feat: If config value is undefined, throw error

package.json

@@ -1,6 +1,6 @@
 {
   "name": "muffinbot",
-  "version": "4.0.0-pudding.p241018a",
+  "version": "4.0.0-pudding.p241027a",
   "main": "dist/src/index.js",
   "private": true,
   "dependencies": {

src/client.ts

@@ -65,8 +65,13 @@ export default class MuffinBot extends SapphireClient {
   }
 
   public override async login(): Promise<string> {
-    if (container.channel === 'RELEASE') await container.chatBot.train(this)
-    else {
+    if (container.channel === 'RELEASE') {
+      if (!config.train.user_ID)
+        container.logger.info(
+          '[MuffinBot] .env파일에 TRAIN_USER_ID값이 없어서 학습 기능이 꺼졌어요.',
+        )
+      else await container.chatBot.train(this)
+    } else {
       container.logger.info(
         '[MuffinBot] 해당 채널은 RELEASE 채널이 아니라서 학습 기능이 꺼졌습니다.',
       )

src/modules/config.ts

@@ -1,13 +1,22 @@
 import 'dotenv/config'
 
+function getConfigValue(
+  value: 'BOT_TOKEN' | 'BOT_OWNER_ID' | 'BOT_PREFIX',
+) {
+  const configValue = process.env[value]
+  if (!configValue)
+    throw new Error(`.env 파일에서 ${value}값을 찾을 수 없어요.`)
+  return configValue
+}
+
 export default class MAAConfig {
   public readonly bot = {
-    token: process.env.BOT_TOKEN!,
-    owner_ID: process.env.BOT_OWNER_ID!,
-    prefix: process.env.BOT_PREFIX!,
+    token: getConfigValue('BOT_TOKEN'),
+    owner_ID: getConfigValue('BOT_OWNER_ID'),
+    prefix: getConfigValue('BOT_PREFIX'),
   }
 
   public readonly train = {
-    user_ID: process.env.TRAIN_USER_ID!,
+    user_ID: process.env.TRAIN_USER_ID,
   }
 }