export declare const OP: {
    EQUALS: string;
    NOT_EQUAL: string;
    GREATER: string;
    GREATER_OR_EQUAL: string;
    LOWER: string;
    LOWER_OR_EQUAL: string;
    LIKE: string;
    IN: string;
    NOT_IN: string;
    BETWEEN: string;
    NOT_BETWEEN: string;
    IS: string;
};
/**
 * Represents a single condition
 */
export interface ICondition {
    and(cond: ICondition): ICondition;
    or(cond: ICondition): ICondition;
}
/**
 * Example
 *
 * {
 *    "gender": { "=": "male" },
 *    "species": { "IN": ["cat", "dog"]}
 * }
 *
 * @export
 * @interface IConditionsMap
 */
export interface IConditionsMap {
    [field: string]: {
        [opKey: string]: any;
    };
}
export interface IConditionGroup {
    conditions: ICondition[];
    operator: 'AND' | 'OR';
}
export declare class Condition implements ICondition {
    field: string;
    op: string;
    value: string;
    constructor(field: string, op: string, value: string);
    and(cond: ICondition): ConditionGroup;
    or(cond: ICondition): ConditionGroup;
}
/**
 * Represents a group of conditions combined by a specific logic operator
 */
export declare class ConditionGroup implements ICondition {
    conditions: ICondition[];
    operator: 'AND' | 'OR';
    constructor(conditions: ICondition[], operator: 'AND' | 'OR');
    and(cond: ICondition): ConditionGroup;
    or(cond: ICondition): ConditionGroup;
}