Parse not working properly

[sj185205]

import { parse } from 'date-fns';

parse("2020-10-29T06:37:57.045Z", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", new Date());
//Thu Oct 29 2020 06:37:57 GMT+0530

new Date("2020-10-29T06:37:57.045Z");
// Thu Oct 29 2020 12:07:57 GMT+0530

i wanted parse to give same output as new Date() is giving.
am i doing something wrong here ??

[fturmel]

You need to change 'Z' to X so that parse understands the input is UTC and not in your local time zone.

Something to consider, the parseISO function is lighter and understands this format without the need for tokens.

import { parse, parseISO } from "date-fns";

const dateString = "2020-10-29T06:37:57.045Z";

const result1 = parse(dateString, "yyyy-MM-dd'T'HH:mm:ss.SSSX", new Date());
const result2 = new Date(dateString);
const result3 = parseISO(dateString);

console.log(result1); // Thu Oct 29 2020 02:37:57 GMT-0400 (Eastern Daylight Time)
console.log(result2); // Thu Oct 29 2020 02:37:57 GMT-0400 (Eastern Daylight Time)
console.log(result3); // Thu Oct 29 2020 02:37:57 GMT-0400 (Eastern Daylight Time)