function buildConfig(wantedEnv) {
  let isValid = wantedEnv && wantedEnv.length > 0 && allowedEnvs.indexOf(wantedEnv) !== -1;
  let validEnv = isValid ? wantedEnv : 'dev';
  let config = require(path.join(__dirname, 'cfg/' + validEnv));
  return config;
}
function buildConfig(wantedEnv) {
  let isValid = wantedEnv && wantedEnv.length > 0 && allowedEnvs.indexOf(wantedEnv) !== -1;
  let validEnv = isValid ? wantedEnv : 'dev';
  let config = require(path.join(__dirname, 'cfg/' + validEnv));
  return config;
}
function buildConfig ( wantedEnv ) { let isValid = wantedEnv && wantedEnv . length > 0 && allowedEnvs . indexOf ( wantedEnv ) !== - 1 ; let validEnv = isValid ? wantedEnv : 'dev' ; let config = require ( path . join ( __dirname , 'cfg/' + validEnv ) ) ; return config ; }
Build the webpack configuration
@param  {String} wantedEnv The wanted environment
@return {Object} Webpack config
Build the webpack configuration