1

LICENSE

@@ -0,0 +1,25 @@
+Copyright (c) IBM Corp. and LoopBack contributors 2018,2019.
+Node module: @loopback/example-hello-world
+This project is licensed under the MIT License, full text below.
+
+--------
+
+MIT license
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -1 +1,74 @@
-# testnode
+# @loopback/example-hello-world
+
+A simple hello-world application using LoopBack 4!
+
+## Summary
+
+This project shows how to write the simplest LoopBack 4 application possible.
+Check out
+[src/application.ts](https://github.com/loopbackio/loopback-next/blob/master/examples/hello-world/src/application.ts)
+to learn how we configured our application to always respond with "Hello
+World!".
+
+## Prerequisites
+
+Before we can begin, you'll need to make sure you have some things installed:
+
+- [Node.js](https://nodejs.org/en/) at v10 or greater
+
+Additionally, this tutorial assumes that you are comfortable with certain
+technologies, languages and concepts.
+
+- JavaScript (ES6)
+- [npm](https://www.npmjs.com/)
+- [REST](https://en.wikipedia.org/wiki/Representational_state_transfer)
+
+## Installation
+
+1.  Install the new loopback CLI toolkit.
+
+```sh
+npm i -g @loopback/cli
+```
+
+2.  Download the "hello-world" application.
+
+```sh
+lb4 example hello-world
+```
+
+3.  Switch to the directory.
+
+```sh
+cd loopback4-example-hello-world
+```
+
+## Use
+
+Start the app:
+
+```sh
+npm start
+```
+
+The application will start on port `3000`. Use your favourite browser or REST
+client to access any path with a GET request, and watch it return
+`Hello world!`.
+
+## Contributions
+
+- [Guidelines](https://github.com/loopbackio/loopback-next/blob/master/docs/CONTRIBUTING.md)
+- [Join the team](https://github.com/loopbackio/loopback-next/issues/110)
+
+## Tests
+
+Run `npm test` from the root folder.
+
+## Contributors
+
+See
+[all contributors](https://github.com/loopbackio/loopback-next/graphs/contributors).
+
+## License
+
+MIT

package.json

@@ -1,26 +1,61 @@
 {
-  "name": "loopback-app",
-  "version": "1.0.0",
-  "description": "Simple LoopBack 4 application",
+  "name": "@loopback/example-hello-world",
+  "description": "A simple hello-world Application using LoopBack 4",
+  "version": "7.0.7",
+  "keywords": [
+    "loopback",
+    "LoopBack",
+    "example",
+    "tutorial"
+  ],
+  "license": "MIT",
   "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "author": "IBM Corp. and LoopBack contributors",
+  "copyright.owner": "IBM Corp. and LoopBack contributors",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/loopbackio/loopback-next.git",
+    "directory": "examples/hello-world"
+  },
+  "engines": {
+    "node": "18 || 20 || 22"
+  },
   "scripts": {
+    "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "start": "node -r source-map-support/register .",
-    "clean": "rimraf dist",
-    "prestart": "npm run build"
+    "build:watch": "lb-tsc --watch",
+    "clean": "lb-clean *example-hello-world*.tgz dist *.tsbuildinfo package",
+    "verify": "npm pack && tar xf *example-hello-world*.tgz && tree package && npm run clean",
+    "lint": "npm run prettier:check && npm run eslint",
+    "lint:fix": "npm run eslint:fix && npm run prettier:fix",
+    "prettier:cli": "lb-prettier \"**/*.ts\" \"**/*.js\"",
+    "prettier:check": "npm run prettier:cli -- -l",
+    "prettier:fix": "npm run prettier:cli -- --write",
+    "eslint": "lb-eslint --report-unused-disable-directives .",
+    "eslint:fix": "npm run eslint -- --fix",
+    "pretest": "npm run rebuild",
+    "test": "lb-mocha --allow-console-logs \"dist/__tests__/**/*.js\"",
+    "posttest": "npm run lint",
+    "test:dev": "lb-mocha --allow-console-logs dist/__tests__/**/*.js && npm run posttest",
+    "rebuild": "npm run clean && npm run build",
+    "prestart": "npm run rebuild",
+    "start": "node ."
+  },
+  "publishConfig": {
+    "access": "public"
   },
   "dependencies": {
-    "@loopback/boot": "^5.0.0",
-    "@loopback/core": "^5.0.0",
-    "@loopback/rest": "^5.0.0",
-    "@loopback/repository": "^5.0.0",
-    "@loopback/rest-explorer": "^5.0.0",
-    "source-map-support": "^0.5.21"
+    "@loopback/core": "^6.1.4",
+    "@loopback/rest": "^14.0.7",
+    "tslib": "^2.6.3"
   },
   "devDependencies": {
-    "@loopback/build": "^6.0.0",
-    "rimraf": "^5.0.0",
-    "typescript": "^5.2.2"
-  },
-  "license": "MIT"
+    "@loopback/build": "^11.0.6",
+    "@loopback/eslint-config": "^15.0.4",
+    "@loopback/testlab": "^7.0.6",
+    "@types/node": "^16.18.119",
+    "eslint": "^8.57.0",
+    "typescript": "~5.2.2"
+  }
 }

