import { Style } from '@teaui/core';
/**
 * Interface matching the xterm-headless IBufferCell API.
 * Using an interface allows easy mocking in tests.
 */
export interface XtermCell {
    getChars(): string;
    getWidth(): number;
    getFgColor(): number;
    getBgColor(): number;
    getFgColorMode(): number;
    getBgColorMode(): number;
    isBold(): number;
    isDim(): number;
    isItalic(): number;
    isUnderline(): number;
    isInverse(): number;
    isBlink(): number;
    isInvisible(): number;
    isStrikethrough(): number;
}
/**
 * Convert an xterm-headless buffer cell's attributes to a TeaUI Style.
 */
export declare function xtermCellToStyle(cell: XtermCell): Style;
/**
 * Style cache that avoids creating new Style objects for repeated cell styles.
 * Most terminal content uses very few distinct styles (typically 1-10), so this
 * eliminates thousands of Style allocations per frame.
 *
 * Call `clear()` periodically (e.g. on resize) to prevent unbounded growth,
 * though in practice the cache stays very small.
 */
export declare class StyleCache {
    #private;
    constructor();
    /**
     * Get or create a Style for the given xterm cell.
     * Returns the same Style instance for cells with identical styling.
     */
    styleForCell(cell: XtermCell): Style;
    /** Number of cached styles (for testing/debugging). */
    get size(): number;
    /** Clear the cache. */
    clear(): void;
}