Fix for case where no options are passed or options is not an object, causing the plugin to crash.

Author: frederickfogerty

index.js

@@ -189,6 +189,7 @@ function localizeDecl(decl, context) {
 }
 
 module.exports = postcss.plugin('postcss-modules-local-by-default', function (options) {
+  if (typeof options !== 'object') {options = {};} // If options is undefined or not an object the plugin fails
   if(options && options.mode) {
     if(options.mode !== "global" && options.mode !== "local" && options.mode !== "pure") {
       throw new Error("options.mode must be either 'global', 'local' or 'pure' (default 'local')");