// This file is autogenerated, DO NOT EDIT
// Use `node scripts/generate-docs-examples.js` to generate the docs examples

[source, js]
----
const response = await client.reindex({
  body: {
    source: {
      index: 'twitter'
    },
    dest: {
      index: 'new_twitter',
      version_type: 'external'
    },
    script: {
      source: "if (ctx._source.foo == 'bar') {ctx._version++; ctx._source.remove('foo')}",
      lang: 'painless'
    }
  }
})
console.log(response)
----