TimezoneManager.parseTimezone() references non-existent database.abbreviations

[thedhanawada]

Bug Description

TimezoneManager.parseTimezone() at lines 368-373 references this.database.abbreviations, but the TimezoneDatabase class uses this.aliases (line 427 in TimezoneDatabase.js). The property this.database.abbreviations is always undefined, so the abbreviation lookup silently fails and falls through to the offset parser.

Impact

• Timezone abbreviations like "EST", "PST", "CET" are never resolved to their IANA equivalents
• The fallback offset parser can't handle abbreviations, so they fail silently
• Users passing common timezone abbreviations get incorrect behavior with no error

Code Location

// TimezoneManager.js:368-373
if (
  this.database.abbreviations &&  // ALWAYS undefined
  Object.prototype.hasOwnProperty.call(this.database.abbreviations, upperTz)
) {
  return this.database.abbreviations[upperTz];
}

Fix

Change this.database.abbreviations to this.database.aliases:

if (
  this.database.aliases &&
  Object.prototype.hasOwnProperty.call(this.database.aliases, upperTz)
) {
  return this.database.aliases[upperTz];
}

Files

• core/timezone/TimezoneManager.js:368-373 (bug)
• core/timezone/TimezoneDatabase.js:427 (correct property name)