/**
 * Is the string a valid ethereum address?
 */
export declare function isAddress(address: any): address is string;
/**
 * Returns a normalized and checksummed address for the given address.
 *
 * @param address - the address to reformat
 * @returns checksummed address
 */
export declare function toChecksumFormat(address: string): string;
/**
 * Determine if two addresses are equal ignoring case (which is a consideration
 * because of checksumming).
 */
export declare function equalAddresses(leftAddress: string, rightAddress: string): boolean;
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