/**
 * pop user register — register a username on the UniversalAccountRegistry.
 *
 * Usernames live on the home chain (Arbitrum) unless --chain overrides, so
 * this command deliberately does NOT inherit POP_DEFAULT_CHAIN (preserved
 * legacy behavior). Validation is the shared requireValidUsername (same
 * 3-32 alphanumeric+underscore rule the contract's ValidationLib enforces),
 * and pre-flight fails fast (exit 4) when the name is already registered —
 * UAR.registerAccount reverts UsernameTaken on-chain otherwise.
 */
import type { Argv, ArgumentsCamelCase } from 'yargs';
interface RegisterArgs {
    username: string;
    chain?: number;
    rpc?: string;
    'private-key'?: string;
    'dry-run'?: boolean;
    yes?: boolean;
    preflight?: boolean;
}
export declare const registerHandler: {
    builder: (yargs: Argv) => Argv<{
        username: string;
    }>;
    handler: (argv: ArgumentsCamelCase<RegisterArgs>) => Promise<void>;
};
export {};