DefinitelyTyped/types/level-sublevel/index.d.ts

// Type definitions for level-sublevel
// Project: https://github.com/dominictarr/level-sublevel
// Definitions by: Bas Pennings <https://github.com/basp>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

import * as levelup from "levelup";

export = sublevel

declare var sublevel: sublevel.Constructor;

declare namespace sublevel {
interface Hook {
	(ch: any, add: (op: Batch|boolean) => void): void;
}

interface Batch extends levelup.Batch {
	prefix?: Sublevel;
}

interface Sublevel extends levelup.LevelUpBase<Batch> {
	sublevel(key: string): Sublevel;
	pre(hook: Hook): Function;
}

type Constructor = (levelup: levelup.LevelUp) => Sublevel
}