@loopback/core

@loopback/core

LoopBack makes it easy to build modern applications that require complex integrations.

Overview

• Fast, small, powerful, extensible core
• Generate real APIs with a single command
• Define your data and endpoints with OpenAPI
• No maintenance of generated code

Installation

$ npm install --save @loopback/core

Basic Use

@loopback/core provides the foundation for your LoopBack app, but unlike previous versions, it no longer contains the implementation for listening servers.

For a typical example of how to create a REST server with your application, see the @loopback/rest package.

Advanced Use

Since @loopback/core is decoupled from the listening server implementation, LoopBack applications are now able to work with any component that provides this functionality.

// index.ts
import {Application} from '@loopback/core';
import {RestComponent} from '@loopback/rest';
import {GrpcComponent} from '@loopback/grpc';

const app = new Application({
  rest: {
    port: 3000,
  },
  grpc: {
    port: 3001,
  },
});
app.component(RestComponent) // REST Server
app.component(GrpcComponent) // GRPC Server

(async function start() {
  // Let's retrieve the bound instances of our servers.
  const rest = await app.getServer<RestServer>('RestServer');
  const grpc = await app.getServer<GrpcServer>('GrpcServer');

  // Define all sorts of bindings here to pass configuration or data
  // between your server instances, define controllers and datasources for them,
  // etc...
  await app.start(); // This automatically spins up all your servers, too!
  console.log(`REST server running on port: ${rest.getSync('rest.port')}`);
  console.log(`GRPC server running on port: ${grpc.getSync('grpc.port')}`);
})();

In the above example, having a GRPC server mounted on your Application could enable communication with other GRPC-enabled microservices, allowing things like dynamic configuration updates.

Contributions

• Guidelines
• Join the team

Tests

Run npm test from the root folder.

Contributors

See all contributors.

License

MIT