/stdio.js
index 59cc648903..3aa5d37730 100644
--- a/test/stdio.js
+++ b/test/stdio.js
@@ -45,6 +45,7 @@ test(stdioMacro, {stdio: {foo: 'bar'}}, new TypeError('Expected `stdio` to be of
 test(stdioMacro, {stdin: 'inherit', stdio: 'pipe'}, new Error('It\'s not possible to provide `stdio` in combination with one of `stdin`, `stdout`, `stderr`'));
 test(stdioMacro, {stdin: 'inherit', stdio: ['pipe']}, new Error('It\'s not possible to provide `stdio` in combination with one of `stdin`, `stdout`, `stderr`'));
 test(stdioMacro, {stdin: 'inherit', stdio: [undefined, 'pipe']}, new Error('It\'s not possible to provide `stdio` in combination with one of `stdin`, `stdout`, `stderr`'));
+test(stdioMacro, {stdin: 0, stdio: 'pipe'}, new Error('It\'s not possible to provide `stdio` in combination with one of `stdin`, `stdout`, `stderr`'));
 
 const forkMacro = (...args) => macro(...args, stdio.node);
 forkMacro.title = macroTitle('execa.fork()');