Am trying to format date with such an example 2021-09-20T12:12:36.166584+02:00 with date-fns library but it doesn't work, what's the right approach ?
Below is my code :
import { format } from 'date-fns'
format(date, 'DD.MM.YYYY')
You have to parse your ISO string before you can format it, and use lowercase dd and yyyy:
import { format, parseISO } from "date-fns";
const dateFormatted = format(parseISO(date), "dd.MM.yyyy");
We definitely need more information on what the problem is.
But I guess you want to have a day of the month to be formatted so you should put dd instead of DD.
DD = 01, 02, ..., 365, 366
dd = 01, 02, ..., 31
And yyyy instead of YYYY.
And your input param date should be a type of Date:
format(new Date('2021-09-20T12:12:36.166584+02:00'), 'dd.MM.yyyy')
Everything can be found in documentation (https://date-fns.org/v2.24.0/docs/format)