Reproduction link or steps

https://repl.rolldown.rs/#eNptUO1KxTAMfZWSP1OYHYIizD+ir1GEsGWXapuOttOrY+9u2uHHlfurTc7JOTlZYYJ+BcsjHXVO5c/Q/9YtDKX0c4hZNQ/kMGU7dDj7q7j45l4IBH2OC20txODcGN5ZD4Ene/ijdwY5UV7VSJNleqqw2tQUg1fN91hj2DAdK1WIuLj6/gxcrIaVsjwvuVe7pPaUUddWW8CuUyJA0XrijK4XS4efH48YI0k1oUukNsPbpWGQLDMOr3gg/ZKCBNhTnPT2/auxgZFmkpPxYCkZEPHSLsD/ixXQwPOtvr7TNwYKrZgWTzF9E0WHmVKG7Qulyorh

The reproduction is simply to process

import "@elastic/apm-rum";

with no other configuration, and to load the bundled code in any browser on in Node.js.

What is expected?

Importing the bundled code in a browser should succeed, setting window.elasticApm as a side-effect.

What is actually happening?

Just importing the bundled code in any browser or in Node.js fails with a ReferenceError:

Uncaught ReferenceError: serviceCreators is not defined
    registerServices http://localhost:8000/dist/elastic.js:2024
    createServiceFactory http://localhost:8000/dist/elastic.js:2373
    getApmBase http://localhost:8000/dist/elastic.js:2528
    <anonymous> http://localhost:8000/dist/elastic.js:2532

This error occurs in node_modules/@elastic/apm-rum-core/dist/es/performance-monitoring/index.js, where only _serviceCreators and serviceCreators$1 are in scope if lazyBarrel is enabled.

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
    Memory: 2.85 GB / 15.69 GB
  Binaries:
    Node: 24.14.0 - C:\Program Files\nodejs\node.EXE
    npm: 11.9.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: 149.0.7827.103
    Edge: Chromium (140.0.3485.54)
    Firefox: 151.0.4 - C:\Program Files\Mozilla Firefox\firefox.exe
  npmPackages:
    rolldown: ^1.1.0 => 1.1.0

Any additional comments?

No response