Function invariant

packages/intl-localematcher/abstract/utils.ts:22–30

(
  condition: boolean,
  message: string,
  Err: any = Error
)

 * ```
 */
export function invariant(
  condition: boolean,
  message: string,
  Err: any = Error
): asserts condition {
  if (!condition) {
    throw new Err(message)
  }
}

// This is effectively 2 languages in 2 different regions in the same cluster
const DEFAULT_MATCHING_THRESHOLD = 838