bitmask-model.ts

interface IUser {
 status Status
 ...other user stuff
}

enum Status {
  NO_STATUS = 0,
  ACTIVE = 1, // 2^0
  ADMIN = 2, // 2^1
  EMAIL_VERIFIED = 4, // 2^2 
  PAYMENT_VERIFIED = 8, // 2^3
  TFA_ENABLED = 16, // 2^4
}

// Alternative with Hexadecimal values
enum Status {
  NO_STATUS = 0X0,
  ACTIVE = 0X1, // 2^0
  ADMIN = 0X2, // 2^1
  EMAIL_VERIFIED = 0X4, // 2^2 
  PAYMENT_VERIFIED = 0X8, // 2^3
  TFA_ENABLED = 0X10, // 2^4
}