fix: use arrow fun, log error, state plugin source

Author: tomv564

src/plugins.ts

@@ -3,7 +3,8 @@ import { Logger, NoopLogger } from './logging';
 import { combinePaths } from './match-files';
 import { InitializationOptions } from './request-type';
 
-// definitions from from TypeScript server/project.ts
+// Based on types and logic from TypeScript server/project.ts @
+// https://github.com/Microsoft/TypeScript/blob/711e890e59e10aa05a43cb938474a3d9c2270429/src/server/project.ts
 
 /**
  * A plugin exports an initialization function, injected with

src/project-manager.ts

@@ -865,7 +865,7 @@ export class ProjectConfiguration {
 		);
 		this.service = ts.createLanguageService(this.host, this.documentRegistry);
 		const pluginLoader = new PluginLoader(this.rootFilePath, this.fs, this.initializationOptions, this.logger);
-		pluginLoader.loadPlugins(options, this.enableProxy.bind(this));
+		pluginLoader.loadPlugins(options, (factory, config) => this.enableProxy(factory, config));
 		this.initialized = true;
 	}
 
@@ -892,7 +892,7 @@ export class ProjectConfiguration {
 			const pluginModule = pluginModuleFactory({ typescript: ts });
 			this.service = pluginModule.create(info);
 		} catch (e) {
-			this.logger.info(`Plugin activation failed: ${e}`);
+			this.logger.error(`Plugin activation failed: ${e}`);
 		}
 	}