type Join<T extends Array<string | number | Symbol>> = T[number];
type DeepPartial<T> = Partial<{
    [K in keyof T]?: T[K] extends object ? Update<T[K]> : T[K];
}>;
type Json = string | number | boolean | null | Json[] | {
    [key: string]: Json;
};
type JsonObject = {
    [key: string]: Json;
};
type Operators = {
    $gt: number;
    $gte: number;
    $lt: number;
    $lte: number;
    $text: string;
    $regex: RegExp;
    $has: Json;
    $size: number;
    $not: Json;
};
type Draft = {
    _id?: string;
} & {
    [key: string]: Json;
    [key: `$${string}`]: never;
    [key: `__${string}`]: never;
};
type Doc<T extends Draft> = T & {
    readonly _id: string;
    readonly __deleted?: boolean;
};
type Query<T> = Partial<{
    [K in keyof T]: T[K] extends JsonObject ? Query<T[K]> : T[K] | Partial<Operators>;
}>;
type Update<T> = Omit<DeepPartial<T>, '__deleted' | '_id'>;

type LeafDBOptions = {
    storage?: string | {
        root: string;
        name?: string;
    };
};
declare class LeafDB<T extends Draft> {
    static id(): string;
    private readonly _memory;
    private readonly _storage?;
    private _set;
    private _delete;
    constructor(options?: LeafDBOptions);
    open(): {
        raw: string;
        err: unknown;
    }[];
    close(): void;
    insert(drafts: T[]): Doc<T>[];
    select(...queries: Array<Query<Doc<T>>>): Doc<T>[];
    selectById(...ids: string[]): Doc<T>[];
    update(update: Update<Doc<T>>, ...queries: Array<Query<Doc<T>>>): Doc<T>[];
    delete(...queries: Array<Query<Doc<T>>>): number;
    drop(): void;
}

export { DeepPartial, Doc, Draft, Join, Json, JsonObject, LeafDBOptions, Operators, Query, Update, LeafDB as default };