toBeAfter.js

export function toBeAfter(date, after) {
  const { printReceived, matcherHint } = this.utils;
  const passMessage =
    matcherHint('.not.toBeAfter', 'received', '') +
    '\n\n' +
    `Expected date to be after ${printReceived(after)} but received:\n` +
    `  ${printReceived(date)}`;

  const failMessage =
    matcherHint('.toBeAfter', 'received', '') +
    '\n\n' +
    `Expected date to be after ${printReceived(after)} but received:\n` +
    `  ${printReceived(date)}`;

  const pass = date > after;

  return { pass, message: () => (pass ? passMessage : failMessage) };
}