undo unrelated change

Author: weswigham

src/compiler/types.ts

@@ -2584,7 +2584,7 @@ namespace ts {
         // Stores a mapping 'external module reference text' -> 'resolved file name' | undefined
         // It is used to resolve module names in the checker.
         // Content of this field should never be used directly - use getResolvedModuleFileName/setResolvedModuleFileName functions instead
-        /* @internal */ resolvedModules: Map<ResolvedModuleFull>;
+        /* @internal */ resolvedModules: Map<ResolvedModuleFull | undefined>;
         /* @internal */ resolvedTypeReferenceDirectiveNames: Map<ResolvedTypeReferenceDirective>;
         /* @internal */ imports: ReadonlyArray<StringLiteralLike>;
         // Identifier only if `declare global`

tests/baselines/reference/importTypeGenericTypes.js

@@ -101,8 +101,12 @@ declare class Bar<T> {
 }
 export { Bar };
 //// [usage.d.ts]
-export declare const x: import("./foo");
-export declare let y: import("./foo2").Bar.I;
+export declare const x: import("./foo")<{
+    x: number;
+}>;
+export declare let y: import("./foo2").Bar.I<{
+    x: number;
+}>;
 export declare class Bar2<T> {
     item: {
         a: string;
@@ -113,59 +117,3 @@ export declare class Bar2<T> {
     constructor(input?: any);
 }
 export declare let shim: typeof import("./foo2");
-
-
-//// [DtsFileErrors]
-
-
-tests/cases/conformance/types/import/usage.d.ts(1,25): error TS2314: Generic type 'Point<T>' requires 1 type argument(s).
-tests/cases/conformance/types/import/usage.d.ts(2,23): error TS2314: Generic type 'I<T>' requires 1 type argument(s).
-
-
-==== tests/cases/conformance/types/import/foo.d.ts (0 errors) ====
-    interface Point<T> {
-        x: number;
-        y: number;
-        data: T;
-    }
-    export = Point;
-    
-==== tests/cases/conformance/types/import/foo2.d.ts (0 errors) ====
-    declare namespace Bar {
-        interface I<T> {
-            a: string;
-            b: number;
-            data: T;
-        }
-    }
-    export declare namespace Baz {
-        interface J<T> {
-            a: number;
-            b: string;
-            data: T;
-        }
-    }
-    declare class Bar<T> {
-        item: Bar.I<T>;
-        constructor(input: Baz.J<T>);
-    }
-    export { Bar };
-    
-==== tests/cases/conformance/types/import/usage.d.ts (2 errors) ====
-    export declare const x: import("./foo");
-                            ~~~~~~~~~~~~~~~
-!!! error TS2314: Generic type 'Point<T>' requires 1 type argument(s).
-    export declare let y: import("./foo2").Bar.I;
-                          ~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2314: Generic type 'I<T>' requires 1 type argument(s).
-    export declare class Bar2<T> {
-        item: {
-            a: string;
-            b: number;
-            c: object;
-            data: T;
-        };
-        constructor(input?: any);
-    }
-    export declare let shim: typeof import("./foo2");
-