SYSTEM | Init

.eslintrc.js

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+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+    'prettier',
+    'prettier/@typescript-eslint',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

.gitignore

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+# compiled output
+/dist
+/node_modules
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+
+.env 
+
+#minio file storage
+/milord
+./milord 
+./milord/*
+.vscode/settings.json

.prettierrc

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+{
+	"tabWidth": 4,
+	"useTabs": true,
+	"singleQuote": true,
+	"semi": false,
+	"printWidth": 100,
+	"bracketSpacing": true,
+	"trailingComma": "all",
+	"arrowParens": "avoid"
+}

README.md

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+<p align="center">
+  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo_text.svg" width="320" alt="Nest Logo" /></a>
+</p>
+
+[travis-image]: https://api.travis-ci.org/nestjs/nest.svg?branch=master
+[travis-url]: https://travis-ci.org/nestjs/nest
+[linux-image]: https://img.shields.io/travis/nestjs/nest/master.svg?label=linux
+[linux-url]: https://travis-ci.org/nestjs/nest
+  
+  <p align="center">A progressive <a href="http://nodejs.org" target="blank">Node.js</a> framework for building efficient and scalable server-side applications, heavily inspired by <a href="https://angular.io" target="blank">Angular</a>.</p>
+    <p align="center">
+<a href="https://www.npmjs.com/~nestjscore"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
+<a href="https://www.npmjs.com/~nestjscore"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
+<a href="https://www.npmjs.com/~nestjscore"><img src="https://img.shields.io/npm/dm/@nestjs/core.svg" alt="NPM Downloads" /></a>
+<a href="https://travis-ci.org/nestjs/nest"><img src="https://api.travis-ci.org/nestjs/nest.svg?branch=master" alt="Travis" /></a>
+<a href="https://travis-ci.org/nestjs/nest"><img src="https://img.shields.io/travis/nestjs/nest/master.svg?label=linux" alt="Linux" /></a>
+<a href="https://coveralls.io/github/nestjs/nest?branch=master"><img src="https://coveralls.io/repos/github/nestjs/nest/badge.svg?branch=master#5" alt="Coverage" /></a>
+<a href="https://gitter.im/nestjs/nestjs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=body_badge"><img src="https://badges.gitter.im/nestjs/nestjs.svg" alt="Gitter" /></a>
+<a href="https://opencollective.com/nest#backer"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
+<a href="https://opencollective.com/nest#sponsor"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
+  <a href="https://paypal.me/kamilmysliwiec"><img src="https://img.shields.io/badge/Donate-PayPal-dc3d53.svg"/></a>
+  <a href="https://twitter.com/nestframework"><img src="https://img.shields.io/twitter/follow/nestframework.svg?style=social&label=Follow"></a>
+</p>
+  <!--[![Backers on Open Collective](https://opencollective.com/nest/backers/badge.svg)](https://opencollective.com/nest#backer)
+  [![Sponsors on Open Collective](https://opencollective.com/nest/sponsors/badge.svg)](https://opencollective.com/nest#sponsor)-->
+
+## Description
+
+[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
+
+## Installation
+
+```bash
+$ npm install
+```
+
+## Running the app
+
+```bash
+# development
+$ npm run start
+
+# watch mode
+$ npm run start:dev
+
+# production mode
+$ npm run start:prod
+```
+
+## Test
+
+```bash
+# unit tests
+$ npm run test
+
+# e2e tests
+$ npm run test:e2e
+
+# test coverage
+$ npm run test:cov
+```
+
+## 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).
+
+## Stay in touch
+
+- Author - [Kamil Myśliwiec](https://kamilmysliwiec.com)
+- Website - [https://nestjs.com](https://nestjs.com/)
+- Twitter - [@nestframework](https://twitter.com/nestframework)
+
+## License
+
+  Nest is [MIT licensed](LICENSE).

nest-cli.json

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+{
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src"
+}

