Don't change global keyword to namespace in transformModuleDeclaration (#1223)

Author: Andarist

internal/transformers/declarations/transform.go

@@ -1167,7 +1167,7 @@ func (tx *DeclarationTransformer) transformModuleDeclaration(input *ast.ModuleDe
 	tx.needsDeclare = false
 	inner := input.Body
 	keyword := input.Keyword
-	if input.Name() == nil || !ast.IsStringLiteral(input.Name()) {
+	if keyword != ast.KindGlobalKeyword && (input.Name() == nil || !ast.IsStringLiteral(input.Name())) {
 		keyword = ast.KindNamespaceKeyword
 	}
 

testdata/baselines/reference/submodule/compiler/declarationEmitRetainsJsdocyComments.js

@@ -113,12 +113,11 @@ export declare class Foo {
      */
     bar(s: number): void;
 }
-declare namespace global {
+declare global {
     interface ExtFunc {
         /**
         * comment6
         */
         someMethod(collection: any[]): boolean;
     }
 }
-export {};

testdata/baselines/reference/submodule/compiler/declarationEmitRetainsJsdocyComments.js.diff

@@ -38,13 +38,6 @@
 -* comment5
 -*/
 -someMethod: any;
--declare global {
-+declare namespace global {
+ declare global {
      interface ExtFunc {
-         /**
-         * comment6
-@@= skipped -13, +8 lines =@@
-         someMethod(collection: any[]): boolean;
-     }
- }
-+export {};
+         /**

testdata/baselines/reference/submodule/compiler/moduleAugmentationGlobal1.js

@@ -39,9 +39,8 @@ export declare class A {
 //// [f2.d.ts]
 import { A } from "./f1";
 // change the shape of Array<T>
-declare namespace global {
+declare global {
     interface Array<T> {
         getA(): A;
     }
 }
-export {};

testdata/baselines/reference/submodule/compiler/moduleAugmentationGlobal1.js.diff

@@ -12,11 +12,7 @@
  }
  //// [f2.d.ts]
  import { A } from "./f1";
--declare global {
 +// change the shape of Array<T>
-+declare namespace global {
+ declare global {
      interface Array<T> {
-         getA(): A;
-     }
- }
-+export {};
+         getA(): A;

testdata/baselines/reference/submodule/compiler/moduleAugmentationGlobal2.js

@@ -35,7 +35,7 @@ let y = x.getCountAsString().toLowerCase();
 export declare class A {
 }
 //// [f2.d.ts]
-declare namespace global {
+declare global {
     interface Array<T> {
         getCountAsString(): string;
     }

testdata/baselines/reference/submodule/compiler/moduleAugmentationGlobal2.js.diff

@@ -42,7 +42,7 @@ let y = x.getCountAsString().toLowerCase();
 export declare class A {
 }
 //// [f2.d.ts]
-declare namespace global {
+declare global {
     interface Array<T> {
         getCountAsString(): string;
     }

testdata/baselines/reference/submodule/compiler/moduleAugmentationGlobal3.js

@@ -30,14 +30,14 @@ require("./f2");
 
 
 //// [f1.d.ts]
-declare namespace global {
+declare global {
     interface Something {
         x: any;
     }
 }
 export {};
 //// [f2.d.ts]
-declare namespace global {
+declare global {
     interface Something {
         y: any;
     }