Add JSONAPI decorator

slow/slow.py

@@ -159,3 +159,18 @@ def JSONResponse(d: dict, status=200):
     return HTTPResponse(
         json.dumps(d), status=status, content_type="text/json; charset=utf-8"
     )
+
+
+def JSONAPI(func):
+    def wrapper(*args, **kwargs):
+        result = func(*args, **kwargs)
+        if not isinstance(result, dict):
+            if (
+                isinstance(result, tuple)
+                and len(result) == 2
+                and isinstance(result[1], dict)
+                and isinstance(result[0], int)
+            ):
+                return JSONResponse(result[1], result[0])
+            raise RuntimeError("Return value of JSONAPI route is not a dictionary")
+        return JSONResponse(result)