Function epochFromParts

packages/@internationalized/date/src/conversion.ts:45–60

(
  year: number,
  month: number,
  day: number,
  hour: number,
  minute: number,
  second: number,
  millisecond: number
)

}

function epochFromParts(
  year: number,
  month: number,
  day: number,
  hour: number,
  minute: number,
  second: number,
  millisecond: number
): number {
  // Note: Date.UTC() interprets one and two-digit years as being in the
  // 20th century, so don't use it
  let date = new Date();
  date.setUTCHours(hour, minute, second, millisecond);
  date.setUTCFullYear(year, month - 1, day);
  return date.getTime();
}

export function getTimeZoneOffset(ms: number, timeZone: string): number {
  // Fast path for UTC.