Class HDateTime

Compares two date times.

Value equality check.

Return the full IANA timezone name or an empty string if it can't be found.

Dump the value to the local console output.

Compares the value's kind.

Returns true if the haystack filter matches the value.

Encodes to an encoded zinc value that can be used in a haystack filter string.

A dict isn't supported in filter so throw an error.

Encodes to an encoding zinc value.

Return the full IANA timezone name or an empty string if it can't be found.

The timezone name can be a full existing timezone or an alias.

Since a vanilla JavaScript environment doesn't have support for querying the IANA database, a callback function needs to be passed in to query the local database implementation.

Here's an example that uses Luxon...

import { DateTime } from 'luxon'
...
const isValidTimeZone = (timezone: string): boolean =>
  !!DateTime.now().setZone(timezone).isValid

const tz = getIANATimeZone('New_York', isValidTimeZone) // Returns 'America/New_York'.
...
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Here's an example that uses Moment with timezones...

import * as moment from 'moment-timezone'
...
const isValidTimeZone = (timezone: string): boolean =>
  !!moment.tz.zone(timezone)

const tz = getIANATimeZone('New_York', isValidTimeZone) // Returns 'America/New_York'.
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See

defaultIsValidTimeZone

Link

IANA timezone database

Link

Fantom's DateTime with alias explanation

Factory method for a haystack date time.