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Spy Class — react Architecture

Architecture documentation for the Spy class in ReactCompositeComponent-test.js from the react codebase.

Class javascript

Entity Profile

Dependency Diagram

graph TD
  5fc6570e_7624_184f_8d57_425a724f8ac1["Spy"]
  ed651fa3_2f28_cb4d_458b_e3b4f60f6590["ReactCompositeComponent-test.js"]
  5fc6570e_7624_184f_8d57_425a724f8ac1 -->|defined in| ed651fa3_2f28_cb4d_458b_e3b4f60f6590
  8b4f2f88_0427_3d83_f960_78af9ee0b8f1["UNSAFE_componentWillMount()"]
  5fc6570e_7624_184f_8d57_425a724f8ac1 -->|method| 8b4f2f88_0427_3d83_f960_78af9ee0b8f1
  3ad286eb_8669_1f8b_5082_be086fc47bab["render()"]
  5fc6570e_7624_184f_8d57_425a724f8ac1 -->|method| 3ad286eb_8669_1f8b_5082_be086fc47bab
  f79c5f2e_b9d7_e265_0cc7_752f8842fac4["componentDidMount()"]
  5fc6570e_7624_184f_8d57_425a724f8ac1 -->|method| f79c5f2e_b9d7_e265_0cc7_752f8842fac4
  a61dddad_a76f_571d_9e9c_1d23981466d0["componentWillUnmount()"]
  5fc6570e_7624_184f_8d57_425a724f8ac1 -->|method| a61dddad_a76f_571d_9e9c_1d23981466d0

Relationship Graph

Source Code

packages/react-dom/src/__tests__/ReactCompositeComponent-test.js lines 897–911

    class Spy extends React.Component {
      UNSAFE_componentWillMount() {
        Scheduler.log(this.props.name + ' componentWillMount');
      }
      render() {
        Scheduler.log(this.props.name + ' render');
        return <div />;
      }
      componentDidMount() {
        Scheduler.log(this.props.name + ' componentDidMount');
      }
      componentWillUnmount() {
        Scheduler.log(this.props.name + ' componentWillUnmount');
      }
    }

Defined In

Source

Frequently Asked Questions

What is the Spy class?
Spy is a class in the react codebase, defined in packages/react-dom/src/__tests__/ReactCompositeComponent-test.js.
Where is Spy defined?
Spy is defined in packages/react-dom/src/__tests__/ReactCompositeComponent-test.js at line 897.

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