import { SvgTransformConfig } from './types';
/** round a pixel dimensions to a fixed number of decimal places, e.g. '2px 2.1234px' -> '2 2.123'  */
export declare const roundPxDecimalPlaces: (s: string, n: number, preservePx?: boolean) => string;
/** convert an rgb(r g b) or rgb(r g b a) string into hex */
export declare const rgb2hex: (rgb: string | undefined) => string;
export declare const cleanTransform: (x: string | undefined, n: number) => string | null | undefined;
export declare const cleanStyle: (raw: string, n: number) => {
    style: string;
    transform: string | null | undefined;
};
/**
 * scan an svg element to summarize components and class names
 *
 * @param element an html element
 * @param config configuration for svg cleaning, should have 'skipRoles'
 * @param content dictionary with components and class names, used internally to recursively traverse element
 */
export declare const scanSvg: (element: HTMLElement, config: SvgTransformConfig, content?: Record<string, Set<string>>) => Record<string, Set<string>>;
/**
 * simplify a set of style definitions so that they contain only entries that are relevant in some content
 *
 * @param styles string with style definitions, lines separated by newlines
 * @param content dictionary with components and class names, used internally to recursively traverse element
 */
export declare const shakeStyles: (styles: string | null, content: Record<string, Set<string>>) => string;
/**
 * process css lines to replace an existing ancestor with a new string
 */
export declare const changeAncestor: (styles: string | null, removeAncestor: boolean, addAncestor?: string | null) => string;
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