type Theme = 'light' | 'dark';
export declare function setMermaidWorkerClientDebug(enabled: boolean): void;
export declare function setMermaidWorkerMaxConcurrency(n: number): void;
export declare function getMermaidWorkerLoad(): {
    inFlight: number;
    max: number;
};
export declare const MERMAID_WORKER_BUSY_CODE = "WORKER_BUSY";
export declare function setMermaidWorker(w: Worker): void;
export declare function clearMermaidWorker(): void;
export declare function canParseOffthread(code: string, theme: Theme, timeout?: number): Promise<boolean>;
export declare function findPrefixOffthread(code: string, theme: Theme, timeout?: number): Promise<string>;
export declare function terminateWorker(): void;
export {};