From 36eb02f168eaa179e260010443fd33e526a94763 Mon Sep 17 00:00:00 2001
From: RasPhilCo <capt.pn@gmail.com>
Date: Wed, 9 Sep 2020 11:33:43 -0500
Subject: [PATCH] fix: accept integer 0 as valid arg input (#34)

---
 src/parser/validate.ts       |  2 +-
 test/parser/validate.test.ts | 11 ++++++++---
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/parser/validate.ts b/src/parser/validate.ts
index b8b522ff1..d17c09898 100644
--- a/src/parser/validate.ts
+++ b/src/parser/validate.ts
@@ -34,7 +34,7 @@ export function validate(parse: {
       }
 
       if (arg.required) {
-        if (!parse.output.argv[index]) {
+        if (!parse.output.argv[index] && parse.output.argv[index] as any as number !== 0) {
           missingRequiredArgs.push(arg)
         }
       }
diff --git a/test/parser/validate.test.ts b/test/parser/validate.test.ts
index 2f76271d3..85324f295 100644
--- a/test/parser/validate.test.ts
+++ b/test/parser/validate.test.ts
@@ -89,15 +89,20 @@ describe('validate', () => {
           required: true,
         },
       },
-      args: [],
+      args: [
+        {
+          name: 'zero',
+          required: true,
+        },
+      ],
       strict: true,
       context: {},
       '--': true,
     }
 
     const output = {
-      args: {},
-      argv: [],
+      args: {zero: 0},
+      argv: [0],
       flags: {int: 0},
       raw: [],
       metadata: {