fix: typescript declarations + extending to events

src/vuedraggable.d.ts

@@ -1,26 +1,75 @@
 declare module 'vuedraggable' {
-  import Vue from 'vue';
-  class Draggable extends Vue {
-    static install(vue: typeof Vue): void;
-
-    noTransitionOnDrag: boolean;
-
-    element: string;
-
-    tag: string;
-
-    options: object;
-
-    componentData: object;
-
-    clone: any;
-
-    move: any;
-
-    list: any[];
-
-    value: any[];
-  }
-
-  export = Draggable;
+  import Vue, { VueConstructor } from 'vue';
+
+  type CombinedVueInstance<
+    Instance extends Vue,
+    Data,
+    Methods,
+    Computed,
+    Props
+  > = Data & Methods & Computed & Props & Instance;
+
+  type ExtendedVue<
+    Instance extends Vue,
+    Data,
+    Methods,
+    Computed,
+    Props
+  > = VueConstructor<
+    CombinedVueInstance<Instance, Data, Methods, Computed, Props> & Vue
+  >;
+
+  export type DraggedContext<T> = {
+    index: number;
+    futureIndex: number;
+    element: T;
+  };
+
+  export type DropContext<T> = {
+    index: number;
+    component: Vue;
+    element: T;
+  };
+
+  export type Rectangle = {
+    top: number;
+    right: number;
+    bottom: number;
+    left: number;
+    width: number;
+    height: number;
+  };
+
+  export type MoveEvent<T> = {
+    originalEvent: DragEvent;
+    dragged: Element;
+    draggedContext: DraggedContext<T>;
+    draggedRect: Rectangle;
+    related: Element;
+    relatedContext: DropContext<T>;
+    relatedRect: Rectangle;
+    from: Element;
+    to: Element;
+    willInsertAfter: boolean;
+    isTrusted: boolean;
+  };
+
+  const draggable: ExtendedVue<
+    Vue,
+    {},
+    {},
+    {},
+    {
+      options: any;
+      list: any[];
+      value: any[];
+      noTransitionOnDrag?: boolean;
+      clone: any;
+      tag?: string | null;
+      move: any;
+      componentData: any;
+    }
+  >;
+
+  export default draggable;
 }