import { FullValuSearchConfig } from "../config";
import { AddressBarListener } from "../redux/search-engine";
/**
 * CSS helper for defining element sizes.
 * If there is no env variable VS_REM_DIVIDER, returns `${value}px`
 * If VS_REM_DIVIDER is set returns ${value / process.env.VS_REM_DIVIDER}rem
 *
 * In CDN projects set VS_REM_DIVIDER in customer/webpack.config.js
 * @param value
 */
export declare function u(value: number | string): string;
declare const featureFlags: {
    vsExperimentalIdleThrottle: string;
    vsDebug: string;
    vsStaging: string;
    vsLogResponseTimes: string;
};
export declare function featureFlag(flag: keyof typeof featureFlags): boolean;
export declare let debug: (msg: string, ...args: any[]) => void;
export declare function requestIdleCallback(cb: () => void): void;
/**
 * Fill missing values from the partial config with the default values
 */
export declare function defaults<PartialConfig extends {}, Defaults extends {}>(partialConfig: PartialConfig, defaultValues: Defaults): PartialConfig & Defaults;
/**
 * Typed and simplified version of https://www.npmjs.com/package/debounce
 */
export declare function debounce<T extends (...args: any[]) => any>(func: T, wait: number, immediate?: boolean): {
    (this: any, ..._args: Parameters<T>): ReturnType<T> | undefined;
    cancel(): void;
};
/**
 * From SO, must be perfect?
 * https://stackoverflow.com/a/25456134/153718
 */
export declare function isDeepEqual(x: any, y: any): boolean;
/**
 * This might be unnecessary
 * @param options
 */
export declare function partialConfigIsEqual(options: {
    partial: Partial<FullValuSearchConfig>;
    config: FullValuSearchConfig;
}): boolean;
export declare function useInstanceId(): string;
export declare function useSetSearchTerms(): (terms: string) => void;
export declare function useParseSearchTerms(): (searchParams: URLSearchParams) => string;
export declare function useIsSearchActive(): (searchParams: URLSearchParams) => boolean;
export declare function useGetCurrentSearchTermsFromWindow(): () => string;
export declare function useGetIsSearchActiveFromWindow(): () => boolean;
export declare function useSetGroupIdOnWindow(): (id: string) => void;
export declare function useGetGroupLinkFromWindow(): (params: {
    id: string;
    terms: string;
}) => string;
export declare function useGetGrouppedResultsLinkFromWindow(): () => string;
export declare function useVsOpenOnWindow(): (searchTerms: string) => void;
export declare function useVsCloseOnWindow(): () => void;
export declare function useRemoveVSQueryParams(): (params: URLSearchParams) => URLSearchParams;
export declare function useClearVSQueryParamsOnWindow(): () => void;
export declare function useGetInnerLinkFromWindow(): (params?: {
    searchTerms?: string | undefined;
    groupId?: string | undefined;
} | undefined) => string;
export declare function usePreviousValue<T>(value: T): T;
export declare function createAddressBarListener(instanceId: string): AddressBarListener;
/**
 * Logs the given deprecation message only once
 */
export declare function deprecateLog(msg: string, ...rest: any[]): void;
export declare function deprecate<Fn extends (...args: any[]) => any>(old: string, next: string, fn: Fn): Fn;
export declare function deprecateSlot<T extends keyof FullValuSearchConfig["slots"]>(old: T, next: T, slots: FullValuSearchConfig["slots"]): void;
/**
 * @param ob Remove undefied keys from object. Just makes things cleaner for
 * tests
 */
export declare function cleanUndefined<T extends {}>(ob: T): T;
/**
 * Asserts that given object is not null or undefined
 */
export declare function assertNonNullable<T>(ob: T, assertionMessage: string): asserts ob is NonNullable<T>;
export {};