import { Scanner, Progress, ScannerOptions } from '../scanner.js';
import { PriorityBlockedQueue } from '../priorityblockedqueue.js';
import { Event } from '../../event.js';
export declare class Race implements Scanner {
    scanners: Scanner[];
    /** Events currently being processed by this scanner. */
    eventQueue: PriorityBlockedQueue;
    /** Child scanners and their associated readers. */
    children: {
        [key: number]: {
            blocked: boolean;
            reader: Generator<{
                event: Event;
                blocked: boolean;
            }>;
            scanner: Scanner;
        };
    };
    /** Most recent state emitted by a child scanner. */
    currentState: string;
    id: string;
    constructor(scanners?: Scanner[], options?: ScannerOptions);
    get complete(): boolean;
    get lastclosed(): number;
    get lastreceived(): number;
    private computeOutputProgress;
    private validateInput;
    private scannerIndices;
    private resetAt;
    reindex(newIndex: number): void;
    shift(event: Event): Progress;
}
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