Set Trailing Cmma to (#525)

src/math.ts

@@ -5,7 +5,7 @@ export function distanceBetweenPointAndSegment(
   x1: number,
   y1: number,
   x2: number,
-  y2: number
+  y2: number,
 ) {
   const A = x - x1;
   const B = y - y1;
@@ -42,13 +42,13 @@ export function rotate(
   y1: number,
   x2: number,
   y2: number,
-  angle: number
+  angle: number,
 ) {
   // 𝑎′𝑥=(𝑎𝑥−𝑐𝑥)cos𝜃−(𝑎𝑦−𝑐𝑦)sin𝜃+𝑐𝑥
   // 𝑎′𝑦=(𝑎𝑥−𝑐𝑥)sin𝜃+(𝑎𝑦−𝑐𝑦)cos𝜃+𝑐𝑦.
   // https://math.stackexchange.com/questions/2204520/how-do-i-rotate-a-line-segment-in-a-specific-point-on-the-line
   return [
     (x1 - x2) * Math.cos(angle) - (y1 - y2) * Math.sin(angle) + x2,
-    (x1 - x2) * Math.sin(angle) + (y1 - y2) * Math.cos(angle) + y2
+    (x1 - x2) * Math.sin(angle) + (y1 - y2) * Math.cos(angle) + y2,
   ];
 }