Update type-only import semantics to allow type queries (#36092)

* Change type-only semantics to allow type queries

* Don’t error using type-only import in ambient context

* Fix default import

* Fix namespace import

* Update more baselines

* Prevent circular resolution

* Track const enum expression usage

* Update baselines

* Perf tuning 1

* Test commit for perf impact

* Weave type-only alias declaration finding into alias resolution

* Fix namespace import of type-only exported symbols

* type-only exports do not contribute to the module object type

* Update APIs

* Fix enum casing, remove type-only conversion suggestion

* Short circuit type-only checks in resolveEntityName faster

* Fix casing in API

* Remove unused parameter

* Fix error on qualified names in type queries

* Allow type-only imports in computed property names

* Fix computed property names of types and abstract members

* Remove unused util

* Commit missing baselines

* Rename “check” functions so as not to overload the word “check”

tests/cases/conformance/externalModules/typeOnly/ambient.ts

@@ -0,0 +1,9 @@
+// @Filename: /a.ts
+export class A { a!: string }
+
+// @Filename: /b.ts
+import type { A } from './a';
+declare class B extends A {}
+declare namespace ns {
+  class C extends A {}
+}

tests/cases/conformance/externalModules/typeOnly/chained2.ts

@@ -0,0 +1,19 @@
+// @Filename: /a.ts
+class A { a!: string }
+export type { A as default };
+
+// @Filename: /b.ts
+import A from './a';
+import type { default as B } from './a';
+export { A, B };
+
+// @Filename: /c.ts
+import * as types from './b';
+export { types as default };
+
+// @Filename: /d.ts
+import types from './c';
+new types.A();
+new types.B();
+const a: types.A = {};
+const b: types.B = {};

tests/cases/conformance/externalModules/typeOnly/computedPropertyName.ts

@@ -0,0 +1,43 @@
+// @target: esnext
+
+// @Filename: framework-hooks.ts
+export const onInit = Symbol("onInit");
+
+// @Filename: component.ts
+import type { onInit } from "./framework-hooks";
+
+interface Component {
+  [onInit]?(): void;
+}
+
+type T = {
+  [onInit]: any;
+}
+
+const o = {
+  [onInit]: 0 // Error
+};
+
+class C {
+  [onInit]: any; // Error (because class fields)
+}
+
+class D {
+  [onInit] = 0; // Error
+}
+
+class E {
+  [onInit]() {} // Error
+}
+
+abstract class F {
+  abstract [onInit](): void;
+}
+
+class G {
+  declare [onInit]: any;
+}
+
+declare class H {
+  [onInit]: any;
+}

tests/cases/conformance/externalModules/typeOnly/importsNotUsedAsValues_error.ts

@@ -5,6 +5,7 @@
 export default class {}
 export class A {}
 export type B = {};
+export const enum C { One, Two }
 
 // @Filename: /b.ts
 import { A, B } from './a'; // Error
@@ -26,3 +27,17 @@ console.log(a, b);
 
 // @Filename: /e.ts
 import { A, B } from './a'; // noUnusedLocals error only
+
+// @Filename: /f.ts
+import { C } from './a';
+import type { C as D } from './a';
+C.One;
+let c: D = C.Two;
+let d: D.Two = C.Two;
+console.log(c, d);
+
+// @Filename: /g.ts
+import { C } from './a';
+let c: C;
+let d: C.Two;
+console.log(c, d);

tests/cases/conformance/externalModules/typeOnly/namespaceImportTypeQuery.ts

@@ -0,0 +1,9 @@
+// @Filename: /a.ts
+class A {}
+export type { A };
+export class B {};
+
+// @Filename: /b.ts
+import * as types from './a';
+let A: typeof types.A;
+let B: typeof types.B;

tests/cases/conformance/externalModules/typeOnly/namespaceMemberAccess.ts

@@ -0,0 +1,8 @@
+// @Filename: /a.ts
+class A { a!: string }
+export type { A };
+
+// @Filename: /b.ts
+import * as types from './a';
+types.A;
+const { A } = types;

tests/cases/conformance/externalModules/typeOnly/typeQuery.ts

@@ -0,0 +1,6 @@
+// @Filename: /a.ts
+export class A { }
+
+// @Filename: /b.ts
+import type { A } from './a';
+let AConstructor: typeof A;