1번째 수정..

src/auth/auth.module.ts

@@ -1,23 +1,24 @@
 //참고 : https://velog.io/@junguksim/NestJS-노트-3-Authentication
 //       https://docs.nestjs.com/security/authorization
 
-import { Module } from '@nestjs/common';
-import { PassportModule } from '@nestjs/passport';
-import { UsersModule } from 'src/user/user.module';
-import { AuthService } from './auth.service';
-import { JwtModule } from '@nestjs/jwt';
-import { jwtConstants } from './guards/constants';
-import { AuthController } from './auth.controller';
-import { LocalStrategy } from './guards/local.strategy';
-import { JwtStrategy } from './guards/jwt.strategy';
+import { Module } from '@nestjs/common'
+import { PassportModule } from '@nestjs/passport'
+import { UsersModule } from 'src/user/user.module'
+import { AuthService } from './auth.service'
+import { JwtModule } from '@nestjs/jwt'
+import { jwtConstants } from './guards/constants'
+import { AuthController } from './auth.controller'
+import { LocalStrategy } from './guards/local.strategy'
+import { JwtStrategy } from './guards/jwt.strategy'
 
 @Module({
   imports: [
-    UsersModule, PassportModule,
+    UsersModule,
+    PassportModule,
     JwtModule.register({
       secret: jwtConstants.secret,
-      signOptions: { expiresIn: '60s' },
-    }),
+      signOptions: { expiresIn: jwtConstants.expiresIn }
+    })
   ],
   providers: [AuthService, LocalStrategy, JwtStrategy],
   exports: [AuthService],

src/auth/guards/constants.ts

@@ -1,3 +1,4 @@
 export const jwtConstants = {
   secret: 'security-key',
-}
+  expiresIn: '60s'
+}