From 2dbe86b1d6dba7d1d2d54de6a0171c42f8b75cae Mon Sep 17 00:00:00 2001
From: Esteban <elas7@users.noreply.github.com>
Date: Fri, 8 Apr 2016 20:59:07 -0300
Subject: [PATCH] fix(boolean): fix for boolean options with non boolean
 defaults (#20)

---
 index.js             | 2 +-
 test/yargs-parser.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 25943502..83c69c2c 100644
--- a/index.js
+++ b/index.js
@@ -497,7 +497,7 @@ function parse (args, opts) {
       o[key] = increment(o[key])
     } else if (o[key] === undefined && checkAllAliases(key, flags.arrays)) {
       o[key] = Array.isArray(value) ? value : [value]
-    } else if (o[key] === undefined || typeof o[key] === 'boolean') {
+    } else if (o[key] === undefined || checkAllAliases(key, flags.bools)) {
       o[key] = value
     } else if (Array.isArray(o[key])) {
       o[key].push(value)
diff --git a/test/yargs-parser.js b/test/yargs-parser.js
index 00e5b53d..0858b19d 100644
--- a/test/yargs-parser.js
+++ b/test/yargs-parser.js
@@ -879,7 +879,7 @@ describe('yargs-parser', function () {
     })
 
     describe('for boolean options', function () {
-      [true, false, undefined].forEach(function (def) {
+      [true, false, undefined, null].forEach(function (def) {
         describe('with explicit ' + def + ' default', function () {
           var opts = {
             default: {