Codemod for Babel 6 Semicolon Requirement

codemod-add-semicolon.js

module.exports = function (file, api) {
  var j = api.jscodeshift;
  var root = j(file.source);
  
  // Finds the all classes that have properties
  root
    .find(j.ClassDeclaration, {
      body: {
        type: 'ClassBody',
        body: [{
          type: 'ClassProperty'
        }]
      }
    })
    .forEach((path) => {
      // Finds the properties themselves on the class
      j(path)
        .find(j.ClassProperty)
        .replaceWith(function (path) {
          // Adds a semicolon if necessary
          var source = j(path).toSource();
          if (source[source.length - 1] === ';') return source;
          return source.concat(';');
        });
    });

  return root.toSource(sourceOptions);
};

Problem running this script : ReferenceError: sourceOptions is not defined