slow npm install

slow_install.js

#!/usr/bin/env node

// This script will attempt to install your dependencies one by one
// I wrote it while debugging repeated failed attempts to `npm install`
// In the end, `npm cache clean` solved things for me

var json  = require(__dirname + '/../package.json'),
    depNames = Object.keys(json.dependencies),
    devDepNames = Object.keys(json.devDependencies),
    spawn = require('child_process').spawn,
    fs = require('fs');

var install = function(module, version) {
  var path = 'node_modules/' + module;

  if (fs.existsSync(path)) {
    console.log(module + ' already installed. skipping.');
    next();
  } else {
    console.log('installing ' + module + '@' + version);
    var child = spawn('npm', ['install', module + '@' + version], { stdio: 'inherit' });
    child.on('close', function(code) {
      console.log(module + ' exited w/ code ' + code);
      if (code === 0) {
        next();
      } else {
        console.log('aborting');
        var rm = spawn('rm', ['-r', path]);
        rm.on('error', function() {
          console.log('error removing bad install module', arguments);
        });
      }
    });
  }
};

var next = function() {
  var d;
  if (depNames.length === 0) {
    if (devDepNames.length === 0) {
      console.log('all done!');
    } else {
      d = devDepNames.pop();
      install(d, json.devDependencies[d]);
    }
  } else {
    d = depNames.pop();
    install(d, json.dependencies[d]);
  }
};

next();