For example:
order.status = "paid" order.invoiceId = null
No crash. No exception. Just wrong state.
How do experienced teams usually detect or guard against this kind of issue in real production systems?
For example:
order.status = "paid" order.invoiceId = null
No crash. No exception. Just wrong state.
How do experienced teams usually detect or guard against this kind of issue in real production systems?
For example, async flows where status updates and data creation are handled in different places.
Curious how teams make these kinds of assumptions explicit in practice.
The gap I’ve seen is that tests usually validate expected scenarios, while some invariants only break after specific sequences of events or over time — especially with async flows and state that evolves across renders.
In practice, we found tests and runtime checks to be complementary: tests verify intent, invariants catch unexpected drift when reality doesn’t match assumptions.
That’s where things get tricky to reason about upfront.
OsrsNeedsf2P•48m ago
vortexshadow•30m ago
Failing early is the key part — especially before invalid state has a chance to propagate through the system.
What I’ve found tricky in React apps is identifying where those invariants should live when the logic spans multiple async updates.
Do you usually enforce them close to state updates, or at higher-level boundaries?