import { Client, Config } from '../lang';
import { QueryResult } from 'mysql2/typings/mysql/lib/protocol/packets';
export type Cluster = 'info' | 'error' | 'sys' | 'all';
export declare const Events: {
    create: string;
    initial: string;
    ready: string;
};
/**
 * Construct a type with a set of properties K of type T
 */
export type MysqlConfigs<T extends Config> = {
    [P in string]: T;
};
export type MysqlTarget = {
    SQL: Client;
    SQLS: Record<any, Client>;
    __SQL_CACHE?: any;
};
export type Sql = {
    sql: string;
    params: any[];
};
export type SelectOption = {
    where?: object;
    columns?: string | string[];
    orders?: string | any[];
    limit?: number;
    offset?: number;
};
export type InsertOption = {
    columns?: string[];
};
export type InsertResult = {
    fieldCount: number;
    affectedRows: number;
    insertId: number;
    serverStatus: number;
    warningCount: number;
    message: string;
    protocol41: boolean;
    changedRows: number;
} & QueryResult;
export type UpdateOption = {
    where?: object;
    columns?: string[];
};
export type UpdateResult = InsertResult;
export type DeleteResult = InsertResult;
export type LockResult = InsertResult;
export type UpdateRow = {
    row?: object;
    where?: object;
    [key: string]: any;
};
export type LockTableOption = {
    tableName: string;
    lockType: string;
    tableAlias: string;
};
export type BeforeQueryHandler = (sql: string) => string | undefined | void;
export type AfterQueryHandler = (sql: string, result: any, execDuration: number, err?: Error) => void;
export type WhereOperate = {
    key: string;
    operate?: string;
    value?: any;
};