x/rambda/source/comparator.spec.js
12345678import { comparator } from './comparator.js'test('happy', () => { expect([ 3, 1, 8, 1, 2, 5 ].sort(comparator((a, b) => a < b))).toEqual([ 1, 1, 2, 3, 5, 8, ])})