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UNSAFE_componentWillUpdate() — react Function Reference

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

Function javascript BabelCompiler Validation calls 1 called by 2

Entity Profile

Dependency Diagram

graph TD
  7b2244ef_88bf_d5db_595d_7b659bdfac8d["UNSAFE_componentWillUpdate()"]
  8ceb8fbf_0e04_1346_f837_ae8ff1342c31["Child"]
  7b2244ef_88bf_d5db_595d_7b659bdfac8d -->|defined in| 8ceb8fbf_0e04_1346_f837_ae8ff1342c31
  1b215701_3410_900d_88b9_adb7322d0738["UNSAFE_componentWillUpdate()"]
  1b215701_3410_900d_88b9_adb7322d0738 -->|calls| 7b2244ef_88bf_d5db_595d_7b659bdfac8d
  7bdcf33b_5a8c_7b2e_b87b_dffc9ca7dc41["UNSAFE_componentWillUpdate()"]
  7bdcf33b_5a8c_7b2e_b87b_dffc9ca7dc41 -->|calls| 7b2244ef_88bf_d5db_595d_7b659bdfac8d
  1b215701_3410_900d_88b9_adb7322d0738["UNSAFE_componentWillUpdate()"]
  7b2244ef_88bf_d5db_595d_7b659bdfac8d -->|calls| 1b215701_3410_900d_88b9_adb7322d0738
  style 7b2244ef_88bf_d5db_595d_7b659bdfac8d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-dom/src/__tests__/ReactLegacyUpdates-test.js lines 1029–1034

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

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Frequently Asked Questions

What does UNSAFE_componentWillUpdate() do?
UNSAFE_componentWillUpdate() is a function in the react codebase, defined in packages/react-dom/src/__tests__/ReactLegacyUpdates-test.js.
Where is UNSAFE_componentWillUpdate() defined?
UNSAFE_componentWillUpdate() is defined in packages/react-dom/src/__tests__/ReactLegacyUpdates-test.js at line 1029.
What does UNSAFE_componentWillUpdate() call?
UNSAFE_componentWillUpdate() calls 1 function(s): UNSAFE_componentWillUpdate.
What calls UNSAFE_componentWillUpdate()?
UNSAFE_componentWillUpdate() is called by 2 function(s): UNSAFE_componentWillUpdate, UNSAFE_componentWillUpdate.

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