import type { Command } from 'commander';
export declare function isUnrecognizedCommandToken(token: string | undefined, program: Command): token is string;
export declare function suggestCliCommand(token: string, program: Command, maxDistance?: number): string | undefined;
export declare function checkBareUnknownCommand(input: string[], program: Command): {
    isUnknown: true;
    token: string;
    suggestion: string | undefined;
} | {
    isUnknown: false;
};
export declare function installUnknownCommandGuard(interactiveCmd: Command, program: Command): void;