docs: function getNodeFromScriptFile(scriptfile) {
      if (fs.existsSync(scriptfile)) {
          try {
              return SourceNode.fromStringWithSourceMap(
                  getScriptFromFile(scriptfile),
                  new SourceMapConsumer(getMapFromScriptFile(scriptfile))
              );
          } catch (error) {
              console.error('getNodeFromScriptFile() error: ' + error);
              return new SourceNode();
          }
      } else {
          return new SourceNode();
      }
  }