แก้ coding style ภาค 4

src/stress.js

@@ -9,7 +9,8 @@ export function getStress (nodes, distance) {
   let sumLowDDistSq = 0;
   for (let j = nodes.length - 1; j >= 1; j--) {
     for (let i = 0; i < j; i++) {
-      let source = nodes[i], target = nodes[j];
+      let source = nodes[i];
+      let target = nodes[j];
       let lowDDist = Math.hypot(target.x - source.x, target.y - source.y);
       let highDDist = distance(source, target);
       sumDiffSq += Math.pow(highDDist - lowDDist, 2);