Coding (Platform)

React: Validate state transitions for data grid lifecycle transitions

A production interaction is rendering stale state after a rapid sequence of user actions. The affected area is data grid.

Repair the data grid lifecycle transitions implementation so it accepts only declared state transitions and reports rejected requests.

Evidence

Affected surface: React / data grid.
Observed failure family: validate state transitions.
Scope policy: retained must equal true.

What this task practices

This coding (platform) exercise trains the same sequence expected in an interview: understand the prompt, make assumptions explicit, produce a concrete answer, and explain the decisions behind it. The task is marked easy difficulty. The private workspace adds the tools required by this round, such as recording, code execution, diagrams, evidence panels, or structured notes. It also preserves the attempt so later feedback can be compared with previous work. Evaluation is based on task-specific criteria and the candidate seniority selected in the preparation path. Public pages never expose the reference solution, hidden tests, evaluator instructions, or another candidate’s work.