feat: non-POJO check in rendered hook (#5137)

* feat: non-POJO check in rendered hook

Signed-off-by: Calum H. <contact@cal.engineer>

* fix: lint

* move to plugin

---------

Signed-off-by: Calum H. <contact@cal.engineer>

apps/frontend/src/plugins/debug-pojo.ts

@@ -0,0 +1,24 @@
+import { defineNuxtPlugin } from '#imports'
+
+export default defineNuxtPlugin((nuxt) => {
+	if (import.meta.server) {
+		nuxt.hooks.hook('app:rendered', (ctx) => {
+			if (ctx.ssrContext?.payload?.data) {
+				const check = (obj: any, path = 'payload') => {
+					if (!obj || typeof obj !== 'object') return
+					if (
+						obj.constructor &&
+						obj.constructor.name !== 'Object' &&
+						obj.constructor.name !== 'Array'
+					) {
+						console.error(`Non-POJO at ${path}:`, obj.constructor.name)
+					}
+					for (const [k, v] of Object.entries(obj)) {
+						check(v, `${path}.${k}`)
+					}
+				}
+				check(ctx.ssrContext.payload.data)
+			}
+		})
+	}
+})