UNSAFE_componentWillMount() — react Function Reference

Architecture documentation for the UNSAFE_componentWillMount() function in ReactCompositeComponentState-test.js from the react codebase.

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BabelCompiler→ Validation→ UNSAFE_componentWillMount() — react Function Reference

Dependency Diagram

graph TD
  d6337c99_334a_c412_d358_040ed18018f1["UNSAFE_componentWillMount()"]
  6a41ba62_6b34_6d3b_c13f_94f3b31fbc8c["Test"]
  d6337c99_334a_c412_d358_040ed18018f1 -->|defined in| 6a41ba62_6b34_6d3b_c13f_94f3b31fbc8c
  style d6337c99_334a_c412_d358_040ed18018f1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-dom/src/__tests__/ReactCompositeComponentState-test.js lines 500–510

      UNSAFE_componentWillMount() {
        this.setState({step: 2}, () => {
          // Tests that earlier setState callbacks are not dropped
          Scheduler.log(
            `callback -- step: ${this.state.step}, extra: ${!!this.state
              .extra}`,
          );
        });
        // Treat like replaceState
        this.state = {step: 3};
      }