export type MemoryActivity = "idle" | "searching" | "injecting" | "saving" | "flushing" | "error" | "logged-out" | "incognito";
export declare function isActiveActivity(activity: MemoryActivity): boolean;
export interface MemorySnapshot {
    activity: MemoryActivity;
    username: string | null;
    detail: string | null;
    lastError: string | null;
    hidden: boolean;
}
type Listener = () => void;
export declare function getMemorySnapshot(): MemorySnapshot;
export declare function getSpinnerFrame(): string;
export declare function subscribe(listener: Listener): () => void;
export declare function stopSpinnerTimer(): void;
export declare function setActivity(activity: MemoryActivity, detail?: string | null): void;
export declare function setError(message: string): void;
export declare function setUsername(username: string | null): void;
export declare function setHidden(hidden: boolean): void;
export declare function clearError(): void;
export {};
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