From a2f61a8041f0e539f656435aaaf956500236fb60 Mon Sep 17 00:00:00 2001
From: Vladimir Matveev <vladima@microsoft.com>
Date: Tue, 21 Feb 2017 10:27:50 -0800
Subject: [PATCH] handle the case when conversion of tsconfig.json failed
 (#14160)

---
 .../unittests/tsserverProjectSystem.ts        | 27 +++++++++++++++++++
 src/server/editorServices.ts                  |  4 +--
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/src/harness/unittests/tsserverProjectSystem.ts b/src/harness/unittests/tsserverProjectSystem.ts
index 92ec0b4ee0e..7446cc84deb 100644
--- a/src/harness/unittests/tsserverProjectSystem.ts
+++ b/src/harness/unittests/tsserverProjectSystem.ts
@@ -3035,6 +3035,33 @@ namespace ts.projectSystem {
             const inferredProject = projectService.inferredProjects[0];
             assert.isTrue(inferredProject.containsFile(<server.NormalizedPath>file1.path));
         });
+
+        it("should be able to handle @types if input file list is empty", () => {
+            const f = {
+                path: "/a/app.ts",
+                content: "let x = 1"
+            };
+            const config = {
+                path: "/a/tsconfig.json",
+                content: JSON.stringify({
+                    compiler: {},
+                    files: []
+                })
+            };
+            const t1 = {
+                path: "/a/node_modules/@types/typings/index.d.ts",
+                content: `export * from "./lib"`
+            };
+            const t2 = {
+                path: "/a/node_modules/@types/typings/lib.d.ts",
+                content: `export const x: number`
+            };
+            const host = createServerHost([f, config, t1, t2], { currentDirectory: getDirectoryPath(f.path) });
+            const projectService = createProjectService(host);
+
+            projectService.openClientFile(f.path);
+            projectService.checkNumberOfProjects({ configuredProjects: 1, inferredProjects: 1 });
+        });
     });
 
     describe("reload", () => {
diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index 36aa3939c83..d0535e2f528 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -948,9 +948,9 @@ namespace ts.server {
 
         private openConfigFile(configFileName: NormalizedPath, clientFileName?: string): OpenConfigFileResult {
             const conversionResult = this.convertConfigFileContentToProjectOptions(configFileName);
-            const projectOptions = conversionResult.success
+            const projectOptions: ProjectOptions = conversionResult.success
                 ? conversionResult.projectOptions
-                : { files: [], compilerOptions: {} };
+                : { files: [], compilerOptions: {}, typeAcquisition: { enable: false } };
             const project = this.createAndAddConfiguredProject(configFileName, projectOptions, conversionResult.configFileErrors, clientFileName);
             return {
                 success: conversionResult.success,