Merge pull request #7140 from Microsoft/strictNullChecks

Non-nullable types

src/compiler/commandLineParser.ts

@@ -331,6 +331,11 @@ namespace ts {
             name: "noImplicitUseStrict",
             type: "boolean",
             description: Diagnostics.Do_not_emit_use_strict_directives_in_module_output
+        },
+        {
+            name: "strictNullChecks",
+            type: "boolean",
+            description: Diagnostics.Enable_strict_null_checks
         }
     ];