/**
 * The root filter that contains metadata information about the filter.
 *
 * The main purpose of this is to ensure that filters get the
 * __type__ information to correctly identify how to handle them.
 */
export interface IZFilterMetadata {
    /**
     * Metadata type information about this filter.
     */
    __type__: string;
}
/**
 * Represents a filter that contains a given operator.
 *
 * @param TOperator -
 *        The type of the operator.
 */
export interface IZFilterOperator<TOperator> extends IZFilterMetadata {
    /**
     * The operator that relates the subject to something.
     */
    operator: TOperator;
}
/**
 * Represents a filter with an operator and contains a subject on a given target.
 */
export interface IZFilterSubject<TOperator> extends IZFilterOperator<TOperator> {
    /**
     * The filed to sort by.
     */
    subject: string;
}