Introspection: change includeDeprecated: Boolean to Boolean!

Author: BoD

src/type/__tests__/introspection-test.ts

@@ -162,9 +162,13 @@ describe('Introspection', () => {
                     {
                       name: 'includeDeprecated',
                       type: {
-                        kind: 'SCALAR',
-                        name: 'Boolean',
-                        ofType: null,
+                        kind: 'NON_NULL',
+                        name: null,
+                        ofType: {
+                          kind: 'SCALAR',
+                          name: 'Boolean',
+                          ofType: null,
+                        },
                       },
                       defaultValue: 'false',
                     },

src/type/introspection.ts

@@ -73,7 +73,10 @@ export const __Schema: GraphQLObjectType = new GraphQLObjectType({
           new GraphQLList(new GraphQLNonNull(__Directive)),
         ),
         args: {
-          includeDeprecated: { type: GraphQLBoolean, defaultValue: false },
+          includeDeprecated: {
+            type: new GraphQLNonNull(GraphQLBoolean),
+            defaultValue: false,
+          },
         },
         resolve: (schema, { includeDeprecated }) =>
           includeDeprecated

src/utilities/__tests__/printSchema-test.ts

@@ -717,7 +717,7 @@ describe('Type System Printer', () => {
         subscriptionType: __Type
 
         """A list of all directives supported by this server."""
-        directives(includeDeprecated: Boolean = false): [__Directive!]!
+        directives(includeDeprecated: Boolean! = false): [__Directive!]!
       }
 
       """