nl_tokens: Exposes objects as another value when serialized . expose uses the expose property of object [ resources ] {
pl_tokens: function expose ( obj , val ) { if ( arguments . <mask> === 1 ) { if ( obj instanceof Error ) Object . defineProperty ( obj , "message" , { enumerable : true , value : obj . message } ) ; val = obj ; } return resource ( obj , { expose : val } ) ; }