import { PgsRendererImpl } from "./pgsRendererImpl";
import { PgsRendererOptions } from "./pgsRendererOptions";
/**
 * The base implementation for a pgs renderer in side a worker.
 */
export declare abstract class PgsRendererInWorker extends PgsRendererImpl {
    protected constructor(options: PgsRendererOptions);
    loadFromUrl(url: string): Promise<void>;
    loadFromBuffer(buffer: ArrayBuffer): Promise<void>;
    /**
     * The background worker.
     */
    protected readonly worker: Worker;
    /**
     * The loads the worker still has to answer, in the order it answers them.
     */
    private readonly pendingLoads;
    /**
     * Handles messages from the worker.
     * @param e The event message.
     */
    private readonly $onWorkerMessage;
    /**
     * Handles messages from the worker.
     * @param e The event message.
     */
    protected onWorkerMessage(e: MessageEvent): void;
    /**
     * Disposes the renderer and terminates the worker.
     */
    dispose(): void;
}