feat: strictMode show or not throw an exception, close #102

posthtml · Oct 30, 2020 · dbb32c9 · dbb32c9
1 parent 2149183
commit dbb32c9
Showing 1 changed file with 13 additions and 4 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -112,9 +112,10 @@ module.exports = function postHTMLExpressions (options) {
     switchTags: ['switch', 'case', 'default'],
     loopTags: ['each'],
     scopeTags: ['scope'],
-    ignoredTag: 'raw'
+    ignoredTag: 'raw',
+    strictMode: true
   }, options)
-
+  
   // set tags
   loops = options.loopTags
   scopes = options.scopeTags
@@ -155,7 +156,7 @@ module.exports = function postHTMLExpressions (options) {
 
   // kick off the parsing
   return function (tree) {
-    return normalizeTree(clearRawTag(walk({ locals: options.locals }, tree)), tree.options)
+    return normalizeTree(clearRawTag(walk({ locals: options.locals, strictMode: options.strictMode }, tree)), tree.options)
   }
 }
 
@@ -267,7 +268,15 @@ function walk (opts, nodes) {
       }
 
       // evaluate the expression, get the winning condition branch
-      const branch = branches[vm.runInContext(expression, ctx)]
+      let branch;
+      try {
+        branch = branches[vm.runInContext(expression, ctx)]
+      } catch (error) {
+        if (opts.strictMode) {
+          throw new SyntaxError(error)
+        }
+      }
+
 
       // remove all of the conditional tags from the tree
       // we subtract 1 from i as it's incremented from the initial if statement