The library helps to build your own module system. Barely it resolves the Dependency Inversion Principle of SOLID. It is used as a barebone for an application that simplifies logic integration and its usage.

Be free and ask me questions personally on Gitter

Basic usage

Register basic models for future instance.

import { ContainerLocator } =  from 'instance-licator'

const config = {
  test: 'configTest'
}

class CoreModel {
  constructor(config) {
    this.config = config
  }
  test() { return 'coreTest' }
}

class DbModel {
  constructor(core) {
    this.core = core
  }

  test() {
    return 'dbTest'
  }

}

Define symbols for instances

const TYPES = {
  config: Symbol('config'),
  core: Symbol('core'),
  db: Symbol('db')
}

Create locator and register models

const locator = new ContainerLocator()
locator
  .registerValue(TYPES.config, config)
  .register(TYPES.core, CoreModel, [ TYPES.config ])
  .register(TYPES.db, DbModel, [TYPES.core])

Initiate models by the locator, use your logic.

const instance = locator.get(TYPES.db)
const core = locator.get(TYPES.core)

Use your logic

// Outputs dbTest.
console.log(instance.test(), 'dbTest')

// Outputs coreTest.
console.log(instance.core.test())

// Outputs configTest.
console.log(instance.core.config.test)

// Same instances.
console.log('Same instances - ', core == instance.core)

Also check the basic example and tests.

To run the basic example

npx babel-node ./example/basic.js