Merge pull request #11142 from nchen63/fix-export

Fix `export as namespace` error when compiling with declarations

Author: mhegazy

src/compiler/checker.ts

@@ -2746,8 +2746,9 @@ namespace ts {
 
                     // Type parameters are always visible
                     case SyntaxKind.TypeParameter:
-                    // Source file is always visible
+                    // Source file and namespace export are always visible
                     case SyntaxKind.SourceFile:
+                    case SyntaxKind.NamespaceExportDeclaration:
                         return true;
 
                     // Export assignments do not create name bindings outside the module

tests/baselines/reference/project/declarationsExportNamespace/amd/declarationsExportNamespace.json

@@ -0,0 +1,19 @@
+{
+    "scenario": "declarations_ExportNamespace",
+    "projectRoot": "tests/cases/projects/declarations_ExportNamespace",
+    "inputFiles": [
+        "decl.d.ts",
+        "useModule.ts"
+    ],
+    "declaration": true,
+    "baselineCheck": true,
+    "emittedFiles": [
+        "useModule.js",
+        "useModule.d.ts"
+    ],
+    "resolvedInputFiles": [
+        "lib.d.ts",
+        "decl.d.ts",
+        "useModule.ts"
+    ]
+}

tests/baselines/reference/project/declarationsExportNamespace/amd/useModule.d.ts

@@ -0,0 +1,5 @@
+declare module moduleB {
+    interface IUseModuleA {
+        a: moduleA.A;
+    }
+}

tests/baselines/reference/project/declarationsExportNamespace/amd/useModule.js

@@ -0,0 +1,19 @@
+{
+    "scenario": "declarations_ExportNamespace",
+    "projectRoot": "tests/cases/projects/declarations_ExportNamespace",
+    "inputFiles": [
+        "decl.d.ts",
+        "useModule.ts"
+    ],
+    "declaration": true,
+    "baselineCheck": true,
+    "emittedFiles": [
+        "useModule.js",
+        "useModule.d.ts"
+    ],
+    "resolvedInputFiles": [
+        "lib.d.ts",
+        "decl.d.ts",
+        "useModule.ts"
+    ]
+}

tests/baselines/reference/project/declarationsExportNamespace/node/declarationsExportNamespace.json

@@ -0,0 +1,5 @@
+declare module moduleB {
+    interface IUseModuleA {
+        a: moduleA.A;
+    }
+}

tests/baselines/reference/project/declarationsExportNamespace/node/useModule.d.ts

@@ -0,0 +1,14 @@
+{
+    "scenario": "declarations_ExportNamespace",
+    "projectRoot": "tests/cases/projects/declarations_ExportNamespace",
+    "inputFiles": [
+        "decl.d.ts",
+        "useModule.ts"
+    ],
+    "declaration": true,
+    "baselineCheck": true,
+    "emittedFiles": [
+        "useModule.js",
+        "useModule.d.ts"
+    ]
+}

tests/baselines/reference/project/declarationsExportNamespace/node/useModule.js

@@ -0,0 +1,4 @@
+export interface A {
+    b: number;
+}
+export as namespace moduleA;

tests/cases/project/declarationsExportNamespace.json

@@ -0,0 +1,5 @@
+module moduleB {
+    export interface IUseModuleA {
+        a: moduleA.A;
+    }
+}