// 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.search({
  index: "my-index-000001",
  runtime_mappings: {
    duration: {
      type: "long",
      script: {
        source:
          "\n          emit(doc['measures.end'].value - doc['measures.start'].value);\n          ",
      },
    },
  },
  aggs: {
    duration_stats: {
      stats: {
        field: "duration",
      },
    },
  },
});
console.log(response);
----