refactor: server-env 리드미, jsdoc 작성

packages/server/env/README.md

@@ -1 +1,66 @@
 # env
+
+Get process.env props
+
+## Installation
+
+```bash
+$ npm i @awesome-dev/server-env
+```
+
+## Usage
+
+```bash
+export interface CustomConfigOption {
+  userId: string;
+  userPassword: string;
+  jwtSecretKey: string;
+}
+
+@Injectable()
+export class CustomConfig {
+  public constructor(private readonly option: CustomConfigOption) {}
+
+  getOption(key: keyof CustomConfigOption) {
+    return this.option[key];
+  }
+}
+```
+
+```bash
+@Module({})
+export class CustomModule {
+  static forRoot(): DynamicModule {
+    const config = loadEnv([
+      'USER_ID',
+      'USER_PASSWORD',
+      'JWT_SECRET_KEY',
+    ] as const);
+
+    const ConfigProvider: Provider = {
+      provide: CustomConfig,
+      useFactory: () =>
+        new CustomConfig({
+          userId: config.USER_ID,
+          userPassword: config.USER_PASSWORD,
+          jwtSecretKey: config.JWT_SECRET_KEY,
+        }),
+    };
+
+    return {
+      module: CustomModule,
+      controllers: [],
+      providers: [ConfigProvider],
+      exports: [ConfigProvider],
+    };
+  }
+}
+```
+
+## Support
+
+Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
+
+## License
+
+Nest is [MIT licensed](LICENSE).

packages/server/env/src/loadEnv.ts

@@ -2,6 +2,9 @@ import { config } from 'dotenv';
 
 config();
 
+/**
+ * process.env 파일의 props를 가져옵니다.
+ */
 export function loadEnv<K extends string>(propNames: readonly K[], strict = true) {
   const env: Record<string, unknown> = {};