import { scanOptions } from '../options';
export declare const startupErrors: {
    count: number;
};
/**
 * Applies $LESS/$MORE and the command line options, like less's main()
 * before edit_first: session state resets first so ++cmd and -o
 * survive to startup, and the rebuild hook drops so -s/-x/-r cannot
 * fire a previous session's pipeline.
 *
 * @param content - Loaded lines for immediate handlers, or [] when
 *   scanning before any file opens.
 */
export declare function startupInit(content: string[]): ReturnType<typeof scanOptions>;
export declare function printStartupError(message: string): void;
export declare function warnReturn(): Promise<string>;