Function convertToColorString

src/util/format.ts:302–313

(color: ZRColor, defaultColor?: ColorString)

 * @return Never be null/undefined.
 */
export function convertToColorString(color: ZRColor, defaultColor?: ColorString): ColorString {
    defaultColor = defaultColor || 'transparent';
    return zrUtil.isString(color)
        ? color
        : zrUtil.isObject(color)
        ? (
            (color as GradientObject).colorStops
            && ((color as GradientObject).colorStops[0] || {}).color
            || defaultColor
        )
        : defaultColor;
}

export {truncateText} from 'zrender/src/graphic/helper/parseText';