/** A class to allow to wait for all promises to resolve, where promises can be added asynchronously */
export declare class PromiseAll {
    /**
     * The promise that resolves once all currently added promises resolved
     */
    promise: Promise<void>;
    protected resolve: () => void;
    protected count: number;
    /**
     * Adds a new promise that should be waited on
     * @param promise The promise to be added
     * @returns The passed promise, for inline usage
     */
    add<T>(promise: Promise<T>): Promise<T>;
    /**
     * Resets the promise
     */
    protected reset(): void;
}
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