export enum ModeType {
  NI = 'NI',
  I = 'I',
}

export function isModeType(value: any): value is ModeType {
  return value === ModeType.NI || value === ModeType.I
}

export function parseMode(value?: string): ModeType | undefined {
  if (!value) return undefined
  const upper = value.toUpperCase()
  if (upper === ModeType.NI) return ModeType.NI
  if (upper === ModeType.I) return ModeType.I
  return undefined
}