KITFORMA · EDITORIAL ANSWER
How do I prevent contradictory loading and error flags in React?
KitForma editorial guide. Separate booleans can allow impossible combinations such as loading and successful at once.
Step-by-step answer
Separate booleans can allow impossible combinations such as loading and successful at once. Model one status:
"idle" | "loading" | "success" | "error", with data or error associated with the relevant state. In TypeScript a discriminated union can enforce that relationship. Verify retries, empty success and failure after earlier success. Decide deliberately whether old data remains visible while another request runs.Sources and verification
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