Shrinkpack locations.js

locations.js

'use strict';

module.exports = {
  create: create
};

var path = require('path');
var terminal = require('terminal');

function create(options) {

  options = options || {};
  options.projectRoot = options.projectRoot || process.env.PWD;
  options.registryRoot = options.registryRoot || 'https://registry.npmjs.org';
  options.projectCacheName = options.projectCacheName || 'node_shrinkwrap';
  options.systemCacheRoot = '';

  terminal.exec('npm config get cache')
    .then(provideApi);

  function provideApi(systemCacheRoot) {

    options.systemCacheRoot = systemCacheRoot;

    return {

      projectCache: {
        root: projectCacheRoot,
        pkg: projectCachePackage
      },

      systemCache: {
        root: systemCacheRoot,
        pkg: systemCachePackage
      },

      publicRegistry: {
        root: registryRoot,
        pkg: registryPackage
      }

    };

  }

  function projectCacheRoot() {
    return path.resolve(path.join(options.projectRoot, options.projectCacheName));
  }

  function systemCacheRoot() {
    return options.systemCacheRoot;
  }

  function registryRoot() {
    return options.registryRoot;
  }

  function projectCachePackage(name, version) {
    return path.join(projectCacheRoot(), name + '-' + version + '.tgz');
  }

  function systemCachePackage(name, version) {
    return path.join(systemCacheRoot(), name, version, '/package.tgz');
  }

  function registryPackage(name, version) {
    return registryRoot() + '/' + name + '/-/' + name + '-' + version + '.tgz';
  }

}