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useHook() — react Function Reference

Architecture documentation for the useHook() function in error.invalid-write-but-dont-read-ref-in-render.js from the react codebase.

Function javascript TestingUtilities Fixtures

Entity Profile

Dependency Diagram

graph TD
  c847c7e2_7053_a92b_94e7_291b13c1a07a["useHook()"]
  3863ed28_9943_5c61_9377_f890ab2cd572["error.invalid-write-but-dont-read-ref-in-render.js"]
  c847c7e2_7053_a92b_94e7_291b13c1a07a -->|defined in| 3863ed28_9943_5c61_9377_f890ab2cd572
  style c847c7e2_7053_a92b_94e7_291b13c1a07a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.invalid-write-but-dont-read-ref-in-render.js lines 2–8

function useHook({value}) {
  const ref = useRef(null);
  // Writing to a ref in render is against the rules:
  ref.current = value;
  // returning a ref is allowed, so this alone doesn't trigger an error:
  return ref;
}

Domain

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Defined In

Source

Frequently Asked Questions

What does useHook() do?
useHook() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.invalid-write-but-dont-read-ref-in-render.js.
Where is useHook() defined?
useHook() is defined in compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.invalid-write-but-dont-read-ref-in-render.js at line 2.

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