npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

noicejs

v5.0.0-3

Published

extremely thin dependency injection

Downloads

110

Readme

noicejs

Extremely thin, async dependency injection, now with a getting started guide.

Inspired by Google's Guice library and written in Typescript.

Features

  • async dependency resolution
  • constructor and property injection
  • modular containers with inheritance
  • named dependencies using strings or unique symbols
  • typed errors
  • typescript typedefs
  • zero runtime dependencies, bundled or otherwise
  • extensive test coverage

Contents

Status

Pipeline status Lines of Code Test coverage MIT license FOSSA Status

Open bug count Open issue count Closed issue count

Renovate badge Dependency status Dev dependency status Known vulnerabilities

Maintainability score Technical debt ratio Quality issues Language grade: JavaScript Total alerts

Releases

  • 3.x versions are compatible with Node 12+
  • 4.x versions are compatible with Node 16+

github release link github release version github commits since release

npm package link npm release version Typescript definitions

Usage

Consider a Server class that needs to fetch data from the Cache and Filesystem, but doesn't know (or need to know) how those are implemented. The following example is also part of the unit tests.

import { LocalModule } from './local';
import { NetworkModule } from './network';

class Cache {
  public get(path: string, ttl: number, fallback: () => Promise<string>): Promise<string> {
    /* ... */
  }
}

class Filesystem {
  public get(path: string): Promise<string> {
    /* ... */
  }
}

/**
 * Constructors, strings, and symbols are supported. Symbols are
 * preferred, as the most unique, but names can be convenient.
 */
@Inject(Cache.name.toLowerCase(), Filesystem.name.toLowerCase())
class Server {
  protected readonly cache: Cache;
  protected readonly filesystem: Filesystem;
  protected readonly ttl: number;

  constructor(options) {
    this.cache = options.cache;
    this.filesystem = options.filesystem;
    this.ttl = defaultTo(options.ttl, 0);
  }

  get(path: string) {
    return options.cache.get(path, this.ttl, () => options.filesystem.get(path));
  }
}

const TEST_TTL = 60;

function module() {
  if (process.env['DEBUG'] === 'TRUE') {
    return new LocalModule();
  } else {
    return new NetworkModule();
  }
}

async function main() {
  const container = Container.from(module());
  await container.configure();

  const server = await container.create(Server, {
    /* cache and filesystem are found and injected by container */
    ttl: TEST_TTL,
  });

  /* server.cache.get and server.filesystem.get will be called in order */
  const result = await server.get('some/file');
}

noicejs will collect dependencies from the decorated constructor and any superclasses, find a provider for each injected dependency, and asynchronously resolve them before calling the constructor. Any extra parameters are passed on to the original constructor, along with the container and resolved dependencies.

Build

To build a bundle and run tests:

> make

yarn
yarn install v1.17.3
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.20s.
/home/ssube/code/ssube/noicejs//node_modules/.bin/rollup --config /home/ssube/code/ssube/noicejs//config/rollup.js

src/index.ts, test/harness.ts, test/**/Test*.ts → out/...
...
created out/ in 3.3s
/home/ssube/code/ssube/noicejs//node_modules/.bin/api-extractor run --config /home/ssube/code/ssube/noicejs//config/api-extractor.json --local -v

api-extractor 7.3.8  - https://api-extractor.com/
...

API Extractor completed successfully
Success!

License

FOSSA Status