export type ReceiptState = "absent" | "present" | "missing" | "unknown";
export type ExecutionState = "accepted" | "in_flight" | "terminal_ok" | "failed" | "cancelled" | "unknown";
export interface ReceiptSource {
    text?: string | null;
    artifactPath?: string | null;
}
export interface TerminalReceiptInput {
    execution: "accepted" | "in_flight" | "completed" | "failed" | "cancelled" | "unknown";
    reportable: boolean;
}
export interface TerminalReceiptState {
    execution: ExecutionState;
    receipt: ReceiptState;
}
export declare function reportableReceipt({ text, artifactPath }: ReceiptSource): boolean;
export declare function receiptStateForTerminal(source: ReceiptSource): Extract<ReceiptState, "present" | "missing">;
export declare function reduceTerminalReceiptState(input: TerminalReceiptInput): TerminalReceiptState;