Tech Screening

TypeScript API contracts

A backend adds a new union variant and the UI silently renders the wrong state. How would you make the contract exhaustive?

What this task practices

TypeScript API contracts is a tech screening interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as hard difficulty. It focuses on Validation, Tradeoffs, Technical Reasoning. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.