dateFns.parse for DST dates parses in the incorrect direction

[panzey]

Hey all, when using dateFns.parse to parse dates around the DST time:

dateFns.parse("2022-03-13 02:30:00")

I notice this results in the date being parsed backwards rather than forwards:

Sun Mar 13 2022 01:30:00 GMT-0600 (Central Standard Time)

Is this a bug, or is this intended? I would assume this should default to 3:30 rather than 1:30, as 2:30 is after 1:30 and in spring we skip the 2:00 hour and jump to 3:00.

Thoughts?

Thanks!
- Panzey

[fturmel]

This looks like date-fns v1, which I think is unlikely to get any patches at this point (last release was in December 2018).

parseISO looks fine in v2 if you want to migrate:

// in node.js
process.env.TZ = 'America/Chicago';

import { parseISO } from 'date-fns';

console.log(parseISO('2022-03-13 01:30:00').toString()); // Sun Mar 13 2022 01:30:00 GMT-0600 (Central Standard Time)
console.log(parseISO('2022-03-13 02:30:00').toString()); // Sun Mar 13 2022 03:30:00 GMT-0500 (Central Daylight Time)
console.log(parseISO('2022-03-13 03:30:00').toString()); // Sun Mar 13 2022 03:30:00 GMT-0500 (Central Daylight Time)