import { type AliasableExpression, type ColumnBuilderCallback, type ColumnDataType, type DatabaseIntrospector, type Dialect, type Expression, type Kysely, type KyselyPlugin, type OnModifyForeignAction, type RawBuilder, type SelectQueryBuilder, type SelectQueryNode, type Simplify } from "kysely";
import type { BaseIntrospector, BaseIntrospectorConfig } from "./BaseIntrospector";
import type { Constructor } from "../../core";
export type QB = SelectQueryBuilder<any, any, any>;
export type IndexMetadata = {
    name: string;
    table: string;
    isUnique: boolean;
    columns: {
        name: string;
        order: number;
    }[];
};
export interface SelectQueryBuilderExpression<O> extends AliasableExpression<O> {
    get isSelectQueryBuilder(): true;
    toOperationNode(): SelectQueryNode;
}
export type SchemaResponse = [string, ColumnDataType, ColumnBuilderCallback] | undefined;
declare const FieldSpecTypes: readonly ["text", "integer", "real", "blob", "date", "datetime", "timestamp", "boolean", "json"];
export type FieldSpec = {
    type: (typeof FieldSpecTypes)[number];
    name: string;
    nullable?: boolean;
    dflt?: any;
    unique?: boolean;
    primary?: boolean;
    references?: string;
    onDelete?: OnModifyForeignAction;
    onUpdate?: OnModifyForeignAction;
};
export type IndexSpec = {
    name: string;
    columns: string[];
    unique?: boolean;
};
export type DbFunctions = {
    jsonObjectFrom<O>(expr: SelectQueryBuilderExpression<O>): RawBuilder<Simplify<O> | null>;
    jsonArrayFrom<O>(expr: SelectQueryBuilderExpression<O>): RawBuilder<Simplify<O>[]>;
    jsonBuildObject<O extends Record<string, Expression<unknown>>>(obj: O): RawBuilder<Simplify<{
        [K in keyof O]: O[K] extends Expression<infer V> ? V : never;
    }>>;
};
export declare abstract class Connection<DB = any> {
    fn: Partial<DbFunctions>;
    protected plugins: KyselyPlugin[];
    protected initialized: boolean;
    kysely: Kysely<DB>;
    protected readonly supported: {
        batching: boolean;
    };
    constructor(kysely: Kysely<DB>, fn?: Partial<DbFunctions>, plugins?: KyselyPlugin[]);
    init(): Promise<void>;
    /**
     * This is a helper function to manage Connection classes
     * coming from different places
     * @param conn
     */
    static isConnection(conn: unknown): conn is Connection;
    getIntrospector(): BaseIntrospector;
    supports(feature: keyof typeof this.supported): boolean;
    ping(): Promise<boolean>;
    protected batch<Queries extends QB[]>(queries: [...Queries]): Promise<{
        [K in keyof Queries]: Awaited<ReturnType<Queries[K]["execute"]>>;
    }>;
    batchQuery<Queries extends QB[]>(queries: [...Queries]): Promise<{
        [K in keyof Queries]: Awaited<ReturnType<Queries[K]["execute"]>>;
    }>;
    protected validateFieldSpecType(type: string): type is FieldSpec["type"];
    abstract getFieldSchema(spec: FieldSpec, strict?: boolean): SchemaResponse;
    close(): Promise<void>;
}
export declare function customIntrospector<T extends Constructor<Dialect>>(dialect: T, introspector: Constructor<DatabaseIntrospector>, options?: BaseIntrospectorConfig): {
    create(...args: ConstructorParameters<T>): {
        createIntrospector(db: Kysely<any>): DatabaseIntrospector;
        createDriver(): import("kysely").Driver;
        createQueryCompiler(): import("kysely").QueryCompiler;
        createAdapter(): import("kysely").DialectAdapter;
    } & Dialect;
};
export {};