Greatly reduce repeated code

functions/api/reports/recall.ts

@@ -1,13 +1,9 @@
+import { jsonError } from "../../common.js";
+
 export async function onRequestPost(context: RequestContext) {
   const { id } = context.data.body;
 
-  if (!id)
-    return new Response('{"error":"No ID provided"}', {
-      headers: {
-        "content-type": "application/json",
-      },
-      status: 400,
-    });
+  if (!id) return jsonError("No ID provided", 400);
 
   const reportUserId = await context.env.DATA.get(`reportprocessing_${id}`);
 
@@ -16,12 +12,7 @@ export async function onRequestPost(context: RequestContext) {
     (context.data.current_user?.id !== reportUserId &&
       context.request.headers.get("CF-Connecting-IP") !== reportUserId)
   )
-    return new Response('{"error":"No processing report with that ID found"}', {
-      headers: {
-        "content-type": "application/json",
-      },
-      status: 404,
-    });
+    return jsonError("No processing report with that ID found", 404);
 
   await context.env.DATA.delete(`report_${id}`);