import { TimeoutError } from '../errors/timeoutErrors';
import type { Node } from '../types';
import { Chapter, type ChapterStrings, Variant } from '../langs';
export declare class PromiseTimeoutError extends TimeoutError {
    explain(): string;
}
export declare const timeoutPromise: <T>(promise: Promise<T>, timeout: number, node?: Node) => Promise<T>;
/**
 * Run the mapping function over the items, filtering out any items that
 * that the mapping function returned `undefined` for
 */
export declare function mapAndFilter<T, U>(items: T[], mapper: (input: T) => U | undefined): U[];
/**
 * Type safe `Object.keys`
 */
export declare function objectKeys<T extends string | number | symbol>(obj: Record<T, any>): T[];
/**
 * Given the chapter value, return the string name of that chapter
 */
export declare function getChapterName(chapter: Chapter): ChapterStrings;
/**
 * Given the variant value, return the string name of that variant
 */
export declare function getVariantName(variant: Variant): "DEFAULT" | "TYPED" | "NATIVE" | "WASM" | "EXPLICIT_CONTROL";