nl_tokens: The thread - loader parallelizes code compilation useful with babel since it transpiles both application javascript and node_modules javascript
pl_tokens: function babel ( options = { } ) { return ( context , { addLoader } ) => addLoader ( { // setting `test` defaults here, in case there is no `context.match` data test : / \.(js|jsx)$ / , use : [ { loader : 'thread-loader' , options : { // Keep workers alive for more effective watch mode ... ( process . env . NODE_ENV === 'development' && { poolTimeout : Infinity } ) , } , } , { loader : 'babel-loader' , options : Object . assign ( babelLoaderOptions , <mask> ) , } , ] , ... context . match , } ) }