test: exclude unused code from coverage

index.js

@@ -58,6 +58,12 @@ InstallDots.prototype.compileToFile = function(path, template, def) {
  , fn;
 
  for (var property in defs) {
+ // It looks like the code block inside "if" below can never be executed,
+ // because InstallDots constructor is private, compileToFile is only called from compileAll method
+ // and def parameter is never passed to it, so the condition in if will always fail.
+ // This code will be removed from the next major version.
+ // For now it is only excluded from coverage report
+ /* istanbul ignore if */
  if (defs[property] !== def[property] && defs[property] !== this.__includes[property]) {
  fn = undefined;
  if (typeof defs[property] === 'string') {