vremya

This package was built with the focus of reducing the complexity to compare dates in JavaScript. When you try to compare dates, like for example:

• Is the date "September 3rd, 2020" today?

It may sound simple, but it's not. Take a look at this example:

// Let's say your local current date/time is:
// "September 3rd, 2020. 01:23 GMT+7"

// Question: Is the date "September 3rd, 2020" today?
// Expected answer: true

const param = new Date('2020-09-03'); // 2020-09-03T00:00:00.000Z
const currentDate = new Date; // 2020-09-02T18:23:00.000Z

console.log(param.getTime() === currentDate.getTime()); // false
console.log(param === currentDate); // false

All of our statements return false because when you create a new Date it will create a date with your local time converted into GMT0. There's a lot of things you have to handle if you want to just compare the dates.

Like most things javascript, the built-in date processing is extremely powerful, but completely non-intuitive. - Joel Coehoorn, stackoverflow answer

Vremya makes your date comparison easier! You just need to import built-in functions from the package and you're good to go.

Usage

Install Vremya

npm install @esmilo/vremya

Use our built-in functions

// Current date/time: "September 3rd, 2020. 01:23 GMT+7"
const { isDate, getCurrentDate } = require('@esmilo/vremya');

// Get current date
console.log(getCurrentDate()); // '2020-09-03'

// Check if date given is today
console.log(isDate('2020-09-03').today()); // true

console.log(isDate(getCurrentDate()).equal('2020-09-03')); // true
console.log(isDate('2020-08-28').equal('2020-08-28')); // true
console.log(isDate('2020-08-28').after('2020-08-20')); // true
console.log(isDate('2021-08-28').before('2020-08-28')); // false

Note: Write your date as strings with ISO 8601 format (yyyy-mm-dd)

Available Methods

• getCurrentDate(): String Get current date as ISO 8601 format (yyyy-mm-dd)
• isDate(date: String): Object Date comparison function, can be chained with:
  • after(dateToCompare: String): Boolean
  • afterOrEqual(dateToCompare: String): Boolean
  • before(dateToCompare: String): Boolean
  • beforeOrEqual(dateToCompare: String): Boolean
  • equal(dateToCompare: String): Boolean
  • today(dateToCompare: String): Boolean