Codacy style changes for test files

test/intersectionBy/intersectionBy.js

@@ -1,5 +1,6 @@
 const intersectionBy = (a, b, fn) => {
-const s = new Set(b.map(x => fn(x)));
-return a.filter(x => s.has(fn(x)));
+  const s = new Set(b.map(x => fn(x)));
+  return a.filter(x => s.has(fn(x)));
 };
+
 module.exports = intersectionBy;