Most frontend devs trust APIs too much… 👀 Here’s something barely anyone talks about 👇 👉 Your UI should never trust backend data blindly. Yeah I said it. We assume backend = source of truth But in reality: ❌ APIs can send null ❌ Fields can disappear ❌ Types can change silently ❌ Partial failures happen all the time And guess what? 💥 Your UI crashes… not the backend. 🔥 Real senior-level frontend thinking: Instead of: user.name.toUpperCase() Do this: user?.name?.toUpperCase() ?? "Unknown" But it goes deeper 👇 💡 Validate API responses at the boundary Use tools like: Zod Yup Custom type guards Turn this: type User = { name: string; } Into runtime safety: const UserSchema = z.object({ name: z.string().default("Unknown"), }); 🚀 Great frontend engineers don’t just build UI They build resilient systems Because real-world data is messy. #frontend #webdev #javascript #react #softwareengineering
You should trust api because it should be documented. So each api has a contract and if contract is broken then you should create a new task with a bug to fix
Same goes for backend too. As a Backend Developer don't trust frontend or your client side data it couldn't be third party api caller who can send a harmful data which could make down your complete server or you may loose a complete data of your company.