/**
 * Common types/interfaces such as Class/Constructor/Options/Callback
 */
/**
 * Interface for classes with `new` operator and static properties/methods
 */
export interface Class<T> {
    new (...args: any[]): T;
    [property: string]: any;
}
/**
 * Interface for constructor functions without `new` operator, for example,
 * ```
 * function Foo(x) {
 *   if (!(this instanceof Foo)) { return new Foo(x); }
 *   this.x = x;
 * }
 * ```
 */
export interface ConstructorFunction<T> {
    (...args: any[]): T;
}
/**
 * Constructor type - class or function
 */
export declare type Constructor<T> = Class<T> | ConstructorFunction<T>;
/**
 * Objects with open properties
 */
export interface AnyObject {
    [property: string]: any;
}
export declare type ObjectType<T> = T | AnyObject;
/**
 * Type alias for Node.js options object
 */
export declare type Options = AnyObject | null | undefined;
/**
 * Type alias for Node.js callback functions
 */
export declare type Callback<T> = (err: Error | string | null | undefined, result?: T) => void;