// 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.putMapping({
  index: "my-index-000001",
  runtime: {
    client_ip: {
      type: "ip",
      script: {
        source:
          'String m = doc["message"].value; int end = m.indexOf(" "); emit(m.substring(0, end));',
      },
    },
  },
});
console.log(response);
----