/**
 * Platform-specific utilities for handling differences between web and React Native
 */
/**
 * Check if the current environment is React Native
 */
export declare const isReactNative: () => boolean;
/**
 * Platform-safe implementation of postMessage
 */
export declare const postMessageSafe: (message: any, target?: any, webViewRef?: React.RefObject<any>) => void;
/**
 * Platform-safe base64 encoding and decoding
 */
export declare const base64: {
    encode: (input: string) => string;
    decode: (input: string) => string;
};
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