twreporter-react/node_modules_node_5/karma/lib/plugin.js

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var fs = require('graceful-fs')
var path = require('path')

var helper = require('./helper')
var log = require('./logger').create('plugin')

var IGNORED_PACKAGES = ['karma-cli', 'karma-runner.github.com']

exports.resolve = function (plugins) {
  var modules = []

  var requirePlugin = function (name) {
    log.debug('Loading plugin %s.', name)
    try {
      modules.push(require(name))
    } catch (e) {
      if (e.code === 'MODULE_NOT_FOUND' && e.message.indexOf(name) !== -1) {
        log.warn('Cannot find plugin "%s".\n  Did you forget to install it ?\n' +
          '  npm install %s --save-dev', name, name)
      } else {
        log.warn('Error during loading "%s" plugin:\n  %s', name, e.message)
      }
    }
  }

  plugins.forEach(function (plugin) {
    if (helper.isString(plugin)) {
      if (plugin.indexOf('*') !== -1) {
        var pluginDirectory = path.normalize(__dirname + '/../..')
        var regexp = new RegExp('^' + plugin.replace('*', '.*'))

        log.debug('Loading %s from %s', plugin, pluginDirectory)
        fs.readdirSync(pluginDirectory).filter(function (pluginName) {
          return IGNORED_PACKAGES.indexOf(pluginName) === -1 && regexp.test(pluginName)
        }).forEach(function (pluginName) {
          requirePlugin(pluginDirectory + '/' + pluginName)
        })
      } else {
        requirePlugin(plugin)
      }
    } else if (helper.isObject(plugin)) {
      log.debug('Loading inlined plugin (defining %s).', Object.keys(plugin).join(', '))
      modules.push(plugin)
    } else {
      log.warn('Invalid plugin %s', plugin)
    }
  })

  return modules
}