jsdom-testing-mocks/src/mocks/web-animations-api/AnimationTimeline.ts

A set of tools for emulating browser behavior in jsdom environment

class MockedAnimationTimeline implements AnimationTimeline {
  constructor() {
    if (this.constructor === MockedAnimationTimeline) {
      throw new TypeError('Illegal constructor');
    }
  }

  get currentTime() {
    return performance.now();
  }
}

function mockAnimationTimeline() {
  if (typeof AnimationTimeline === 'undefined') {
    Object.defineProperty(window, 'AnimationTimeline', {
      writable: true,
      configurable: true,
      value: MockedAnimationTimeline,
    });
  }
}

export { MockedAnimationTimeline, mockAnimationTimeline };