npm and error messages

node_modules/babel-traverse/lib/path/comments.js

@@ -0,0 +1,47 @@
+"use strict";
+
+exports.__esModule = true;
+exports.shareCommentsWithSiblings = shareCommentsWithSiblings;
+exports.addComment = addComment;
+exports.addComments = addComments;
+function shareCommentsWithSiblings() {
+  if (typeof this.key === "string") return;
+
+  var node = this.node;
+  if (!node) return;
+
+  var trailing = node.trailingComments;
+  var leading = node.leadingComments;
+  if (!trailing && !leading) return;
+
+  var prev = this.getSibling(this.key - 1);
+  var next = this.getSibling(this.key + 1);
+
+  if (!prev.node) prev = next;
+  if (!next.node) next = prev;
+
+  prev.addComments("trailing", leading);
+  next.addComments("leading", trailing);
+}
+
+function addComment(type, content, line) {
+  this.addComments(type, [{
+    type: line ? "CommentLine" : "CommentBlock",
+    value: content
+  }]);
+}
+
+function addComments(type, comments) {
+  if (!comments) return;
+
+  var node = this.node;
+  if (!node) return;
+
+  var key = type + "Comments";
+
+  if (node[key]) {
+    node[key] = node[key].concat(comments);
+  } else {
+    node[key] = comments;
+  }
+}