Index: node_modules/d3-delaunay/src/polygon.js
===================================================================
--- node_modules/d3-delaunay/src/polygon.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-delaunay/src/polygon.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,17 @@
+export default class Polygon {
+  constructor() {
+    this._ = [];
+  }
+  moveTo(x, y) {
+    this._.push([x, y]);
+  }
+  closePath() {
+    this._.push(this._[0].slice());
+  }
+  lineTo(x, y) {
+    this._.push([x, y]);
+  }
+  value() {
+    return this._.length ? this._ : null;
+  }
+}