nl_tokens: Returns only whitelisted and custom config options
pl_tokens: function codeConfig ( config ) { const conf = Object . <mask> ( null ) ; for ( const key in config . custom ) { conf [ key ] = config . custom [ key ] ; } for ( const key of [ 'host' , 'port' , 'backendPort' ] ) { conf [ key ] = config [ key ] ; } return conf ; }