Add a space between array items, as per object keys

Author: dupski

src/__tests__/jsonToGraphQLQuery.tests.ts

@@ -112,7 +112,7 @@ describe('jsonToGraphQL()', () => {
         };
         expect(jsonToGraphQLQuery(query, { pretty: true })).to.equal(
 `query {
-    Posts (or: [{published: true},{rating: [{_gt: 3}]}], orderBy: "post_date") {
+    Posts (or: [{published: true}, {rating: [{_gt: 3}]}], orderBy: "post_date") {
         id
         title
         post_date

src/jsonToGraphQLQuery.ts

@@ -6,7 +6,7 @@ function stringify(obj_from_json: any): string {
         return JSON.stringify(obj_from_json);
     }
     else if (Array.isArray(obj_from_json)) {
-        return `[${obj_from_json.map((item) => stringify(item)).join(',')}]`;
+        return `[${obj_from_json.map((item) => stringify(item)).join(', ')}]`;
     }
     // Implements recursive object serialization according to JSON spec
     // but without quotes around the keys.