export type LaunchMode = "text" | "json" | "acp";
export interface LaunchDisposition {
    autoPrint: boolean;
    isInteractive: boolean;
    /** Set when an interactive launch is impossible (non-TTY stdin, nothing to run). */
    nonInteractiveError?: string;
}
/**
 * Decides between interactive, auto-print, and fail-fast launches.
 *
 * A non-TTY stdin means the TUI can never receive input, so an interactive
 * launch would execute the initial prompt and then block in the event loop
 * forever. Prepared command-line input degrades to print mode; without any
 * input to run we fail fast instead of hanging. Explicit `--print` and
 * `--mode` launches are left untouched.
 */
export declare function resolveLaunchDisposition(args: {
    stdinIsTTY: boolean | undefined;
    pipedInput: string | undefined;
    hasPreparedInput: boolean;
    print: boolean;
    mode: LaunchMode | undefined;
}): LaunchDisposition;