Function deepMergeOptions

packages/intl/message.ts:41–53

(
  opts1: Record<string, Intl.DateTimeFormatOptions>,
  opts2: Record<string, Intl.DateTimeFormatOptions>
)

}

function deepMergeOptions(
  opts1: Record<string, Intl.DateTimeFormatOptions>,
  opts2: Record<string, Intl.DateTimeFormatOptions>
): Record<string, Intl.DateTimeFormatOptions> {
  const keys = Object.keys({...opts1, ...opts2})
  return keys.reduce((all: Record<string, Intl.DateTimeFormatOptions>, k) => {
    all[k] = {
      ...opts1[k],
      ...opts2[k],
    }
    return all
  }, {})
}

function deepMergeFormatsAndSetTimeZone(
  f1: CustomFormats,