typed-utilities/src/__tests__/lazyMemo.test.ts

Strongly typed general purpose utilities

import { lazyMemo } from "..";

test(`lazyMemo`, () => {
  let count = 0;
  const m = lazyMemo(() => {
    return ++count;
  });
  expect(count).toEqual(0);
  expect(m()).toEqual(1);
  expect(m()).toEqual(1);
});