/**
 * Creates a map of CSS properties to their priority information.
 *
 * This function generates a Map where each key is a CSS property (in camelCase),
 * and each value is an object containing:
 * - groupIndex: The index of the property's group
 * - positionInGroup: The position of the property within its group
 * - inUserGroup: Whether the property is in a user-specified group
 *
 * The function prioritizes user-specified groups over default concentric groups.
 * If user groups are provided, they are processed first. Any remaining concentric
 * groups are then processed to ensure complete coverage of CSS properties.
 *
 * @param userGroups - An optional array of user-specified group names to prioritize
 * @returns A Map of CSS properties to their priority information
 *
 * @example
 * const priorityMap = createCSSPropertyPriorityMap(['layout', 'typography']);
 * console.log(priorityMap.get('display')); // { groupIndex: 0, positionInGroup: 0, inUserGroup: true }
 */
export declare const createCSSPropertyPriorityMap: (userGroups?: string[]) => Map<string, {
    groupIndex: number;
    positionInGroup: number;
    inUserGroup: boolean;
}>;