4 files changed, 23 insertions, 22 deletions
diff --git a/src/utils/dependencyInfo.ts b/src/utils/dependencyInfo.ts
index 8c3014d302..818fa3136c 100644
--- a/src/utils/dependencyInfo.ts
+++ b/src/utils/dependencyInfo.ts
@@ -2,19 +2,19 @@ import Logger from './logger';
 import { execSync } from 'child_process';
 
 export default class {
-	logger: Logger;
+	private logger: Logger;
 
 	constructor() {
 		this.logger = new Logger('Deps');
 	}
 
-	showAll(): void {
+	public showAll(): void {
 		this.show('MongoDB', 'mongo --version', x => x.match(/^MongoDB shell version:? (.*)\r?\n/));
 		this.show('Redis', 'redis-server --version', x => x.match(/v=([0-9\.]*)/));
 		this.show('GraphicsMagick', 'gm -version', x => x.match(/^GraphicsMagick ([0-9\.]*) .*/));
 	}
 
-	show(serviceName: string, command: string, transform: (x: string) => RegExpMatchArray): void {
+	public show(serviceName: string, command: string, transform: (x: string) => RegExpMatchArray): void {
 		try {
 			// ステータス0以外のときにexecSyncはstderrをコンソール上に出力してしまうので
 			// プロセスからのstderrをすべて無視するように stdio オプションをセット
diff --git a/src/utils/environmentInfo.ts b/src/utils/environmentInfo.ts
index f8508d1d8b..e6084cde0e 100644
--- a/src/utils/environmentInfo.ts
+++ b/src/utils/environmentInfo.ts
@@ -1,10 +1,11 @@
 import Logger from './logger';
 
 export default class {
-	static show(): void {
+	public static show(): void {
 		const env = process.env.NODE_ENV;
-		let logger = new Logger('Env');
+		const logger = new Logger('Env');
 		logger.info(typeof env == 'undefined' ? 'NODE_ENV is not set' : `NODE_ENV: ${env}`);
+
 		if (env !== 'production') {
 			logger.warn('The environment is not in production mode');
 			logger.warn('Do not use for production purpose');
diff --git a/src/utils/logger.ts b/src/utils/logger.ts
index ebfa3c34fe..ecfacbc952 100644
--- a/src/utils/logger.ts
+++ b/src/utils/logger.ts
@@ -11,43 +11,43 @@ function toLevelColor(level: LogLevel): chalk.ChalkStyle {
 }
 
 export default class Logger {
-	domain: string;
+	private domain: string;
 
-	static log(level: LogLevel, message: string): void {
-		let color = toLevelColor(level);
-		let time = (new Date()).toLocaleTimeString('ja-JP');
+	constructor(domain: string) {
+		this.domain = domain;
+	}
+
+	public static log(level: LogLevel, message: string): void {
+		const color = toLevelColor(level);
+		const time = (new Date()).toLocaleTimeString('ja-JP');
 		console.log(`[${time} ${color.bold(level.toUpperCase())}]: ${message}`);
 	}
 
-	static error(message: string): void {
+	public static error(message: string): void {
 		Logger.log('Error', message);
 	}
 
-	static warn(message: string): void {
+	public static warn(message: string): void {
 		Logger.log('Warn', message);
 	}
 
-	static info(message: string): void {
+	public static info(message: string): void {
 		Logger.log('Info', message);
 	}
 
-	constructor(domain: string) {
-		this.domain = domain;
-	}
-
-	log(level: LogLevel, message: string): void {
+	public log(level: LogLevel, message: string): void {
 		Logger.log(level, `[${this.domain}] ${message}`);
 	}
 
-	error(message: string): void {
+	public error(message: string): void {
 		this.log('Error', message);
 	}
 
-	warn(message: string): void {
+	public warn(message: string): void {
 		this.log('Warn', message);
 	}
 
-	info(message: string): void {
+	public info(message: string): void {
 		this.log('Info', message);
 	}
 }
diff --git a/src/utils/machineInfo.ts b/src/utils/machineInfo.ts
index acae773743..0c189cc7ca 100644
--- a/src/utils/machineInfo.ts
+++ b/src/utils/machineInfo.ts
@@ -2,10 +2,10 @@ import * as os from 'os';
 import Logger from './logger';
 
 export default class {
-	static show(): void {
+	public static show(): void {
 		const totalmem = (os.totalmem() / 1024 / 1024 / 1024).toFixed(1);
 		const freemem = (os.freemem() / 1024 / 1024 / 1024).toFixed(1);
-		let logger = new Logger('Machine');
+		const logger = new Logger('Machine');
 		logger.info(`Hostname: ${os.hostname()}`);
 		logger.info(`Platform: ${process.platform}`);
 		logger.info(`Architecture: ${process.arch}`);