import { TextStyle, ViewStyle } from "./types";
/**
 * Extracts text style from a style object
 */
export declare function extractTextStyle(style: any): TextStyle;
/**
 * Extracts view/layout style from a style object
 */
export declare function extractViewStyle(style: any): ViewStyle;
/**
 * Determines if text should be bold
 */
export declare function isBold(style: TextStyle): boolean;
/**
 * Maps fontSize to ESC/POS character size (width x height multipliers)
 *
 * Font size mapping using ESC ! command (limited to 2x2 maximum):
 * - 8-12px  → 1x1 (normal)
 * - 13-18px → 1x2 (normal width, double height)
 * - 19-24px → 2x1 (double width, normal height)
 * - 25+px   → 2x2 (double width, double height)
 *
 * Note: ESC ! command only supports up to 2x2 character size.
 * Larger sizes (3x, 4x, etc.) would require GS ! command which may not
 * be supported on all thermal printers (e.g., Bematech MP-4200 TH).
 *
 * PDF uses zoom factor (default 0.46), so actual sizes are smaller:
 * - 16 * 0.46 = 7.36 (normal text)
 * - 18 * 0.46 = 8.28 (medium text)
 * - 20 * 0.46 = 9.2 (title text)
 *
 * We use raw fontSize values (ignoring zoom) for better differentiation
 */
export declare function mapFontSizeToESCPOS(fontSize?: number | string): {
    width: number;
    height: number;
};
/**
 * Maps textAlign to ESC/POS alignment
 */
export declare function mapTextAlign(textAlign?: string): "left" | "center" | "right";
/**
 * Calculates spacing (margin/padding) in lines
 * Approximates pixels to line feeds
 */
export declare function calculateSpacing(value?: number): number;
/**
 * Determines if a border is dashed
 */
export declare function isDashedBorder(border?: string): boolean;
/**
 * Generates a divider line based on border style
 */
export declare function generateDividerLine(width: number, dashed?: boolean): string;
/**
 * Merges multiple style objects (handles spread syntax)
 */
export declare function mergeStyles(...styles: any[]): any;
/**
 * Parses width percentage to column width in characters
 * Uses Math.round() to minimize rounding errors
 */
export declare function parseWidth(width: string | number | undefined, totalWidth: number): number;
/**
 * Aligns text within a column width (using CP860 byte length for accurate padding)
 */
export declare function alignTextInColumn(text: string, width: number, align: "left" | "center" | "right"): string;
/**
 * Splits text into multiple lines if it exceeds width
 */
export declare function wrapText(text: string, width: number): string[];
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