import { SignClientTypes, RelayerClientMetadata, EngineTypes, RelayerTypes } from "@walletconnect/types";
import { ErrorResponse } from "@walletconnect/jsonrpc-utils";
export declare const REACT_NATIVE_PRODUCT = "ReactNative";
export declare const ENV_MAP: {
    reactNative: string;
    node: string;
    browser: string;
    unknown: string;
};
export declare const EMPTY_SPACE = " ";
export declare const COLON = ":";
export declare const SLASH = "/";
export declare const DEFAULT_DEPTH = 2;
export declare const ONE_THOUSAND = 1000;
export declare const SDK_TYPE = "js";
export declare function isNode(): boolean;
export declare function isReactNative(): boolean;
export declare function isBrowser(): boolean;
export declare function getEnvironment(): string;
export declare function appendToQueryString(queryString: string, newQueryParams: any): string;
export declare function getAppMetadata(): SignClientTypes.Metadata;
export declare function getRelayClientMetadata(protocol: string, version: number): RelayerClientMetadata;
export declare function getJavascriptOS(): string;
export declare function getJavascriptID(): string;
export declare function formatUA(protocol: string, version: number, sdkVersion: string): string;
export declare function formatRelayRpcUrl({ protocol, version, relayUrl, sdkVersion, auth, projectId, useOnCloseEvent, }: RelayerTypes.RpcUrlParams): string;
export declare function getHttpUrl(url: string): string;
export declare function assertType(obj: any, key: string, type: string): void;
export declare function parseContextNames(context: string, depth?: number): any[];
export declare function formatMessageContext(context: string): string;
export declare function hasOverlap(a: any[], b: any[]): boolean;
export declare function getLastItems(arr: any[], depth?: number): any[];
export declare function mapToObj<T = any>(map: Map<string, T>): Record<string, T>;
export declare function objToMap<T = any>(obj: Record<string, T>): Map<string, T>;
export declare function mapEntries<A = any, B = any>(obj: Record<string, A>, cb: (x: A) => B): Record<string, B>;
export declare const enumify: <T extends {
    [index: string]: U;
}, U extends string>(x: T) => T;
export declare function capitalizeWord(word: string): string;
export declare function capitalize(str: string): string;
export declare function createDelayedPromise<T>(expiry?: number, expireErrorMessage?: string): {
    resolve: (value?: T) => void;
    reject: (value?: ErrorResponse) => void;
    done: () => Promise<T>;
};
export declare function createExpiringPromise<T>(promise: Promise<T>, expiry: number, expireErrorMessage?: string): Promise<unknown>;
export declare function formatExpirerTarget(type: "topic" | "id", value: string | number): string;
export declare function formatTopicTarget(topic: string): string;
export declare function formatIdTarget(id: number): string;
export declare function parseExpirerTarget(target: string): {
    id?: number | undefined;
    topic?: string | undefined;
};
export declare function calcExpiry(ttl: number, now?: number): number;
export declare function isExpired(expiry: number): boolean;
export declare function engineEvent(event: EngineTypes.Event, id?: number | string | undefined): string;
export declare function mergeArrays<T>(a?: T[], b?: T[]): T[];
export declare function handleDeeplinkRedirect({ id, topic, wcDeepLink, }: {
    id: number;
    topic: string;
    wcDeepLink: string;
}): Promise<void>;
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