Nagging Penguin Matriarchs
    Share your code. npm Orgs help your team discover, share, and reuse code. Create a free org »

    dependency-groupspublic

    dependency-groups

    Dependency groups is useful when you have a list of interrelated items that need to be actioned on in the correct order (package managers are a decent parallel).

    Features

    • cyclic dependencies throw errors
    • no duplicates in the final group
    • depth first ordering of services make it easy to action on groups

    Usage

    var group = require('dependency-groups');
     
    // Imagine you have this list of services. The service can have many
    // different dependencies (and dependencies can have dependencies,
    // etc...) the goal is to launch them in the correct order and in
    // parallel as much as possible.
    var services = {
      worker: ['queue'],
      appworker: ['worker'],
      app: ['db', 'queue'],
      db: ['monit', 'xvfb'],
      queue: ['monit', 'amqp'],
      monit: [],
      xvfb: ['monit'],
      amqp: []
    };
     
    // group them together so you can take some action on each group
    var launchGroups = group(services);
     
    // the above will give you this list of groups
    launchGroups = [
      ['monit', 'amqp'],
      ['queue', 'xvfb'],
      ['worker', 'db'],
      ['appworker', 'app']
    ];
     
    // selectively group only some items
    var workerGroups = group(services, ['worker']);
    workerGroups = [
      ['monit', 'amqp'],
      ['queue'],
      ['worker']
    ];

    LICENSE

    The MIT License (MIT)

    Copyright (c) 2014 Sahaja James Lal

    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    Keywords

    none

    install

    npm i dependency-groups

    Downloadsweekly downloads

    239

    version

    0.1.1

    license

    none

    repository

    githubgithub

    last publish

    collaborators

    • avatar