diff --git a/lib/part.ts b/lib/part.ts
index 6bbf17e8f48..b71f9c5c01b 100644
--- a/lib/part.ts
+++ b/lib/part.ts
@@ -3,23 +3,10 @@ import { Path } from './path'
 import { Snippet } from './snippet'
 import { Attributes } from './attributes'
 
-function PointProxy(id: string) {
-  this.id = id;
-  this.get = function(points: any, key: string, proxy: ProxyHandler<Map<any, any>>): Point {
-    return points.get(key);
-  };
-  this.set =  function(points: Map<string, Point>, key: string, point: Point, proxy: ProxyHandler<Map<any, any>>) {
-    point.attributes.add('data-key', key);
-    point.attributes.add('data-part', this.id);
-    points.set(key, point);
-    return true;
-  };
-};
-
 export class Part {
   id: string;
   render: boolean;
-  points: any;
+  points: { [index: string]: Point; } = {};
   paths: { [index: string]: Path; } = {};
   snippets: { [index: string]: Snippet; } = {};
   attributes = new Attributes();
@@ -28,7 +15,6 @@ export class Part {
   constructor(id: string) {
     this.id = id;
     this.render = (id.substr(0,1) === '_') ? false : true;
-    this.points = new Proxy(new Map(), new PointProxy(id));
     this.points.origin = new Point(0,0);
 
     return this;