With TypeScript 3.3+ (and maybe since the 2.4 because it’s the version that added support for dynamic imports), you have better ways to solve this isssue, using either: interface Test { date: import(‘moment’).Moment; } or type Moment = import(‘moment’).Moment; interface Test { date: Moment; } with no need to export any interfaces 😉
Moment version 2.13.0 There is a static method .isMoment:
Here’s a function that will do the trick (not using Moment, but just vanilla JavaScript): var getDaysArray = function(year, month) { var monthIndex = month – 1; // 0..11 instead of 1..12 var names = [ ‘sun’, ‘mon’, ‘tue’, ‘wed’, ‘thu’, ‘fri’, ‘sat’ ]; var date = new Date(year, monthIndex, 1); var result = []; … Read more
starting from moment 2.10.5 you can do: moment(/*your date*/).calendar(null,{ lastDay : ‘[Yesterday]’, sameDay : ‘[Today]’, nextDay : ‘[Tomorrow]’, lastWeek : ‘[last] dddd’, nextWeek : ‘dddd’, sameElse : ‘L’ }) see: http://momentjs.com/docs/#/displaying/calendar-time/
this week’s sunday moment().startOf(‘week’) this week’s monday moment().startOf(‘isoweek’) this week’s saturday moment().endOf(‘week’) difference between the current day to sunday moment().diff(moment().startOf(‘week’),’days’) this week’s wedesday moment().startOf(‘week’).add(‘days’, 3)
Moment has a function called isValid. You want to use this function along with the target date format and the strict parsing parameter to true (otherwise your validation might not be consistent) to delegate to the library all the needed checks (like leap years): var dateFormat = “DD/MM/YYYY”; moment(“28/02/2011”, dateFormat, true).isValid(); // return true moment(“29/02/2011”, … Read more
If you are getting a JS based date String then first use the new Date(String) constructor and then pass the Date object to the moment method. Like: var dateString = ‘Thu Jul 15 2016 19:31:44 GMT+0200 (CEST)’; var dateObj = new Date(dateString); var momentObj = moment(dateObj); var momentString = momentObj.format(‘YYYY-MM-DD’); // 2016-07-15 In case dateString … Read more
You can use isSame(), limiting the granularity to a day: var today = moment(1406019110000); var yesterday = moment(1405951867000); if (today.isSame(yesterday, ‘d’)) { // They are on the same day } else { // They are not on the same day }
Here you go! function addWeekdays(date, days) { date = moment(date); // use a clone while (days > 0) { date = date.add(1, ‘days’); // decrease “days” only if it’s a weekday. if (date.isoWeekday() !== 6 && date.isoWeekday() !== 7) { days -= 1; } } return date; } You call it like this var date … Read more
The other question and answer you linked to were correct, and you can also find a very succinct example for how to extend jest in this github comment on react-testing-library. To implement their solution for your code, just change: declare global { namespace jest { interface MomentMatchers extends Matchers<moment.Moment> { toBeSameMoment: (expected: moment.Moment) => CustomMatcherResult; … Read more