Merge pull request #25377 from Microsoft/addressWesleyFeedback20180702

Use `addRelatedInfo`.

Author: DanielRosenwasser

src/compiler/checker.ts

@@ -19104,8 +19104,10 @@ namespace ts {
             if (importNode && !isImportCall(importNode)) {
                 const sigs = getSignaturesOfType(getTypeOfSymbol(getSymbolLinks(apparentType.symbol).target!), kind);
                 if (!sigs || !sigs.length) return;
-                Debug.assert(!diagnostic.relatedInformation);
-                diagnostic.relatedInformation = [createDiagnosticForNode(importNode, Diagnostics.Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cause_a_failure_at_runtime_Consider_using_a_default_import_or_import_require_here_instead)];
+
+                addRelatedInfo(diagnostic,
+                    createDiagnosticForNode(importNode, Diagnostics.Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cause_a_failure_at_runtime_Consider_using_a_default_import_or_import_require_here_instead)
+                );
             }
         }