From 257f9ef6f18597151701c95ea8533ed458f662ff Mon Sep 17 00:00:00 2001
From: Ivan Goncharov <ivan.goncharov.ua@gmail.com>
Date: Mon, 26 Aug 2019 18:12:05 +0300
Subject: [PATCH] GraphQLArgument: make 'description' undefined by default
 (#2132)

---
 src/type/__tests__/definition-test.js | 2 +-
 src/type/__tests__/directive-test.js  | 4 ++--
 src/type/definition.js                | 2 +-
 src/type/directives.js                | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/type/__tests__/definition-test.js b/src/type/__tests__/definition-test.js
index 77cee03a0f..f66ca60b87 100644
--- a/src/type/__tests__/definition-test.js
+++ b/src/type/__tests__/definition-test.js
@@ -243,7 +243,7 @@ describe('Type System: Objects', () => {
         args: [
           {
             name: 'arg',
-            description: null,
+            description: undefined,
             type: ScalarType,
             defaultValue: undefined,
             extensions: undefined,
diff --git a/src/type/__tests__/directive-test.js b/src/type/__tests__/directive-test.js
index 640b236613..38bbe852a9 100644
--- a/src/type/__tests__/directive-test.js
+++ b/src/type/__tests__/directive-test.js
@@ -36,7 +36,7 @@ describe('Type System: Directive', () => {
       args: [
         {
           name: 'foo',
-          description: null,
+          description: undefined,
           type: GraphQLString,
           defaultValue: undefined,
           extensions: undefined,
@@ -44,7 +44,7 @@ describe('Type System: Directive', () => {
         },
         {
           name: 'bar',
-          description: null,
+          description: undefined,
           type: GraphQLInt,
           defaultValue: undefined,
           extensions: undefined,
diff --git a/src/type/definition.js b/src/type/definition.js
index 3fe9920246..6986783723 100644
--- a/src/type/definition.js
+++ b/src/type/definition.js
@@ -783,7 +783,7 @@ function defineFieldMap<TSource, TContext>(
 
     const args = objectEntries(argsConfig).map(([argName, arg]) => ({
       name: argName,
-      description: arg.description === undefined ? null : arg.description,
+      description: arg.description,
       type: arg.type,
       defaultValue: arg.defaultValue,
       extensions: arg.extensions && toObjMap(arg.extensions),
diff --git a/src/type/directives.js b/src/type/directives.js
index 0d2071d5a1..2a8a119b52 100644
--- a/src/type/directives.js
+++ b/src/type/directives.js
@@ -83,7 +83,7 @@ export class GraphQLDirective {
 
     this.args = objectEntries(args).map(([argName, arg]) => ({
       name: argName,
-      description: arg.description === undefined ? null : arg.description,
+      description: arg.description,
       type: arg.type,
       defaultValue: arg.defaultValue,
       extensions: arg.extensions && toObjMap(arg.extensions),