Rohit3230/chat-bot-NodeJs-NestJs-Angular-MEANStack

A progressive Node.js framework for building efficient and scalable server-side applications, heavily inspired by Angular.

Description

Nest framework TypeScript starter repository.

Installation

$ npm install

Running the app

# development
$ npm run start

# watch mode
$ npm run start:dev

# production mode
$ npm run start:prod

Test

# 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.

Stay in touch

• Author - Kamil Myśliwiec
• Website - https://nestjs.com
• Twitter - @nestframework

License

Nest is MIT licensed.

IMP Thing to know

Source From:-
https://docs.nestjs.com/recipes/hot-reload

---

For Apply Hot-Reload functionality Follow below points: Install Required packages by following command.
npm i --save-dev webpack-node-externals start-server-webpack-plugin

---

Create a new file named with: webpack-hmr.config.js with below code:
const webpack = require('webpack'); const nodeExternals = require('webpack-node-externals'); const StartServerPlugin = require('start-server-webpack-plugin');

module.exports = function(options) {
  return {
    ...options,
    entry: ['webpack/hot/poll?100', options.entry],
    watch: true,
    externals: [
      nodeExternals({
        allowlist: ['webpack/hot/poll?100'],
      }),
    ],
    plugins: [
      ...options.plugins,
      new webpack.HotModuleReplacementPlugin(),
      new webpack.WatchIgnorePlugin([/\.js$/, /\.d\.ts$/]),
      new StartServerPlugin({ name: options.output.filename }),
    ],
  };
};

---

Add Code in main.ts file:-

declare const module: any;

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  await app.listen(3000);

  if (module.hot) {
    module.hot.accept();
    module.hot.dispose(() => app.close());
  }
}
bootstrap();

---

change in package.json file:-

"start:dev": "nest build --webpack --webpackPath webpack-hmr.config.js"

---

Use command:

npm run start:dev