nl_tokens: Normalize the transformers
pl_tokens: function normalizeTransformers ( transformerMap ) { let result = [ ] ; transformerMap && Object . keys ( transformerMap ) . forEach ( k => { let item = transformerMap [ k ] ; if ( item ) { item . transform . <mask> = k ; result . push ( Object . assign ( { } , item , { name : k } ) ) ; } } ) ; return result ; }