/** less scrsize precedence, before gutters are reserved. */
export declare function detectedDimensions(): [number, number];
/**
 * The escape sequences that undo enterScreen, like less's term_deinit.
 *
 * Both ways out of the screen need these in this order, and they were
 * written twice: here and inline in the quit path. Two copies of an
 * exit path is how one of them silently stops matching less.
 */
export declare function leaveScreenCodes(): void;
/**
 * Leaves the alternate screen and raw mode so a child process can use
 * the terminal, like less de-initializing before running a command.
 */
export declare function suspendTerminal(): void;
export declare function enterScreen(): void;
/**
 * The last thing less's term_init does (screen.c:2071): park the cursor
 * at the start of the line.
 *
 * It belongs to the TERMINAL setup, not to the paint that happens to
 * come next, and the difference shows the moment something else comes
 * first: a `+cmd` is ungotten before the first prompt, so less echoes
 * the command behind this CR and paints afterwards. Folding the CR
 * into the first frame instead lost it whenever the first frame was
 * not the first output.
 */
export declare function termInitTail(): void;
export declare function calculateDimensions(): void;