better production detection, fix version injection

src/Global.ts

@@ -86,18 +86,10 @@ export const glob: any =
     ? self
     : {};
 
-export namespace Konva2 {
-  export const version = '@@version';
-}
-
 export const Konva = {
   version: '@@version',
   isBrowser: detectBrowser(),
-  isUnminified: /comment/.test(
-    function() {
-      /* comment */
-    }.toString()
-  ),
+  isUnminified: /param/.test(function(param) {}.toString()),
   dblClickWindow: 400,
   getAngle(angle) {
     return Konva.angleDeg ? angle * PI_OVER_180 : angle;

src/index-types.d.ts

@@ -36,6 +36,8 @@ declare namespace Konva {
   export const isDragging: () => boolean;
   export const isDragReady: () => boolean;
 
+  export type Vector2d = import('./types').Vector2d;
+
   export const Node: typeof import('./Node').Node;
   export type Node = import('./Node').Node;
   export type NodeConfig = import('./Node').NodeConfig;