cypress-fail-on-timeout.js

const failOnTimeout = (timeout = 10000) => {
  return setTimeout(() => {
    Cypress.runner.stop();
    throw new Error("Timeout");
  }, timeout);
};


describe("All tests", function () {
  before(failOnTimeout);
  it('', () => {
    // ....
  });
}

// an alternative approach - monkey-patch "describe"
const _describe = describe;
describe = function (title, fn) {
  failOnTimeout();
  _describe.apply(this, [title, fn]);
};