import type { AnyAsyncFunction, AnyFunctionReturning, ConstructorOf } from "../core.js";
/**
 * Wraps the given asynchronous function in a new function that will ignore any outcome of
 * the context as it resolves.
 *
 * This can be useful when providing asynchonous event handler to `.addEventlistener()`,
 * which only expects synchronous functions.
 * @param context - The asynchronous function to execute.
 * @returns A function returning nothing.
 */
export declare const prepareAsyncContext: (context: AnyAsyncFunction) => (
/**
 * The arguments that our new function was called with.
 */
...args: Array<unknown>) => void;
/**
 * Executes an asynchronous function and resolves with an alternative result
 * in case the function failed.
 * @param executable - The asynchronous function to execute.
 * @param to - The result we want to return when the function errors.
 * @param filter - An {@linkcode !Error} subclass. If defined, only errors of
 * this type will be coalesced.
 * @typeParam TExecutableReturn - The return type of the function.
 * @typeParam TCoalesce - The type of the object to coalesce to.
 * @typeParam TFilter - The type of the error filter.
 * @returns Whatever the function resolved to, or the provided replacement,
 * in case the function failed.
 */
export declare const coalesceOnRejection: <TExecutableReturn, TCoalesce, TFilter extends ConstructorOf<Error>>(executable: AnyFunctionReturning<TExecutableReturn | Promise<TExecutableReturn>>, to: TCoalesce, filter?: TFilter) => Promise<TCoalesce | TExecutableReturn>;
/**
 * Wait a given period before continuing execution.
 * @param duration - How many milliseconds to wait.
 * @returns Nothing
 */
export declare const sleep: (duration: number) => Promise<void>;
/**
 * Executes an asynchronous function and retries the execution if it rejects.
 * @param executable - The asynchronous function to execute.
 * @param retryDelay - The duration to wait after a failed execution.
 * @param retryCount - How often should the execution be retried?
 * @typeParam TExecutableReturn - The return type of the function.
 * @returns Whatever the function resolved to.
 */
export declare const retry: <TExecutableReturn>(executable: AnyFunctionReturning<TExecutableReturn | Promise<TExecutableReturn>>, retryDelay?: number, retryCount?: number) => Promise<TExecutableReturn>;