old_contents: module.exports = {
      extends: [
          'onelint'
      ],
      env: {
          es6: false
      },
      parserOptions: null
  };
  
new_contents: module.exports = {
      extends: [
          'onelint'
      ],
      env: {
          es6: false
      }
  };
  
subject: Fix .eslintrc.js