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src/compiler/checker.ts

@@ -11205,6 +11205,8 @@ namespace ts {
                         seen = c === node;
                     }
                 });
+                // We may be here because of some extra junk between overloads that could not be parsed into a valid node.
+                // In this case the subsequent node is not really consecutive (.pos !== node.end), and we must ignore it here.
                 if (subsequentNode && subsequentNode.pos === node.end) {
                     if (subsequentNode.kind === node.kind) {
                         const errorNode: Node = (<FunctionLikeDeclaration>subsequentNode).name || subsequentNode;