/**
 * Returns promise that will be rejected with Timeout error if not resolved in time
 * @param ms timeout value in milliseconds. if <= 0, will be immediatly rejected
 * @param promise
 * @param errorFactory function to create the error when timeout occurs
 */
export declare function promiseTimeout<T>(ms: number, promise: Promise<T>, errorFactory?: (args: {
    timeout: number;
    startTime: Date;
}) => Error): Promise<T>;