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

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

LoopBack Next is a work in progress, the public API is frequently changed in backwards-incompatible ways. See Upcoming-Releases on wiki for more details.

Make sure you have the following installed:

• Node.js >= 7.0.0
• TypeScript >= 2.0.0 npm i -g typescript
• TypeScript Node >= 3.0.0 npm i -g ts-node

Then in your Node.js project root, run:

npm install -S @loopback/core

Make sure you set "target": "es6" in your compiler options in your tsconfig.json if you're using a TypeScript project. See Installation for detailed information.

A basic controller:

export class UserController {
  async getUserByName(username: string): Promise<UserResponse> {
    const users = new UserRepository();
    const user = await users.findOne({where: {username: username}});
    if (!user) {
      throw createHttpError.NotFound(`User ${username} not found.`);
    }
    return new UserResponse(user);
  }
}

See loopback-next-example for more.

• API documentation
• FAQ
• LoopBack 3 vs LoopBack 4
• Tutorials and examples

Ritchie Martori	Raymond Feng	Miroslav Bajtos	Rand McKinney	Simon Ho

See all contributors.

• Guidelines
• Join the team

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