/// <reference types="bluebird" />
export declare const types: {
    postgres: string;
    mysql: (necessity: string, index: string, defaultValue?: string) => string;
    websql: (necessity: string, index: string, defaultValue?: string) => string;
    odata: {
        name: string;
    };
};
export declare const validate: (arg1: any, arg2: boolean) => import("bluebird")<number | null>;