ErrorAndWarningOnUpdate() — react Function Reference

Architecture documentation for the ErrorAndWarningOnUpdate() function in index.js from the react codebase.

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Entity Profile

BabelCompiler→ Validation→ ErrorAndWarningOnUpdate() — react Function Reference

Dependency Diagram

graph TD
  6dddc510_3f36_b5b7_fa13_fec2b1dc2683["ErrorAndWarningOnUpdate()"]
  a0507bb6_7cf5_071e_db51_f9f50de2969a["index.js"]
  6dddc510_3f36_b5b7_fa13_fec2b1dc2683 -->|defined in| a0507bb6_7cf5_071e_db51_f9f50de2969a
  style 6dddc510_3f36_b5b7_fa13_fec2b1dc2683 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-devtools-shell/src/app/InlineWarnings/index.js lines 97–108

function ErrorAndWarningOnUpdate({children = null}) {
  const didMountRef = useRef(false);
  useEffect(() => {
    if (didMountRef.current) {
      console.warn('This warning fires on every update');
      console.error('This error fires on every update');
    } else {
      didMountRef.current = true;
    }
  });
  return children;
}