Research
Security News
Malicious npm Packages Inject SSH Backdoors via Typosquatted Libraries
Socket’s threat research team has detected six malicious npm packages typosquatting popular libraries to insert SSH backdoors.
dagger-compiler
Advanced tools
===============
Dependency injection for Node like Dagger2 for Android (https://google.github.io/dagger/)
$ npm install --save dagger-compiler
Checkout sample module for detail implementation.
Component is a central part of dagger. It contains all modules that provide and resolve dependencies
const AppModule = require('./appModule')
const ServiceModule = require('./serviceModule')
@Component(modules = [AppModule, ServiceModule])
module.exports = class AppComponent {
}
Module is reponsible for providing dependency instances. Intances can be Singleton. A Singleton is only valid within Component, not global.
const ConfigService = require('../services/configService')
const DatabaseService = require('../services/databaseService')
@Module
module.exports = class ServiceModule {
@Singleton
@Provides('configService')
provideConfigService() {
return new ConfigService(...arguments)
}
@Provides('databaseService')
provideDatabaseService(configService) {
return new DatabaseService(...arguments)
}
}
Naming is important here. configService
is required for building DatabaseService
. These are two lines that need to be matched @Provides('configService')
and provideDatabaseService(configService) {...}
module.exports = class DatabaseService {
constructor(configService) {
this.configService = configService
this.constructor._count = this.constructor._count || 0
this.constructor._count += 1
this.instanceCount = this.constructor._count
}
loadProducts() {
return [
this.configService.getSecretKey(),
this.configService.getSecretKey(),
this.configService.getSecretKey(),
this.configService.getSecretKey(),
this.configService.getSecretKey()
]
}
}
Use Dagger.Builder to generate component instance.
require('dagger-compiler')
const AppComponent = require('./di/appComponent')
const AppModule = require('./di/appModule')
const ServiceModule = require('./di/serviceModule')
const appComponent = new Dagger.Builder(AppComponent)
.appModule(new AppModule())
.serviceModule(new ServiceModule())
.build()
Module with empty constructor can be skip while generating component.
const AppComponent = require('./di/appComponent')
const appComponent = new Dagger.Builder(AppComponent).build()
All provided objects can be call from component instance
let configService = appComponent.getConfigService()
let databaseService = appComponent.getDatabaseService()
Any other classes that are not in component graph can retrieve data from component after calling component.inject(this)
module.exports = class MainController {
// This will return configService that is provided from component after calling component.inject(this)
@Inject configService
// This will return databaseService that is provided from component after calling component.inject(this)
@Inject databaseService
constructor(component) {
component.inject(this)
}
getSecretKeyFromConfigService() {
return this.configService.getSecretKey()
}
loadProductsFromDatabaseService() {
return this.databaseService.loadProducts()
}
}
Any contributions are welcome!
Please check the CONTRIBUTING guideline before submitting a new issue. Wanna send PR? Click HERE
Copyright 2017 "Henry Tao <hi@henrytao.me>"
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
FAQs
Dependency injection for Node like Dagger2 for Android
The npm package dagger-compiler receives a total of 1 weekly downloads. As such, dagger-compiler popularity was classified as not popular.
We found that dagger-compiler demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Research
Security News
Socket’s threat research team has detected six malicious npm packages typosquatting popular libraries to insert SSH backdoors.
Security News
MITRE's 2024 CWE Top 25 highlights critical software vulnerabilities like XSS, SQL Injection, and CSRF, reflecting shifts due to a refined ranking methodology.
Security News
In this segment of the Risky Business podcast, Feross Aboukhadijeh and Patrick Gray discuss the challenges of tracking malware discovered in open source softare.