VS IntelliCode-related changes (#30731) (#30737)

* ensure configurePlugin gives a response

* Update tests

* Update baseline

* Enable global plugin loading for external projects

* Fix lint errors

src/harness/client.ts

@@ -90,7 +90,7 @@ namespace ts.server {
             return <T>request;
         }
 
-        private processResponse<T extends protocol.Response>(request: protocol.Request): T {
+        private processResponse<T extends protocol.Response>(request: protocol.Request, expectEmptyBody = false): T {
             let foundResponseMessage = false;
             let response!: T;
             while (!foundResponseMessage) {
@@ -118,7 +118,8 @@ namespace ts.server {
                 throw new Error("Error " + response.message);
             }
 
-            Debug.assert(!!response.body, "Malformed response: Unexpected empty response body.");
+            Debug.assert(expectEmptyBody || !!response.body, "Malformed response: Unexpected empty response body.");
+            Debug.assert(!expectEmptyBody || !response.body, "Malformed response: Unexpected non-empty response body.");
 
             return response;
         }
@@ -696,7 +697,8 @@ namespace ts.server {
         }
 
         configurePlugin(pluginName: string, configuration: any): void {
-            this.processRequest<protocol.ConfigurePluginRequest>("configurePlugin", { pluginName, configuration });
+            const request = this.processRequest<protocol.ConfigurePluginRequest>("configurePlugin", { pluginName, configuration });
+            this.processResponse<protocol.ConfigurePluginResponse>(request, /*expectEmptyBody*/ true);
         }
 
         getIndentationAtPosition(_fileName: string, _position: number, _options: EditorOptions): number {

src/server/editorServices.ts

@@ -1607,7 +1607,8 @@ namespace ts.server {
                 this.documentRegistry,
                 compilerOptions,
                 /*lastFileExceededProgramSize*/ this.getFilenameForExceededTotalSizeLimitForNonTsFiles(projectFileName, compilerOptions, files, externalFilePropertyReader),
-                options.compileOnSave === undefined ? true : options.compileOnSave);
+                options.compileOnSave === undefined ? true : options.compileOnSave,
+                /*projectFilePath*/ undefined, this.currentPluginConfigOverrides);
             project.excludedFiles = excludedFiles;
 
             this.addFilesToNonInferredProject(project, files, externalFilePropertyReader, typeAcquisition);

src/server/project.ts

@@ -1610,7 +1610,8 @@ namespace ts.server {
             compilerOptions: CompilerOptions,
             lastFileExceededProgramSize: string | undefined,
             public compileOnSaveEnabled: boolean,
-            projectFilePath?: string) {
+            projectFilePath?: string,
+            pluginConfigOverrides?: Map<any>) {
             super(externalProjectName,
                 ProjectKind.External,
                 projectService,
@@ -1621,6 +1622,7 @@ namespace ts.server {
                 compileOnSaveEnabled,
                 projectService.host,
                 getDirectoryPath(projectFilePath || normalizeSlashes(externalProjectName)));
+            this.enableGlobalPlugins(this.getCompilerOptions(), pluginConfigOverrides);
         }
 
         updateGraph() {

src/server/protocol.ts

@@ -1392,6 +1392,9 @@ namespace ts.server.protocol {
         arguments: ConfigurePluginRequestArguments;
     }
 
+    export interface ConfigurePluginResponse extends Response {
+    }
+
     /**
      *  Information found in an "open" request.
      */

src/server/session.ts

@@ -2412,6 +2412,7 @@ namespace ts.server {
             },
             [CommandNames.ConfigurePlugin]: (request: protocol.ConfigurePluginRequest) => {
                 this.configurePlugin(request.arguments);
+                this.doOutput(/*info*/ undefined, CommandNames.ConfigurePlugin, request.seq, /*success*/ true);
                 return this.notRequired();
             }
         });

src/testRunner/unittests/tsserver/externalProjects.ts

@@ -50,6 +50,68 @@ namespace ts.projectSystem {
             });
         });
 
+        it("load global plugins", () => {
+            const f1 = {
+                path: "/a/file1.ts",
+                content: "let x = [1, 2];"
+            };
+            const p1 = { projectFileName: "/a/proj1.csproj", rootFiles: [toExternalFile(f1.path)], options: {} };
+
+            const host = createServerHost([f1]);
+            host.require = (_initialPath, moduleName) => {
+                assert.equal(moduleName, "myplugin");
+                return {
+                    module: () => ({
+                        create(info: server.PluginCreateInfo) {
+                            const proxy = Harness.LanguageService.makeDefaultProxy(info);
+                            proxy.getSemanticDiagnostics = filename => {
+                                const prev = info.languageService.getSemanticDiagnostics(filename);
+                                const sourceFile: SourceFile = info.project.getSourceFile(toPath(filename, /*basePath*/ undefined, createGetCanonicalFileName(info.serverHost.useCaseSensitiveFileNames)))!;
+                                prev.push({
+                                    category: DiagnosticCategory.Warning,
+                                    file: sourceFile,
+                                    code: 9999,
+                                    length: 3,
+                                    messageText: `Plugin diagnostic`,
+                                    start: 0
+                                });
+                                return prev;
+                            };
+                            return proxy;
+                        }
+                    }),
+                    error: undefined
+                };
+            };
+            const session = createSession(host, { globalPlugins: ["myplugin"] });
+
+            session.executeCommand(<protocol.OpenExternalProjectsRequest>{
+                seq: 1,
+                type: "request",
+                command: "openExternalProjects",
+                arguments: { projects: [p1] }
+            });
+
+            const projectService = session.getProjectService();
+            checkNumberOfProjects(projectService, { externalProjects: 1 });
+            assert.equal(projectService.externalProjects[0].getProjectName(), p1.projectFileName);
+
+            const handlerResponse = session.executeCommand(<protocol.SemanticDiagnosticsSyncRequest>{
+                seq: 2,
+                type: "request",
+                command: "semanticDiagnosticsSync",
+                arguments: {
+                    file: f1.path,
+                    projectFileName: p1.projectFileName
+                }
+            });
+
+            assert.isDefined(handlerResponse.response);
+            const response = handlerResponse.response as protocol.Diagnostic[];
+            assert.equal(response.length, 1);
+            assert.equal(response[0].text, "Plugin diagnostic");
+        });
+
         it("remove not-listed external projects", () => {
             const f1 = {
                 path: "/a/app.ts",

tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -6748,6 +6748,8 @@ declare namespace ts.server.protocol {
         command: CommandTypes.ConfigurePlugin;
         arguments: ConfigurePluginRequestArguments;
     }
+    interface ConfigurePluginResponse extends Response {
+    }
     /**
      *  Information found in an "open" request.
      */