fourslash tests fixed

Author: craigphicks

src/harness/fourslashInterfaceImpl.ts

@@ -1123,6 +1123,7 @@ export namespace Completion {
         interfaceEntry("StringConstructor"),
         varEntry("Boolean"),
         interfaceEntry("BooleanConstructor"),
+        interfaceEntry("BooleanConverter"),
         varEntry("Number"),
         interfaceEntry("NumberConstructor"),
         interfaceEntry("TemplateStringsArray"),