package.json

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+{
+  "name": "api-taskme",
+  "version": "0.0.1",
+  "description": "",
+  "author": "",
+  "private": true,
+  "license": "UNLICENSED",
+  "scripts": {
+    "prebuild": "rimraf dist",
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start": "nest start",
+    "start:dev": "nest start --watch",
+    "start:debug": "nest start --debug --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json"
+  },
+  "dependencies": {
+    "@nestjs/common": "^7.0.0",
+    "@nestjs/core": "^7.0.0",
+    "@nestjs/platform-express": "^7.0.0",
+    "@nestjs/typeorm": "^8.0.1",
+    "dotenv": "^10.0.0",
+    "postgres": "^1.0.2",
+    "reflect-metadata": "^0.1.13",
+    "rimraf": "^3.0.2",
+    "rxjs": "^6.5.4",
+    "typeorm": "^0.2.36"
+  },
+  "devDependencies": {
+    "@nestjs/cli": "^7.0.0",
+    "@nestjs/schematics": "^7.0.0",
+    "@nestjs/testing": "^7.0.0",
+    "@types/express": "^4.17.3",
+    "@types/jest": "26.0.10",
+    "@types/node": "^13.9.1",
+    "@types/supertest": "^2.0.8",
+    "@typescript-eslint/eslint-plugin": "3.9.1",
+    "@typescript-eslint/parser": "3.9.1",
+    "eslint": "7.7.0",
+    "eslint-config-prettier": "^6.10.0",
+    "eslint-plugin-import": "^2.20.1",
+    "jest": "26.4.2",
+    "prettier": "^1.19.1",
+    "supertest": "^4.0.2",
+    "ts-jest": "26.2.0",
+    "ts-loader": "^6.2.1",
+    "ts-node": "9.0.0",
+    "tsconfig-paths": "^3.9.0",
+    "typescript": "^3.7.4"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".spec.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { $config } from './config';
+import { UsersModule } from './domain/users/users.module';
+import { DatabaseModule } from './libs';
+
+const imports = [
+  UsersModule.forRoot('some'),
+  DatabaseModule.forRoot(...$config.getDatabaseConfig()),
+];
+
+@Module({ imports })
+export class AppModule {}

src/config/index.ts

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+import { DatabaseModule } from 'src/libs';
+
+const getDatabaseConfig = (): Parameters<typeof DatabaseModule['forRoot']> => {
+  return [
+    {
+      type: process.env.DATABASE_TYPE as 'postgres',
+      host: process.env.DATABASE_HOST,
+      port: Number(process.env.DATABASE_PORT),
+      username: process.env.DATABASE_USER,
+      password: process.env.DATABASE_PASS,
+      database: process.env.DATABASE_DB,
+      synchronize: true,
+    },
+    [],
+  ];
+};
+
+export const $config = {
+  getDatabaseConfig,
+};

src/domain/users/entities/index.ts

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+import { User } from './user.entity';
+
+export const USERS_ENTITIES = [User];
+
+export { User };

src/domain/users/entities/user.entity.ts

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+import { BaseEntity, Entity, PrimaryGeneratedColumn } from 'typeorm'
+
+@Entity('users')
+export class User extends BaseEntity {
+	@PrimaryGeneratedColumn()
+	id: number
+}

src/domain/users/users.module.ts

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+import { DynamicModule, Module } from '@nestjs/common';
+
+@Module({})
+export class UsersModule {
+  static options: any;
+
+  static forRoot(options: any): DynamicModule {
+    UsersModule.options = options;
+
+    return {
+      module: UsersModule,
+    };
+  }
+
+  static forFeature(): DynamicModule {
+    console.log(UsersModule.options);
+    return {
+      module: UsersModule,
+    };
+  }
+}

src/libs/database/database.module.ts

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+import { DynamicModule, Global, Module } from '@nestjs/common';
+import { UsersModule } from 'src/domain/users/users.module';
+import { ConnectionOptions, createConnection, EntitySchema } from 'typeorm';
+
+@Global()
+@Module({})
+export class DatabaseModule {
+  static forRoot(
+    options: Partial<ConnectionOptions>,
+    entities: EntitySchema[],
+  ): DynamicModule {
+    return {
+      module: DatabaseModule,
+      imports: [UsersModule.forFeature()],
+      providers: [
+        {
+          provide: 'DATABASE_CONNECTION',
+          useFactory: async () => {
+            return await createConnection({
+              ...options,
+              entities,
+            } as ConnectionOptions);
+          },
+        },
+      ],
+    };
+  }
+}

src/libs/database/helpers/get-repository.helper.ts

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+import { Connection } from 'typeorm'
+
+export const getRepositoryHelper = (name, entity) => {
+	return {
+		provide: name,
+		useFactory: (connection: Connection) => connection.getRepository(entity),
+		inject: ['DATABASE_CONNECTION'],
+	}
+}

src/libs/database/helpers/index.ts

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+export * from './get-repository.helper'

src/libs/database/index.ts

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+export * from './database.module';
+
+export * from './helpers'

src/libs/database/interfaces/database-module-params.interfaces.ts

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+import { ConnectionOptions } from 'typeorm';
+
+export interface IDatabaseAsyncModuleParams {
+  imports?: any[];
+  useFactory: (...args: any[]) => Promise<Partial<ConnectionOptions>>;
+  inject: any[];
+}

src/libs/database/interfaces/index.ts

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+export * from './database-module-params.interfaces';

src/libs/index.ts

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+export * from './database';

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+
+import * as dotenv from 'dotenv';
+
+dotenv.config();
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  await app.listen(3000);
+}
+bootstrap();

test/app.e2e-spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { AppModule } from './../src/app.module';
+
+describe('AppController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/ (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/')
+      .expect(200)
+      .expect('Hello World!');
+  });
+});

test/jest-e2e.json

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+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}

tsconfig.build.json

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+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "es2017",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true
+  }
+}