Allow only package names as plugin names

src/server/project.ts

@@ -1581,6 +1581,10 @@ namespace ts.server {
 
         protected enablePlugin(pluginConfigEntry: PluginImport, searchPaths: string[], pluginConfigOverrides: Map<any> | undefined) {
             this.projectService.logger.info(`Enabling plugin ${pluginConfigEntry.name} from candidate paths: ${searchPaths.join(",")}`);
+            if (parsePackageName(pluginConfigEntry.name).rest) {
+                this.projectService.logger.info(`Skipped loading plugin ${pluginConfigEntry.name} because only package name is allowed plugin name`);
+                return;
+            }
 
             const log = (message: string) => this.projectService.logger.info(message);
             let errorLogs: string[] | undefined;

src/testRunner/tsconfig.json

@@ -183,6 +183,7 @@
         "unittests/tsserver/openFile.ts",
         "unittests/tsserver/packageJsonInfo.ts",
         "unittests/tsserver/partialSemanticServer.ts",
+        "unittests/tsserver/plugins.ts",
         "unittests/tsserver/projectErrors.ts",
         "unittests/tsserver/projectReferenceCompileOnSave.ts",
         "unittests/tsserver/projectReferenceErrors.ts",

src/testRunner/unittests/tsserver/plugins.ts

@@ -0,0 +1,50 @@
+namespace ts.projectSystem {
+    describe("unittests:: tsserver:: plugins loading", () => {
+        function createHostWithPlugin(files: readonly File[]) {
+            const host = createServerHost(files);
+            const pluginsLoaded: string[] = [];
+            host.require = (_initialPath, moduleName) => {
+                pluginsLoaded.push(moduleName);
+                return {
+                    module: () => ({
+                        create(info: server.PluginCreateInfo) {
+                            return Harness.LanguageService.makeDefaultProxy(info);
+                        }
+                    }),
+                    error: undefined
+                };
+            };
+            return { host, pluginsLoaded };
+        }
+
+        it("With local plugins", () => {
+            const expectedToLoad = ["@myscoped/plugin", "unscopedPlugin"];
+            const notToLoad = ["../myPlugin", "myPlugin/../malicious"];
+            const aTs: File = { path: "/a.ts", content: `class c { prop = "hello"; foo() { return this.prop; } }` };
+            const tsconfig: File = {
+                path: "/tsconfig.json",
+                content: JSON.stringify({
+                    compilerOptions: { plugins: [...expectedToLoad, ...notToLoad].map(name => ({ name })) }
+                })
+            };
+            const { host, pluginsLoaded } = createHostWithPlugin([aTs, tsconfig, libFile]);
+            const service = createProjectService(host);
+            service.openClientFile(aTs.path);
+            assert.deepEqual(pluginsLoaded, expectedToLoad);
+        });
+
+        it("With global plugins", () => {
+            const expectedToLoad = ["@myscoped/plugin", "unscopedPlugin"];
+            const notToLoad = ["../myPlugin", "myPlugin/../malicious"];
+            const aTs: File = { path: "/a.ts", content: `class c { prop = "hello"; foo() { return this.prop; } }` };
+            const tsconfig: File = {
+                path: "/tsconfig.json",
+                content: "{}"
+            };
+            const { host, pluginsLoaded } = createHostWithPlugin([aTs, tsconfig, libFile]);
+            const service = createProjectService(host, { globalPlugins: [...expectedToLoad, ...notToLoad] });
+            service.openClientFile(aTs.path);
+            assert.deepEqual(pluginsLoaded, expectedToLoad);
+        });
+    });
+}