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Ever built a function that should accept one of several options — but not more, not less? In 2025, TypeScript makes it cleaner than ever with a pattern called RequireOnlyOne. One small generic gives you: ✅ Precise API contracts ❌ No runtime ambiguity
Ever built a function that should accept one of several options — but not more, not less?
In 2025, TypeScript makes it cleaner than ever with a pattern called RequireOnlyOne. One small generic gives you:
✅ Precise API contracts
❌ No runtime ambiguity
