const enum Flags {
  InitCalled = 1 << 0,
  NavTimingNotSupported = 1 << 1,
  UserTimingNotSupported = 1 << 2,
  VisibilityStateNotVisible = 1 << 3,
  BeaconSentFromUnloadHandler = 1 << 4,
  BeaconSentAfterTimeout = 1 << 5,
  PageLabelFromDocumentTitle = 1 << 6,
  PageLabelFromLabelProp = 1 << 7,
  PageLabelFromGlobalVariable = 1 << 8,
  PageLabelFromUrlPattern = 1 << 9,
  PageWasPrerendered = 1 << 10,
  PageWasBfCacheRestored = 1 << 11,
  BeaconBlockedByCsp = 1 << 12,
}

export function addFlag(flags: number, flag: number): number {
  return flags | flag;
}

export function removeFlag(flags: number, flag: number): number {
  return flags & ~flag;
}

export function hasFlag(flags: number, flag: number): boolean {
  return (flags & flag) === flag;
}

export default Flags;