export declare const STELLAR_BURN_ADDRESS = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
export declare function isAccountMultiSign(account: string): Promise<boolean>;
/**
 * Returns true if address is valid, false if it's invalid (can't parse or wrong checksum)
 *
 * @param {*} address
 */
export declare function isAddressValid(address: string): boolean;
/** Compile-time exhaustiveness helper: call when a value should be `never`. */
export declare function assertUnreachable(_: never): never;
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