Support offline / no-index installs about ied HOT 1 OPEN

+1 for this, but its actually a lot more simple. Just need to tie in with npm's cache instead of installing to node_modules/.tmp. When installing a second time, it just checks npm cache for the tarball. This way your compatible with npm, supports offline installs, and really speeds up the install process.

function getUserHome() {
  return process.env[(process.platform == 'win32') ? 'USERPROFILE' : 'HOME'];
}

function getTarball(pkg) {
  return path.join(getUserHome(), '.npm', pkg.name, pkg.version, 'package.tgz');
}

if (pathExists(getTarball(pkg)) {
  // -> alreaded downloaded -> gunzip 
} else {
 // -> download
}

You could later expand this to use a custom path instead of npm's cache, but then it wouldn't work alongside npm.

from ied.