export interface CliIo {
    stdout: {
        write(text: string): unknown;
    };
    stderr: {
        write(text: string): unknown;
    };
}
/** Default output: the input path with its extension replaced by `.generated.ts`. */
export declare function defaultOutputPath(input: string): string;
/** Runs the CLI; returns the exit code (0 ok, 1 conversion / io failure, 2 usage). */
export declare function runCli(argv: string[], io: CliIo): number;