Add semicolon for tdd exports

test/pickBy/pickBy.js

@@ -2,4 +2,4 @@ const pickBy = (obj, fn) =>
 Object.keys(obj)
 .filter(k => fn(obj[k], k))
 .reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
-module.exports = pickBy
+module.exports = pickBy;