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UNSAFE_componentWillUpdate() — react Function Reference

Architecture documentation for the UNSAFE_componentWillUpdate() function in ReactUpdates-test.js from the react codebase.

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Entity Profile

Dependency Diagram

graph TD
  252b8e9a_b744_88a3_ea35_67dded3cfb18["UNSAFE_componentWillUpdate()"]
  cfb18572_690e_f294_0181_cdda4cf8069e["Child"]
  252b8e9a_b744_88a3_ea35_67dded3cfb18 -->|defined in| cfb18572_690e_f294_0181_cdda4cf8069e
  style 252b8e9a_b744_88a3_ea35_67dded3cfb18 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

packages/react-dom/src/__tests__/ReactUpdates-test.js lines 1196–1201

      UNSAFE_componentWillUpdate() {
        if (!once) {
          once = true;
          this.setState({updated: true});
        }
      }

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Defined In

Source

Frequently Asked Questions

What does UNSAFE_componentWillUpdate() do?
UNSAFE_componentWillUpdate() is a function in the react codebase, defined in packages/react-dom/src/__tests__/ReactUpdates-test.js.
Where is UNSAFE_componentWillUpdate() defined?
UNSAFE_componentWillUpdate() is defined in packages/react-dom/src/__tests__/ReactUpdates-test.js at line 1196.

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