16 - re-render

[marks0351]

components/very-slow-component.jsx

import React from "react";

const wait = (ms) => {
  const start = Date.now();
  let now = start;

  while (now - start < ms) now = Date.now();
};

export const VerySlowComponent = React.memo(() => {
  wait(500);
  return null;
});

export const AnotherVerySlowComponent = React.memo(() => {
  wait(500);
  return null;
});