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node_modules/node-gyp/lib/list.js 718 Bytes
aaac7fed   liuqimichale   add
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  module.exports = exports = list
  
  exports.usage = 'Prints a listing of the currently installed node development files'
  
  /**
   * Module dependencies.
   */
  
  var fs = require('graceful-fs')
    , path = require('path')
    , log = require('npmlog')
  
  function list (gyp, args, callback) {
  
    var devDir = gyp.devDir
    log.verbose('list', 'using node-gyp dir:', devDir)
  
    // readdir() the node-gyp dir
    fs.readdir(devDir, onreaddir)
  
    function onreaddir (err, versions) {
      if (err && err.code != 'ENOENT') {
        return callback(err)
      }
      if (Array.isArray(versions)) {
        versions = versions.filter(function (v) { return v != 'current' })
      } else {
        versions = []
      }
      callback(null, versions)
    }
  }