Fix: leading comments added from previous node (fixes #256)

eslint · Mar 13, 2016 · d1b4929 · d1b4929
1 parent 4aabc03
commit d1b4929
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Showing 4 changed files with 488 additions and 2 deletions.
diff --git a/lib/comment-attachment.js b/lib/comment-attachment.js
@@ -63,9 +63,26 @@ module.exports = {
     processComment: function(node) {
         var lastChild,
             trailingComments,
-            i;
+            i,
+            j;
 
         if (node.type === astNodeTypes.Program) {
+            // Remove leading comments that are incorrectly added when no expression exists
+            // between comment and the current node
+            for (i = 1; i < node.body.length; i++) {
+                if (node.body[i].leadingComments) {
+                    for (j = 0; j < node.body[i].leadingComments.length; j++) {
+                        if (node.body[i].leadingComments[j].range[1] < node.body[i - 1].range[1]) {
+                            node.body[i].leadingComments.splice(j, 1);
+                        }
+                    }
+
+                    if (node.body[i].leadingComments.length === 0) {
+                        delete node.body[i].leadingComments;
+                    }
+                }
+            }
+
             if (node.body.length > 0) {
                 return;
             }