import { Comparable } from '@ucast/core';
export interface MongoQueryTopLevelOperators<Value> {
    $and?: MongoQuery<Value>[];
    $or?: MongoQuery<Value>[];
    $nor?: MongoQuery<Value>[];
    $where?: (this: Value) => boolean;
}
export interface MongoQueryFieldOperators<Value = any> {
    $eq?: Value;
    $ne?: Value;
    $lt?: Extract<Comparable, Value>;
    $lte?: Extract<Comparable, Value>;
    $gt?: Extract<Comparable, Value>;
    $gte?: Extract<Comparable, Value>;
    $in?: Value[];
    $nin?: Value[];
    $all?: Value[];
    /** checks by array length */
    $size?: number;
    $regex?: RegExp | string;
    $options?: 'i' | 'g' | 'm' | 'u';
    /** checks the shape of array item */
    $elemMatch?: MongoQuery<Value>;
    $exists?: boolean;
    $not?: Omit<MongoQueryFieldOperators<Value>, '$not'>;
}
export declare type MongoQueryOperators<Value = any> = MongoQueryFieldOperators<Value> & MongoQueryTopLevelOperators<Value>;
export interface CustomOperators {
    toplevel?: {};
    field?: {};
}
declare type ItemOf<T, AdditionalArrayTypes = never> = T extends any[] ? T[number] | AdditionalArrayTypes : T;
declare type OperatorValues<T> = null | T | Partial<ItemOf<T, []>> | MongoQueryFieldOperators<ItemOf<T>>;
declare type Query<T extends Record<PropertyKey, any>, FieldOperators> = {
    [K in keyof T]?: OperatorValues<T[K]> | FieldOperators;
};
export interface DefaultOperators<T> {
    toplevel: MongoQueryTopLevelOperators<T>;
    field: MongoQueryOperators<T>;
}
export declare type BuildMongoQuery<T = Record<PropertyKey, any>, O extends CustomOperators = DefaultOperators<T>> = T extends Record<PropertyKey, any> ? Query<T, O['field']> & O['toplevel'] : O['field'] & O['toplevel'];
export declare type MongoQuery<T = Record<PropertyKey, any>, O extends CustomOperators = CustomOperators> = BuildMongoQuery<T, DefaultOperators<T> & O>;
export {};