// 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",
  size: 0,
  runtime_mappings: {
    "message.length": {
      type: "long",
      script: "emit(doc['message.keyword'].value.length())",
    },
  },
  aggs: {
    message_length: {
      histogram: {
        interval: 10,
        field: "message.length",
      },
    },
  },
});
console.log(response);
----