JS - Testing code that uses an IntersectionObserver

Question

I have a (rather poorly written) javascript component in my application that handles infinite scroll pagination, and i\'m trying to rewrite it to use the IntersectionO

Answer 1

I had this problem with a setup based on vue-cli. I ended up using a mix of the answers I saw above:

   const mockIntersectionObserver = class {
    constructor() {}
    observe() {}
    unobserve() {}
    disconnect() {}
  };

  beforeEach(() => {
    window.IntersectionObserver = mockIntersectionObserver;
  });