export type QuerySortDirection = 'asc' | 'desc';
export type StringKeys<X> = Extract<keyof X, string>;
export type QuerySortPart<RxDocType = any> = {
    [k in StringKeys<RxDocType> | string]: QuerySortDirection;
};
export type PropertyType<Type, Property extends string> = string extends Property ? unknown : Property extends keyof Type ? Type[Property] : Property extends `${number}` ? Type extends ReadonlyArray<infer ArrayType> ? ArrayType : unknown : Property extends `${infer Key}.${infer Rest}` ? Key extends `${number}` ? Type extends ReadonlyArray<infer ArrayType> ? PropertyType<ArrayType, Rest> : unknown : Key extends keyof Type ? Type[Key] extends Map<string, infer MapType> ? MapType : PropertyType<Type[Key], Rest> : unknown : unknown;
export interface QueryOperators<PathValueType> {
    $eq?: PathValueType;
    $gt?: PathValueType;
    $gte?: PathValueType;
    $lt?: PathValueType;
    $lte?: PathValueType;
    $ne?: PathValueType;
    $in?: PathValueType[];
    $nin?: PathValueType[];
    $regex?: string | RegExp;
    $options?: string;
    $exists?: boolean;
    $type?: 'null' | 'boolean' | 'number' | 'string' | 'array' | 'object';
    $mod?: number;
    $not?: PathValueType;
    $size?: number;
    $elemMatch?: QuerySelector<PathValueType>;
}
type Join<K, P> = K extends string | number ? P extends string | number ? `${K}${'' extends P ? '' : '.'}${P}` : never : never;
type Prev = [
    never,
    0,
    1,
    2,
    3,
    4,
    5,
    6,
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    15,
    16,
    17,
    18,
    19,
    20,
    ...0[]
];
export type Paths<T, D extends number = 10> = [D] extends [never] ? never : T extends object ? {
    [K in keyof T]-?: K extends string | number ? `${K}` | (Paths<T[K], Prev[D]> extends infer R ? Join<K, R> : never) : never;
}[keyof T] : '';
export type QuerySelector<DocType> = Partial<{
    [Property in Paths<DocType>]: QueryOperators<any> | PropertyType<DocType, Property>;
}> & {
    $and?: QuerySelector<DocType>[];
    $or?: QuerySelector<DocType>[];
    $nor?: QuerySelector<DocType>[];
};
export type QuerySelectorAndIndex<RxDocType = any> = {
    selector?: QuerySelector<RxDocType>;
    index?: string | string[];
};
export type QueryNoLimit<RxDocType> = QuerySelectorAndIndex<RxDocType> & {
    sort?: QuerySortPart<RxDocType>[];
};
export type Query<RxDocType = any> = QueryNoLimit<RxDocType> & {
    skip?: number;
    limit?: number;
};
export type MigrationStrategy<DocData = any> = (oldDocumentData: DocData) => Promise<DocData> | DocData | null;
export type MigrationStrategies = {
    [toVersion: number]: MigrationStrategy<any>;
};
export {};