partial web extensions typescript definition

declare namespace browser.bookmarks {
  export interface BookmarkTreeNode {
    id: string;
    parentId: string;
    title: string;
    index: string;
    url?: string;
    children?: BookmarkTreeNode[];
    unmodifiable?: string;
  }

  export function get(id: string | string[]): Promise<Array<BookmarkTreeNode>>;
  export function getTree(): Promise<Array<BookmarkTreeNode>>;
}

declare namespace browser.tabs {
  interface CanAddListener {
    addListener(fn: (tabs: browser.tabs.Tab[]) => void): void;
  }

  export interface Tab {
    title: string;
    url: string;
  }

  export var onUpdated: CanAddListener;
  export var onActivated: CanAddListener;


  export function query(params: object): Promise<browser.tabs.Tab[]>;
}

declare namespace browser.windows {
  export var onFocusChanged: browser.tabs.CanAddListener;
}