export declare class Mutator {
    #private;
    /**
     * Adds a mutation to the mutator instance.
     * @param name The name of the mutation.
     * @param mutation The mutation function.
     */
    add(name: string, mutation: Function): void;
    /**
     * Removes a mutation to the mutator instance.
     * Any cached mutation values for this mutation will be purged.
     * @param name The name of the mutation.
     */
    remove(name: string): void;
    /**
     * Clears the mutator cache.
     * The entire cache, or cache for a specific mutator, can be cleared
     * by passing or omitting the mutator name as an argument.
     * @param name The mutator name to clear the cache for.
     */
    clearCache(name?: string): void;
    /**
     * Mutates and returns a criteria object.
     * @param criteria The criteria to mutate.
     */
    mutate(criteria: object | object[]): Promise<object | object[]>;
}