export declare function convertCssUnitToPixel(cssValue: string, target: HTMLElement, percentTarget: 'width' | 'height'): number;
export declare function getCssUnit(cssValue: string): string;
export declare function convertCssUnit(cssValue: string | number, target: HTMLElement, percentTarget: 'width' | 'height', unit: string, roundFunc?: (val: number) => string): string;
export declare function splitCssGridColumnSizes(sizes: String): string[];
export declare function getExpandedCssGridColumnSizes(sizes: String): string[];