Folk.JS

Folk.JS is a simple Dependency Injection (DI) Container for Javascript/Node.

Table of Contents

• Installation
• Usage
• API
• Author

Installation

Install with npm

npm install folkjs --save

Or yarn

yarn add folkjs

Usage

Folk.JS was created to be simple. At minimun, At minimum, you need to do 3 things:

• Create a container
• Register some modules in it
• Resolve and use!

const Container = require('folkjs');

// Create a DI container
const container = Container();

// Create a factory function
// Argument is the current Container resolver
const makeUserService = ({ db }) => {
  return {
    create: (user) => db.insert(user);
  }
};

// Constants are registered as a Container.CONSTANT by default
const container = require('connString', 'localhost');

// Functions are registered as a Container.FACTORY by default
const DBFactory = ({ connString }) => {
  return new Database(connString);
};

// To register Function as a Constant...
container.register('fetch', fetch, Container.CONSTANT);

container.register('UserService', makeUserService);

container.register('db', DBFactory);

// To resolve use `resolve`
const UserService = container.resolve('UserService');
// OR
const UserService2 = container.draw.UserService;

// To register several modules:
container.register({
  number1: 10,
  number2: 42,
});

console.log(container.draw.number2) // Outputs: 42

API

Author

Felipe J. L. Rita @felipelopesrita