emit import declarations without import clause in .d.ts files

src/compiler/declarationEmitter.ts

@@ -698,10 +698,6 @@ namespace ts {
         }
 
         function writeImportDeclaration(node: ImportDeclaration) {
-            if (!node.importClause && !(node.flags & NodeFlags.Export)) {
-                // do not write non-exported import declarations that don't have import clauses
-                return;
-            }
             emitJsDocComments(node);
             if (node.flags & NodeFlags.Export) {
                 write("export ");

tests/baselines/reference/es6ImportWithoutFromClause.js

@@ -17,3 +17,4 @@ import "es6ImportWithoutFromClause_0";
 //// [es6ImportWithoutFromClause_0.d.ts]
 export declare var a: number;
 //// [es6ImportWithoutFromClause_1.d.ts]
+import "es6ImportWithoutFromClause_0";

tests/baselines/reference/es6ImportWithoutFromClauseAmd.js

@@ -36,3 +36,5 @@ export declare var a: number;
 //// [es6ImportWithoutFromClauseAmd_1.d.ts]
 export declare var b: number;
 //// [es6ImportWithoutFromClauseAmd_2.d.ts]
+import "es6ImportWithoutFromClauseAmd_0";
+import "es6ImportWithoutFromClauseAmd_2";

tests/baselines/reference/es6ImportWithoutFromClauseInEs5.js

@@ -18,3 +18,4 @@ require("es6ImportWithoutFromClauseInEs5_0");
 //// [es6ImportWithoutFromClauseInEs5_0.d.ts]
 export declare var a: number;
 //// [es6ImportWithoutFromClauseInEs5_1.d.ts]
+import "es6ImportWithoutFromClauseInEs5_0";

tests/baselines/reference/es6ImportWithoutFromClauseNonInstantiatedModule.js

@@ -17,3 +17,4 @@ import "es6ImportWithoutFromClauseNonInstantiatedModule_0";
 export interface i {
 }
 //// [es6ImportWithoutFromClauseNonInstantiatedModule_1.d.ts]
+import "es6ImportWithoutFromClauseNonInstantiatedModule_0";

tests/baselines/reference/moduleAugmentationCollidingNamesInAugmentation1.js

@@ -73,3 +73,5 @@ declare module "./observable" {
 }
 export {};
 //// [main.d.ts]
+import "./map1";
+import "./map2";

tests/baselines/reference/moduleAugmentationDeclarationEmit1.js

@@ -66,3 +66,4 @@ declare module "./observable" {
 }
 export {};
 //// [main.d.ts]
+import "./map";

tests/baselines/reference/moduleAugmentationDeclarationEmit2.js

@@ -71,3 +71,4 @@ declare module "./observable" {
 }
 export {};
 //// [main.d.ts]
+import "./map";

tests/baselines/reference/moduleAugmentationExtendAmbientModule2.js

@@ -63,3 +63,4 @@ declare module "observable" {
 export {};
 //// [main.d.ts]
 /// <reference path="observable.d.ts" />
+import "./map";

tests/baselines/reference/moduleAugmentationGlobal3.js

@@ -50,3 +50,4 @@ declare global  {
 }
 export {};
 //// [f3.d.ts]
+import "./f2";

tests/baselines/reference/moduleAugmentationGlobal4.js

@@ -45,3 +45,5 @@ declare global  {
 export {  };
 export {};
 //// [f3.d.ts]
+import "./f1";
+import "./f2";

tests/baselines/reference/moduleAugmentationGlobal5.js

@@ -32,3 +32,5 @@ require("B");
 //// [f3.d.ts]
 /// <reference path="f1.d.ts" />
 /// <reference path="f2.d.ts" />
+import "A";
+import "B";

tests/baselines/reference/moduleAugmentationImportsAndExports1.js

@@ -69,3 +69,4 @@ declare module "./f1" {
     }
 }
 //// [f4.d.ts]
+import "./f3";

tests/baselines/reference/moduleAugmentationImportsAndExports2.js

@@ -74,3 +74,4 @@ export declare class B {
     n: number;
 }
 //// [f4.d.ts]
+import "./f3";

tests/baselines/reference/moduleAugmentationImportsAndExports3.js

@@ -72,3 +72,4 @@ export declare class B {
     n: number;
 }
 //// [f4.d.ts]
+import "./f3";

tests/baselines/reference/moduleAugmentationImportsAndExports5.js

@@ -76,3 +76,4 @@ export declare class B {
     n: number;
 }
 //// [f4.d.ts]
+import "./f3";

tests/baselines/reference/moduleAugmentationImportsAndExports6.js

@@ -95,3 +95,4 @@ declare module "./f1" {
     }
 }
 //// [f4.d.ts]
+import "./f3";

tests/baselines/reference/moduleAugmentationInAmbientModule5.js

@@ -33,3 +33,4 @@ var y = x.getA().x;
 
 //// [f.d.ts]
 /// <reference path="array.d.ts" />
+import "array";

tests/baselines/reference/moduleAugmentationsBundledOutput1.js

@@ -139,4 +139,6 @@ declare module "m4" {
     }
 }
 declare module "test" {
+    import "m2";
+    import "m4";
 }

tests/baselines/reference/moduleAugmentationsImports1.js

@@ -101,4 +101,5 @@ declare module "d" {
     }
 }
 declare module "main" {
+    import "d";
 }

tests/baselines/reference/moduleAugmentationsImports2.js

@@ -111,4 +111,6 @@ declare module "e" {
     }
 }
 declare module "main" {
+    import "d";
+    import "e";
 }

tests/baselines/reference/moduleAugmentationsImports3.js

@@ -98,4 +98,6 @@ declare module "e" {
     }
 }
 declare module "main" {
+    import "D";
+    import "e";
 }

tests/baselines/reference/moduleAugmentationsImports4.js

@@ -87,4 +87,6 @@ declare module "b" {
     }
 }
 declare module "main" {
+    import "D";
+    import "E";
 }