/** @format */
/**
 * Abstract class containing utility methods for Map operations.
 */
export declare abstract class MapUtils {
    /**
     * Returns the value associated with the specified key if it exists in the map.
     * If the key is not present, computes a new value using the provided function,
     * inserts it into the map, and returns the new value.
     *
     * @param {Map<K, V>} map - The map to operate on.
     * @param {K} key - The key to look up.
     * @param {() => V} ifAbsent - Function to generate a value if the key is absent.
     * @returns {V} The existing or newly created value associated with the key.
     */
    static putIfAbsent<K, V>(map: Map<K, V>, key: K, ifAbsent: () => V): V;
}