/**
 * Validates if a string is a valid Ethereum address
 * @param address The address to validate
 * @returns True if the address is valid, false otherwise
 */
export declare function isValidAddress(address: string): boolean;
/**
 * Converts a number to a string with the correct decimal places for a token
 * @param amount The amount to convert
 * @param decimals The number of decimals the token has
 * @returns The formatted amount as a string
 */
export declare function formatTokenAmount(amount: number, decimals: number): string;
/**
 * Converts a string token amount from wei to a human-readable number
 * @param amount The amount in wei (smallest unit)
 * @param decimals The number of decimals the token has
 * @returns The formatted amount as a number
 */
export declare function parseTokenAmount(amount: string, decimals: number): number;
/**
 * Normalizes a chain ID to its numerical value
 * @param chainId The chain ID as a string or number
 * @returns The chain ID as a number
 */
export declare function normalizeChainId(chainId: string | number): number;