export interface ArkmeOwnedCordisTarget {
    kind: 'cordis';
    sourceKey: string;
    agentId: string;
    pluginId: string;
    packageId: string;
}
export interface ArkmeOwnedProfileTarget {
    kind: 'profile-directory' | 'profile-tarball' | 'profile-installed';
    sourceKey: string;
    packageName: string;
    sourcePath: string;
    specDigest: string;
}
export type ArkmeOwnedExtensionTarget = ArkmeOwnedCordisTarget | ArkmeOwnedProfileTarget;
/** Short-lived account-bound references for browser and SDK extension actions. */
export declare class ArkmeOwnedExtensionRefs {
    private readonly options;
    private readonly entries;
    constructor(options?: {
        ttlMillis?: number;
        maxEntries?: number;
        now?: () => number;
    });
    issue(userId: number, target: ArkmeOwnedExtensionTarget): string;
    resolve(userId: number, ref: string): ArkmeOwnedExtensionTarget;
    clearUser(userId: number): void;
    private prune;
    private now;
}
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