verbose module resolution

src/compiler/commandLineParser.ts

@@ -302,6 +302,11 @@ namespace ts {
             type: "object",
             isTSConfigOnly: true
         },
+        {
+            name: "traceModuleResolution",
+            type: "boolean",
+            description: Diagnostics.Enable_tracing_of_the_module_resolution_process
+        },
         {
             name: "allowJs",
             type: "boolean",