Function parseEnumFlag

src/commands/test.ts:7645–7655

(
  raw: string | undefined,
  flagName: string,
  accepted: ReadonlyArray<T>,
)

}

function parseEnumFlag<T extends string>(
  raw: string | undefined,
  flagName: string,
  accepted: ReadonlyArray<T>,
): T | undefined {
  if (raw === undefined) return undefined;
  if (!accepted.includes(raw as T)) {
    throw localValidationError(flagName, `must be one of: ${accepted.join(', ')}`, [...accepted]);
  }
  return raw as T;
}

function parseNumericFlag(raw: string | undefined, flagName: string): number | undefined {
  if (raw === undefined) return undefined;