Support for NPM 3+

[siddharthkp]

Hey, landed here from (this comment on the npm repo)[https://github.com/npm/npm/issues/10361#issuecomment-247862042]

When I run kit deps in my repo, i only get size of modules in my package.json, not the modules that these depend on internally. Basically, only one level of depth.

Ideally, this should follow the tree down till the last node of the tree to calculate the actual size?
Please correct me if I misunderstood 😄

I'm on node 6.4.0 and npm 3.10.7

Using this on auto-install

auto-install$ kit deps
  glob@7.1.0                 56.6 KB    0.028 seconds
  is-builtin-module@1.0.0    4.56 KB    0.002 seconds
  log-symbols@1.0.2          4.74 KB    0.002 seconds
  ora@0.3.0                  8.73 KB    0.004 seconds
  package-json@2.4.0         7.07 KB    0.003 seconds
  chokidar@1.6.1             78.3 KB    0.039 seconds
  detective-es6@1.1.5        6.12 KB    0.003 seconds
  request@2.74.0             196.45 KB  0.098 seconds
  yargs@6.3.0                211.71 KB  0.105 seconds
  colors@1.1.2               28.77 KB   0.014 seconds
  detective@4.3.2            19.02 KB   0.009 seconds
  sync-exec@0.6.2            14.88 KB   0.007 seconds

Altogether, dependencies weigh in at 636.99 KB

[mikermcneil]

@siddharthkp hmm, I'm not sure-- I use NPM 2, so it always does that for me by default. In NPM 3, all of your dependencies are on the top level, so I definitely could see how that'd cause trouble :/

I'm down to set up something to solve that problem, probably'll want to do it as a pass which recursively crawls the package.json files (trying for the nested node_modules folders first for npm 2 support, and then falling back to the higher level node_modules folders for npm 3 support). The idea being to get where we've got a dictionary mapping package identifiers/installed versions to where they're located, relative from the top-level directory (e.g. { 'glob@7.1.0': 'node_modules/whatever/node_modules/glob/' } }). Then from there, it's a matter of going through and duing them to accumulate the proper weight.

So.. ick. I think I can do it, but it'd be good to have a bit more insight on exactly where NPM 3 can put things first (something that's plaguing me as far as the auto npm linking we do when people create new Sails apps via the CLI-- had to straight up disable it for npm 3, which sucks)

[siddharthkp]

@mikerncneil Hey, I ended up creating one of my own!

https://github.com/siddharthkp/cost-of-modules

Feedback welcome :)

[mikermcneil]

@siddharthkp sweet! I'll check it out