nl_tokens: / * interface StringTransformOptions { contents : String fetcher : Fetcher filePath : String index : FetcherIndex } transform ( opts : StringTransformOptions ) = > String
pl_tokens: function transform ( opts ) { var contents = opts . contents ; var filePath = opts . filePath ; var index = opts . <mask> ; // original remote URL for the given CSS file var cssRemoteUrl = index . resolveRemoteUrl ( path . basename ( filePath ) ) ; return contents . replace ( / url\(['"\s]*[^()'"]+['"\s]*\) / g , ( cssUrlStmt ) => { var cssUrl = cssUrlStmt . replace ( / url\(['"\s]*([^()'"]+)['"\s]*\) / , '$1' ) ; var remoteUrl ; var localUrl ; if ( cssUrl . indexOf ( 'data:' ) === 0 ) { return cssUrlStmt ; // noop for Data URIs } remoteUrl = url . resolve ( cssRemoteUrl , cssUrl ) ; localUrl = index . resolveLocalUrl ( remoteUrl ) ; return 'url(' + localUrl + ')' ; } ) ; }