/** PowerPoint body lvl1 hanging indent: marL 18pt / 28pt type. */
export declare const PPTX_BODY_BULLET_INDENT_EM: number;
export type PptxTextInset = {
    t: number;
    r: number;
    b: number;
    l: number;
};
export type ImportedParagraphMetrics = {
    lineHeight: number;
    margin: number | null;
};
/** CSS cascade: the last `prop:` in a style string wins. */
export declare function lastCssDeclaration(style: string, prop: string): string | null;
/**
 * Read line-height / paragraph spacing from pptxtojson paragraph HTML.
 * Duplicate `line-height` declarations (default 1.2 then the real value) must
 * use the last one — otherwise imported boxes clip like the Odkazy slide.
 */
export declare function importedParagraphMetrics(html: string, ratio: number): ImportedParagraphMetrics;
/** pptxtojson insets are pt; the editor paints px. */
export declare function scalePptxTextInset(inset: PptxTextInset | undefined, ratio: number): [number, number, number, number] | undefined;
/**
 * Overflow-wrap:anywhere line count using a mean glyph width. URLs have no
 * spaces, so PowerPoint / CSS wrap them by character.
 */
export declare function estimateAnywhereWrapLines(text: string, innerWidth: number, fontSize: number, avgGlyphEm?: number): number;
export declare function estimateColumnHeight(linesPerBlock: number[], fontSize: number, lineHeight: number, blockSpace: number): number;
export declare function textFitsFixedBox(contentHeight: number, boxInnerHeight: number, epsilon?: number): boolean;