feat: warn response format

Author: loks0n

templates/node/src/client.ts.twig

@@ -18,6 +18,12 @@ type Headers = {
     [key: string]: string;
 }
 
+function greaterThan(v1, v2) {
+    const [a, b, c] = v1.split('.').map(Number);
+    const [x, y, z] = v2.split('.').map(Number);
+    return a > x || a === x && (b > y || b === y && c > z);
+}
+
 class {{spec.title | caseUcfirst}}Exception extends Error {
     code: number;
     response: string;
@@ -262,6 +268,12 @@ class Client {
 
         const response = await fetch(uri, options);
 
+        const latestFormat = responseType.headers.get('x-appwrite-default-response-format');
+        const sentFormat = headers['x-appwrite-response-format'];
+        if (defaultFormat && sentFormat && greaterThan(sentFormat, defaultFormat)) {
+            console.warn(`Request made with SDK version {{ sdk.version }} using response format ${sentFormat} while the server latest is ${defaultFormat}. This may lead to unexpected behavior. Please downgrade your SDK version to match the server default. {{ sdk.url}}
+        }
+
         if (response.headers.get('content-type')?.includes('application/json')) {
             data = await response.json();
         } else if (responseType === 'arrayBuffer') {