Add semicolon for tdd exports

test/toSnakeCase/toSnakeCase.js

@@ -4,4 +4,4 @@ str
 .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
 .map(x => x.toLowerCase())
 .join('_');
-module.exports = toSnakeCase
+module.exports = toSnakeCase;