4

Is there way or library that could tell where from require'd module was resolved and especially what binaries it possibly contains?

For example, when I require('coffee-script') there is (AFAIK) no way to tell its installation directory and what command line binaries it has.

What I ideally need is some kind of mix between require and package.json parser, e.g. like following hypotethical 'npminfo' library.

var npminfo = require('npminfo')

// get info about module
var pkginfo = npminfo.resolve('coffee-script')
pkginfo.version => '1.1.0'
pkginfo.path  => '/home/teemu/node_modules/coffee-script'
pkginfo.bins =>  { coffee: '/home/teemu/node_modules/coffee-script/bin/coffee', cake: '/home/teemu/node_modules/coffee-script/bin/cake'}

// generic info
npminfo.binpath => '/home/teemu/.node_modules/bin'

I did try to use require.paths and just walk through directories, but for some reason it does not contain path where my modules are actually installed. Somehow require still finds them though?

~ $ node
> require.paths
[ '/Users/teemuikonen/.node_modules',
  '/Users/teemuikonen/.node_libraries',
  '/usr/local/lib/node' ]
>

~ $ ls /usr/local/lib/node
wafadmin

~ $ ls .node_modules/
ls: .node_modules: No such file or directory

~ $ ls node_modules/
cli  cradle coffee-script ...

Thanks

Teemu Ikonen
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1 Answers1

7

use require.resolve('module') to get the path

require looks for a folder called node_modules at each level. This isn't displayed in require.paths(), but I'm not sure why.

Update: this will log the files in the modules folder

var fs = require('fs');
var path = require('path');
var path1 = require.resolve('module');
path1 = path.dirname(path1);
fs.readdir(path1, function(err, files){
  console.log(err);
  console.log(files);
})
Chris Biscardi
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  • Thanks! This returns path of the script, but is there way to get the module directory? – Teemu Ikonen Oct 27 '11 at 10:38
  • var fs = require('fs'); var path = require('path'); var path1 = require.resolve('module'); path1 = path.dirname(path1); fs.readdir(path1, function(err, files){ console.log(err); console.log(files); }) – Chris Biscardi Oct 27 '11 at 16:49
  • that will get you a list of the files in the directory that the module is in. From there you would have to manually find what you're looking for (like the package.json file) and parse it. – Chris Biscardi Oct 27 '11 at 16:51