// 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.indices.migrateReindex({
  reindex: {
    source: {
      index: "my-data-stream",
    },
    mode: "upgrade",
  },
});
console.log(response);
----
