code: function init (options) {
    if (typeof options === 'string') {
      options = { base: options }
    }
  
    options = options || {}
  
    // There is probably 99% chance that the project root directory in located
    // above the node_modules directory
    var base = nodePath.resolve(
      options.base || nodePath.join(__dirname, '../..')
    )
    var packagePath = base.replace(/\/package\.json$/, '') + '/package.json'
  
    try {
      var npmPackage = require(packagePath)
    } catch (e) {
      // Do nothing
    }
  
    if (typeof npmPackage !== 'object') {
      throw new Error('Unable to read ' + packagePath)
    }
  
    //
    // Import aliases
    //
  
    var aliases = npmPackage._moduleAliases || {}
  
    for (var alias in aliases) {
      if (aliases[alias][0] !== '/') {
        aliases[alias] = nodePath.join(base, aliases[alias])
      }
    }
  
    addAliases(aliases)
  
    //
    // Register custom module directories (like node_modules)
    //
  
    if (npmPackage._moduleDirectories instanceof Array) {
      npmPackage._moduleDirectories.forEach(function (dir) {
        if (dir === 'node_modules') return
  
        var modulePath = nodePath.join(base, dir)
        addPath(modulePath)
      })
    }
  }
docs: Import aliases from package.json
  @param {object} options