Will It Vibe?setState called during render
Part of Code Quality & Syntax, which counts for 20% of the overall score. When this check fires it deducts 8 points from that category, once per scan, no matter how many places it turns up.
What it detects
Calling setState at statement level inside a render() method schedules an update while rendering, which React rejects with a "Cannot update during an existing state transition" error or drives an infinite re-render loop. Heuristic: only flags setState written as a statement in the render body, not inside a nested handler.
Why it matters
Calling setState as a statement inside render() updates state while React is in the middle of rendering, which React rejects with a "Cannot update during an existing state transition" error, or drives an infinite render-set-render loop. render must be a pure function of props and state. This is a heuristic that only flags setState written directly in the render body, not inside a handler defined there.
How to fix it
Move the setState out of render. Derived values that depend on props or state can be computed inline during render without storing them; genuine state transitions belong in an event handler, componentDidMount, or componentDidUpdate with a guard so it does not loop.
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