src/__tests__/acceptance/application.acceptance.ts

@@ -0,0 +1,38 @@
+// Copyright IBM Corp. and LoopBack contributors 2019. All Rights Reserved.
+// Node module: @loopback/example-hello-world
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+import {
+  Client,
+  createRestAppClient,
+  expect,
+  givenHttpServerConfig,
+} from '@loopback/testlab';
+import {HelloWorldApplication} from '../../application';
+
+describe('Application', () => {
+  let app: HelloWorldApplication;
+  let client: Client;
+
+  before(givenAnApplication);
+  before(async () => {
+    await app.start();
+    client = createRestAppClient(app);
+  });
+  after(async () => {
+    await app.stop();
+  });
+
+  it('responds with hello world', async () => {
+    const response = await client.get('/').expect(200);
+    expect(response.text).to.eql('Hello World!');
+  });
+
+  function givenAnApplication() {
+    app = new HelloWorldApplication({
+      rest: givenHttpServerConfig(),
+      disableConsoleLog: true,
+    });
+  }
+});

src/application.ts

@@ -1,16 +1,33 @@
-import {ApplicationConfig} from '@loopback/core';
-import {RestApplication} from '@loopback/rest';
-import {RestExplorerBindings} from '@loopback/rest-explorer';
-import {PingController} from './controllers/ping.controller';
+// Copyright IBM Corp. and LoopBack contributors 2018,2020. All Rights Reserved.
+// Node module: @loopback/example-hello-world
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
 
-export class Application extends RestApplication {
+import {ApplicationConfig} from '@loopback/core';
+import {RestApplication, RestServer} from '@loopback/rest';
+export {ApplicationConfig};
+
+export class HelloWorldApplication extends RestApplication {
   constructor(options: ApplicationConfig = {}) {
     super(options);
-    this.projectRoot = __dirname;
-    this.controller(PingController);
-    this.bind(RestExplorerBindings.CONFIG).to({
-      path: '/explorer',
+
+    // In this example project, we configure a sequence that always
+    // returns the same HTTP response: Hello World!
+    // Learn more about the concept of Sequence in our docs:
+    //   http://loopback.io/doc/en/lb4/Sequence.html
+    this.handler(({response}, sequence) => {
+      sequence.send(response, 'Hello World!');
     });
   }
-}
 
+  async start() {
+    await super.start();
+
+    if (!this.options?.disableConsoleLog) {
+      const rest = await this.getServer(RestServer);
+      console.log(
+        `REST server running on port: ${await rest.get('rest.port')}`,
+      );
+    }
+  }
+}

src/controllers/ping.controller.ts

@@ -1,9 +0,0 @@
-import {get} from '@loopback/rest';
-
-export class PingController {
-  @get('/ping')
-  ping(): object {
-    return {message: 'pong'};
-  }
-}
-

src/index.ts

@@ -1,14 +1,30 @@
-import {Application} from './application';
+// Copyright IBM Corp. and LoopBack contributors 2018,2020. All Rights Reserved.
+// Node module: @loopback/example-hello-world
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
 
-export async function main() {
-  const app = new Application();
-  await app.boot();
+import {ApplicationConfig, HelloWorldApplication} from './application';
+
+export async function main(config: ApplicationConfig) {
+  const app = new HelloWorldApplication();
   await app.start();
-  console.log(`Application is running at http://127.0.0.1:3000`);
+  return app;
 }
 
-main().catch(err => {
+if (require.main === module) {
+  // Run the application
+  const config = {
+    rest: {
+      port: +(process.env.PORT ?? 3000),
+      host: process.env.HOST ?? 'localhost',
+      openApiSpec: {
+        // useful when used with OpenAPI-to-GraphQL to locate your application
+        setServersFromRequest: true,
+      },
+    },
+  };
+  main(config).catch(err => {
     console.error('Cannot start the application.', err);
     process.exit(1);
   });
-
+}

src/sequence.ts

@@ -1,35 +0,0 @@
-import {
-  SequenceHandler,
-  FindRoute,
-  ParseParams,
-  InvokeMethod,
-  Send,
-  Reject,
-  RequestContext,
-} from '@loopback/rest';
-
-export class MySequence implements SequenceHandler {
-  constructor(
-    public findRoute: FindRoute,
-    public parseParams: ParseParams,
-    public invoke: InvokeMethod,
-    public send: Send,
-    public reject: Reject,
-  ) {}
-
-  async handle(context: RequestContext): Promise<void> {
-    const {request, response} = context;
-    try {
-      const route = this.findRoute(request);
-
-      const args = await this.parseParams(request, route);
-
-      const result = await this.invoke(route, args);
-
-      this.send(response, result);
-    } catch (error) {
-      this.reject(context, error);
-    }
-  }
-}
-

tsconfig.json

@@ -1,4 +1,24 @@
 {
-  "extends": "./node_modules/@loopback/build/config/tsconfig.common.json",
-  "include": ["src"]
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "@loopback/build/config/tsconfig.common.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src",
+    "composite": true
+  },
+  "include": [
+    "src/**/*",
+    "src/**/*.json"
+  ],
+  "references": [
+    {
+      "path": "../../packages/core/tsconfig.json"
+    },
+    {
+      "path": "../../packages/rest/tsconfig.json"
+    },
+    {
+      "path": "../../packages/testlab/tsconfig.json"
+    }
+  ]
 }