import { TimezoneDate } from 'timezone-date.ts'

const d = TimezoneDate.fromDate(new Date('2020-04-21T10:00:00.000Z'))

d.timezone = 0
d.getHours() // 10

d.timezone = +8
d.getHours() // 18

d.getTimezoneOffset() // -480 (in mintes, same format as Native Date)

d.setHours(9)
d.timezone++
d.getHours() // 10
d.toLocaleTimeString() // '10:00:00 AM'

let date = new TimezoneDate()
date.timezone = +8
date.setFullYear(2020, 11 - 1, 28)
date.setHours(9, 2, 38)
console.log(date.toString()) // Sat Nov 28 2020 09:02:38 GMT+0800 (Hong Kong Standard Time)

import { TimezoneDate } from 'timezone-date.ts'

/* custom timezone */
new TimezoneDate(Date.now(), {timezone: +8})

/* default timezone (in the environment) */
new TimezoneDate()                 // current time
new TimezoneDate(Date.now())
TimezoneDate.fromTime(Date.now())
TimezoneDate.fromDate(new Date())
TimezoneDate.from(Date.now())      // from Date or timestamp