export type ParticipantId = number;

export interface Participant {
  id: ParticipantId;
  name: string;
}

export interface Expense {
  id: number;
  amountCents: number;
  payerId: ParticipantId;
  participantIds: ParticipantId[];
}

export interface Settlement {
  fromId: ParticipantId;
  toId: ParticipantId;
  amountCents: number;
}