extension option to pass options posthtml-expressions

Author: mxsteini

lib/index.js

@@ -20,9 +20,8 @@ module.exports = (options = {}) => {
       let content;
       let subtree;
       let source;
-      const posthtmlExpressionsOptions = {
-        locals: false
-      }
+      const posthtmlExpressionsOptions = options.posthtmlExpressionsOptions || {locals: false};
+
 
       if (options.delimiters) {
         posthtmlExpressionsOptions.delimiters = options.delimiters;