Add better types for `responses`

src/lib/Chat.svelte

@@ -91,7 +91,7 @@
         })
       ).json();
     } catch (e) {
-      response = { error: { message: e.message } };
+      response = { status: "error", error: { message: e.message } };
     }
 
     // Hide updating bar
@@ -113,7 +113,7 @@
 
     const response = await sendRequest(chat.messages);
 
-    if (response.error) {
+    if (response.status === "error") {
       addMessage(chatId, {
         role: "system",
         content: `Error: ${response.error.message}`,
@@ -135,7 +135,7 @@
 
     const response = await sendRequest(chat.messages);
 
-    if (response.error) {
+    if (response.status === "error") {
       addMessage(chatId, {
         role: "system",
         content: `Error: ${response.error.message}`,

src/lib/Types.svelte

@@ -17,6 +17,28 @@
     total_tokens: number;
   };
 
-  // TODO: add better type here, for now a generic JSON type
-  export type Response = Record<string, any>;
+  type ResponseOK = {
+    status: "ok";
+    id: string;
+    object: string;
+    created: number;
+    choices: {
+      index: number;
+      message: Message;
+      finish_reason: string;
+    }[];
+    usage: Usage;
+  };
+
+  type ResponseError = {
+    status: "error";
+    error: {
+      message: string;
+      type?: string;
+      param?: string | null;
+      code?: string | null;
+    };
+  };
+
+  export type Response = ResponseOK | ResponseError;
 </script>