wait-for-expect/lib/helpers.js

Wait for expectation to be true, useful for integration and end to end testing

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getSetTimeoutFn = getSetTimeoutFn;
/* eslint-disable import/prefer-default-export */
/* eslint-env jest */
// Used to avoid using Jest's fake timers and Date.now mocks
// See https://github.com/TheBrainFamily/wait-for-expect/issues/4 and
// https://github.com/TheBrainFamily/wait-for-expect/issues/12 for more info
var globalObj = typeof window === "undefined" ? global : window;

// Currently this fn only supports jest timers, but it could support other test runners in the future.
function runWithRealTimers(callback) {
  var usingJestFakeTimers = typeof jest !== "undefined" &&
  // @ts-ignore
  setTimeout.clock != null &&
  // @ts-ignore
  typeof setTimeout.clock.Date === "function";
  if (usingJestFakeTimers) {
    jest.useRealTimers();
  }
  var callbackReturnValue = callback();
  if (usingJestFakeTimers) {
    jest.useFakeTimers();
  }
  return callbackReturnValue;
}
function getSetTimeoutFn() {
  return runWithRealTimers(function () {
    return globalObj.setTimeout;
  });
}