feat: extract parseJSON()

web/src/core/utils/json.ts

@@ -0,0 +1,17 @@
+import { parse } from "best-effort-json-parser";
+
+export function parseJSON<T>(json: string | null | undefined, fallback: T) {
+  if (!json) {
+    return fallback;
+  }
+  try {
+    const raw = json
+      .trim()
+      .replace(/^```json\s*/, "")
+      .replace(/^```\s*/, "")
+      .replace(/\s*```$/, "");
+    return parse(raw) as T;
+  } catch {
+    return fallback;
+  }
+}