export type Nullable<T> = T | null;
export type Arrayable<T> = T | T[];
export type Awaitable<T> = Promise<T> | T;
export type Functionable<T> = () => T | T;
export interface AnyObject {
    [key: string]: any;
}
export interface Fn<T = any, R = T> {
    (...arg: T[]): R;
}
export interface PromiseFn<T = any, R = T> {
    (...arg: T[]): Promise<R>;
}
export type TreeItem<T extends AnyObject = AnyObject> = T & {
    children?: TreeItem<T>[];
};
export type TreeList<T extends AnyObject = AnyObject> = TreeItem<T>[];