use posthtmlexpressions object

Author: itsdiay

lib/index.js

@@ -20,21 +20,26 @@ module.exports = (options = {}) => {
       let content;
       let subtree;
       let source;
-      let locals = false;
-      const delimiters = options.delimiters || ['{{', '}}'];
+      const posthtmlExpressionsOptions = {
+        locals: false,
+      }
+
+      if (options.delimiters) {
+        posthtmlExpressionsOptions.delimiters = options.delimiters;
+      }
 
       if (src) {
         src = path.resolve(options.root, src);
         source = fs.readFileSync(src, options.encoding);
 
         try {
           const localsRaw = node.attrs.locals || (node.content ? node.content.join().replace(/\n/g, '') : false);
-          locals = JSON.parse(localsRaw);
+          posthtmlExpressionsOptions.locals = JSON.parse(localsRaw);
         } catch {}
 
-        if (locals) {
+        if (posthtmlExpressionsOptions.locals) {
           const result = posthtml()
-            .use(expressions({locals, delimiters}))
+            .use(expressions(posthtmlExpressionsOptions))
             .process(source, {sync: true});
           source = result.html;
         }