Timezones Settings Using UTC Offsets Cause EDTR to Crash

[tn3rb]

plz see: https://github.com/eventespresso/cafe/issues/1272

steps to reproduce

• go to WP General Settins admin page
• set Timezone to one of the UTC values that uses an offset:
  • UTC-12
  • UTC-11:30
  • UTC-11
  • UTC-10:30
  • UTC-10
  • UTC-9:30
  • UTC-9
  • UTC-8:30
  • UTC-8
  • UTC-7:30
  • UTC-7
  • UTC-6:30
  • UTC-6
  • UTC-5:30
  • UTC-5
  • UTC-4:30
  • UTC-4
  • UTC-3:30
  • UTC-3
  • UTC-2:30
  • UTC-2
  • UTC-1:30
  • UTC-1
  • UTC-0:30
  • UTC+0
  • UTC+0:30
  • UTC+1
  • UTC+1:30
  • UTC+2
  • UTC+2:30
  • UTC+3
  • UTC+3:30
  • UTC+4
  • UTC+4:30
  • UTC+5
  • UTC+5:30
  • UTC+5:45
  • UTC+6
  • UTC+6:30
  • UTC+7
  • UTC+7:30
  • UTC+8
  • UTC+8:30
  • UTC+8:45
  • UTC+9
  • UTC+9:30
  • UTC+10
  • UTC+10:30
  • UTC+11
  • UTC+11:30
  • UTC+12
  • UTC+12:45
  • UTC+13
  • UTC+13:45
  • UTC+14
• save settings
• go to event editor and add/edit an event
• click on the calendar icon in the sidebar of any date or ticket card

• the EDTR will crash with following error:

  react-dom.min.js?ver=18.2.0:10 RangeError: Invalid time zone specified:
  at Date.toLocaleString (<anonymous>)
      at useTimeZoneTime.ts:55:22
      at u (TimezoneTimeInfo.tsx:15:14)
      at wt (react-dom.min.js?ver=18.2.0:10:47637)
      at js (react-dom.min.js?ver=18.2.0:10:120584)
      at wl (react-dom.min.js?ver=18.2.0:10:88659)
      at bl (react-dom.min.js?ver=18.2.0:10:88587)
      at yl (react-dom.min.js?ver=18.2.0:10:88450)
      at fl (react-dom.min.js?ver=18.2.0:10:85607)
      at Nn (react-dom.min.js?ver=18.2.0:10:32474)
  
  Uncaught RangeError: Invalid time zone specified: 
      at Date.toLocaleString (<anonymous>)
      at useTimeZoneTime.ts:55:22
      at u (TimezoneTimeInfo.tsx:15:14)
      at wt (react-dom.min.js?ver=18.2.0:10:47637)
      at js (react-dom.min.js?ver=18.2.0:10:120584)
      at wl (react-dom.min.js?ver=18.2.0:10:88659)
      at bl (react-dom.min.js?ver=18.2.0:10:88587)
      at yl (react-dom.min.js?ver=18.2.0:10:88450)
      at fl (react-dom.min.js?ver=18.2.0:10:85607)
      at Nn (react-dom.min.js?ver=18.2.0:10:32474)

[alexkuc]

Issue replicated on my end, investigating