export declare const RELEASE_STATE_SCHEMA_VERSION = 1;
export interface ReleaseState {
    schemaVersion: typeof RELEASE_STATE_SCHEMA_VERSION;
    current?: string;
    previous?: string;
    lastKnownGood?: string;
}
export declare class ReleaseStore {
    readonly botDirectory: string;
    readonly releasesDirectory: string;
    readonly packagesDirectory: string;
    readonly stateFile: string;
    constructor(botDirectory: string);
    ensureDirectories(): void;
    readState(): ReleaseState;
    stateExistsRecovering(): boolean;
    writeState(state: ReleaseState): void;
    releaseDirectory(id: string): string;
    packageDirectory(id: string): string;
    activate(id: string): ReleaseState;
    markLastKnownGood(id: string): ReleaseState;
    restoreLastKnownGood(): string | undefined;
    migrateLegacyLinks(): ReleaseState;
    cleanup(options?: {
        protectedRuntimePaths?: string[];
        keepRecent?: number;
        keepPackages?: number;
    }): void;
    private assertUsableRelease;
    private readLegacyLink;
    releaseIdForRuntimePath(runtimePath: string): string | undefined;
    private assertReleaseId;
}