function end() {
    try {
      this.queue(transformCss(filePath, data, opts));
    } catch(err) {
      this.emit("error", new Error(err));
    }

    this.queue(null);
  }
function end() {
    try {
      this.queue(transformCss(filePath, data, opts));
    } catch(err) {
      this.emit("error", new Error(err));
    }

    this.queue(null);
  }
function end ( ) { try { this . queue ( transformCss ( filePath , data , opts ) ) ; } catch ( err ) { this . emit ( "error" , new Error ( err ) ) ; } this . queue ( null ) ; }
Implementation of through interface.
Implementation of through interface .