make json str response not nullable (#181)

Author: jairad26

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Update to v2 Hypermode metadata format [#176](https://github.com/hypermodeAI/functions-as/pull/176)
 - Fix display output of certain types during build [#180](https://github.com/hypermodeAI/functions-as/pull/180)
+- Make json in dgraph response not nullable [#181](https://github.com/hypermodeAI/functions-as/pull/181)
 
 ## 2024-08-27 - Version 0.11.2
 

examples/dgraph/assembly/index.ts

@@ -28,7 +28,7 @@ export function alterSchema(): string {
 }
 
 // This function returns the results of querying for all people in the database.
-export function queryPeople(): Person[] | null {
+export function queryPeople(): Person[] {
   const query = `
   {
     people(func: type(Person)) {
@@ -44,8 +44,7 @@ export function queryPeople(): Person[] | null {
     new dgraph.Request(new dgraph.Query(query)),
   );
 
-  if (resp.Json === null) return null;
-  return JSON.parse<PeopleData>(resp.Json!).people;
+  return JSON.parse<PeopleData>(resp.Json).people;
 }
 
 // This function returns the results of querying for a specific person in the database.
@@ -72,8 +71,7 @@ export function querySpecificPerson(
     new dgraph.Request(new dgraph.Query(statement, vars)),
   );
 
-  if (resp.Json === null) return null;
-  const people = JSON.parse<PeopleData>(resp.Json!).people;
+  const people = JSON.parse<PeopleData>(resp.Json).people;
 
   if (people.length === 0) return null;
   return people[0];
@@ -141,14 +139,13 @@ export function deletePerson(uid: string): Map<string, string> | null {
 }
 
 // This function demonstrates what happens when a bad query is executed.
-export function testBadQuery(): Person[] | null {
+export function testBadQuery(): Person[] {
   const query = "this is a bad query";
 
   const resp = dgraph.execute(
     hostName,
     new dgraph.Request(new dgraph.Query(query)),
   );
 
-  if (resp.Json === null) return null;
-  return JSON.parse<PeopleData>(resp.Json!).people;
+  return JSON.parse<PeopleData>(resp.Json).people;
 }

src/assembly/dgraph.ts

@@ -141,7 +141,7 @@ export class Mutation {
  *
  */
 export class Response {
-  Json: string | null = null;
+  Json: string = "";
   Uids: Map<string, string> | null = null;
 }