OperationFeedback

export type OperationFeedback =
  | {
      readonly phase: "none" | "activity";
      readonly elapsed: number;
    }
  | {
      readonly phase: "indeterminate" | "status";
      readonly elapsed: number;
      readonly message?: string;
    }
  | {
      readonly phase: "determinate";
      readonly elapsed: number;
      readonly current: number;
      readonly total: number;
      readonly percent: number;
      readonly message?: string;
    };