export declare function matchEndOfSentence(text: string): number;
export declare class SentenceAggregator {
    private buffer;
    private needsLookahead;
    private pendingPeriodConfirm;
    push(tokenText: string): string[];
    flush(): string | null;
    private confirmPendingPeriod;
    private checkSentenceWithLookahead;
    private drainConfirmedAtBufferEnd;
    private emitFirstSentenceIfFound;
}