koa-inject

Inject dependencies into koa apps easily.

Example

'use strict';
 
var koa = require('koa');
var Router = require('koa-router');
var inject = require('koa-inject');
 
var router = new Router();
var app = koa();
 
var injector = inject.init(app, {
  'db': {
    a: 6
  },
  'db2': {
    b: 7
  }
});
 
injector.set('User', {
  name: 'User'
});
 
app.use(router.middleware());
 
router.get('/', inject(function * (db, db2, User) {
  this.body = [
    User,
    db
  ];
}));
 
app.listen(3031);

API Documentation

inject(*function)

Injects dependencies into generator function from koa application context. Returns a new generator function.

var Router = require('koa-router');
var inject = require('koa-inject');
var router = new Router();
 
module.exports = router.middleware();
 
router.get('/', inject(function * (deps...) {
    
}));

inject.init(app, [modules]) : Injector

Initializes dependency injection into koa app. Returns an instance of simple-injector Injector.

var koa = require('koa');
var inject = require('koa-inject');
var app = koa();
var injector = inject.init(app);

Tests

$ npm test

Inspired by

poying/simple-injector poying/koa-simple-di