microsoft-typescript/no-in-operator

src/server/project.ts

@@ -1190,6 +1190,7 @@ namespace ts.server {
                 const pluginModule = pluginModuleFactory({ typescript: ts });
                 const newLS = pluginModule.create(info);
                 for (const k of Object.keys(this.languageService)) {
+                    // eslint-disable-next-line microsoft-typescript/no-in-operator
                     if (!(k in newLS)) {
                         this.projectService.logger.info(`Plugin activation warning: Missing proxied method ${k} in created LS. Patching.`);
                         (newLS as any)[k] = (this.languageService as any)[k];