import { type CliError } from "../../_utils/cli-error.js";
import { type Result } from "../../_utils/result.js";
type EvidenceItem = {
    kind?: "observation" | "message";
    id?: string;
    reference?: string;
};
type Impact = {
    changed: EvidenceItem[];
    unchanged: EvidenceItem[];
    cascadedObservations: EvidenceItem[];
};
export declare const mutateEvidence: (input: {
    action: "forget" | "restore";
    references: string[];
}) => Promise<Result<Impact, CliError>>;
export {};