export declare function capitalize(text: string): string;
export declare class AsyncIterator<D> {
    private maxIterations?;
    private awaitingData;
    private awaitingResolver?;
    private iteration;
    private isDone;
    constructor(maxIterations?: number | undefined);
    nextValue(value: D): void;
    finish(value: D): void;
    makeIterator<T>(target: T): T & Iterable<Promise<D | undefined>>;
}
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