react Architecture Docs
Home / Function/ mockIntersectionObserver() — react Function Reference

mockIntersectionObserver() — react Function Reference

Architecture documentation for the mockIntersectionObserver() function in IntersectionMocks.js from the react codebase.

Function javascript BabelCompiler Validation calls 4

Entity Profile

Dependency Diagram

graph TD
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa["mockIntersectionObserver()"]
  401ac3c1_db64_239a_36cd_82c9b882e0ea["IntersectionMocks.js"]
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa -->|defined in| 401ac3c1_db64_239a_36cd_82c9b882e0ea
  aafefa60_6c30_404f_534c_8b29ca93ac1d["constructor()"]
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa -->|calls| aafefa60_6c30_404f_534c_8b29ca93ac1d
  1446fe39_395f_601a_03d8_0feca29e71fe["disconnect()"]
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa -->|calls| 1446fe39_395f_601a_03d8_0feca29e71fe
  e6a27e34_3a04_c298_f963_3b62d507d530["observe()"]
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa -->|calls| e6a27e34_3a04_c298_f963_3b62d507d530
  3fc30c92_84d5_0ea3_bb64_354cf34d119d["unobserve()"]
  cc9b57c8_5696_c1fc_9b1f_69c14b549baa -->|calls| 3fc30c92_84d5_0ea3_bb64_354cf34d119d
  style cc9b57c8_5696_c1fc_9b1f_69c14b549baa fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-dom/src/__tests__/utils/IntersectionMocks.js lines 16–45

export function mockIntersectionObserver() {
  intersectionObserverMock.callback = null;
  intersectionObserverMock.observedTargets = [];

  class IntersectionObserver {
    constructor() {
      intersectionObserverMock.callback = arguments[0];
    }

    disconnect() {
      intersectionObserverMock.callback = null;
      intersectionObserverMock.observedTargets.splice(0);
    }

    observe(target) {
      intersectionObserverMock.observedTargets.push(target);
    }

    unobserve(target) {
      const index = intersectionObserverMock.observedTargets.indexOf(target);
      if (index >= 0) {
        intersectionObserverMock.observedTargets.splice(index, 1);
      }
    }
  }

  window.IntersectionObserver = IntersectionObserver;

  return intersectionObserverMock;
}

Domain

Subdomains

Defined In

Calls

Source

Frequently Asked Questions

What does mockIntersectionObserver() do?
mockIntersectionObserver() is a function in the react codebase, defined in packages/react-dom/src/__tests__/utils/IntersectionMocks.js.
Where is mockIntersectionObserver() defined?
mockIntersectionObserver() is defined in packages/react-dom/src/__tests__/utils/IntersectionMocks.js at line 16.
What does mockIntersectionObserver() call?
mockIntersectionObserver() calls 4 function(s): constructor, disconnect, observe, unobserve.

Analyze Your Own Codebase

Get architecture documentation, dependency graphs, and domain analysis for your codebase in minutes.

Try Supermodel Free