/**
 * Guard to prevent interactive prompts from running in non-interactive terminals.
 *
 * When stdin is not a TTY (e.g. piped input, CI, or programmatic execution),
 * @clack/prompts will auto-resolve with default/initial values — which can
 * cause destructive operations (like overwriting config files) without user
 * confirmation. This guard ensures interactive commands fail early and
 * explicitly in non-interactive environments.
 */
export default function ensureInteractive(): void;
/** Thrown when the user cancels a prompt; command dispatchers swallow it. */
export declare class CancelledError extends Error {
    constructor();
}
export declare function assertNotCancel<T>(value: T): asserts value is Exclude<T, symbol>;
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