diff --git a/.eslintrc b/.eslintrc
index ee59538..54565bc 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -15,15 +15,17 @@
   "plugins": [],
   "rules": {
     "class-methods-use-this": 0,
+    "comma-dangle": 0,
     "no-bitwise": 0,
     "no-plusplus": 0,
     "no-restricted-syntax": 0,
-    "no-mixed-operators": ["error", { "allowSamePrecedence": true }],
+    "no-mixed-operators": 0,
     "no-multi-spaces": ["error", { "ignoreEOLComments": true }],
     "no-param-reassign": ["error", { "props": false }],
     "no-underscore-dangle": 0,
     "no-unused-vars": 0,
     "no-continue": 0,
+    "operator-linebreak": 0,
     "function-paren-newline": ["error", "consistent"]
   }
 }
diff --git a/.prettierrc b/.prettierrc
index 544138b..a2ee55f 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,3 +1,4 @@
 {
-  "singleQuote": true
+  "singleQuote": true,
+  "trailingComma": "es5",
 }
diff --git a/src/Arcs1DTrack.js b/src/Arcs1DTrack.js
index a764f38..2d8c36e 100644
--- a/src/Arcs1DTrack.js
+++ b/src/Arcs1DTrack.js
@@ -39,8 +39,10 @@ const Arcs1DTrack = (HGC, ...args) => {
       // tile.graphics.beginFill(0xff0000);
       let polyStr = '';
 
-      if (storePolyStr)
+      if (storePolyStr) {
         polyStr += `M${x1},${this.position[1] + this.dimensions[1]}`;
+      }
+
       graphics.moveTo(x1, this.position[1] + this.dimensions[1]);
 
       const limitX1 = Math.max(0, x1);