## The symptom
`checkout-sdk-node` 3.0.1 fails at build or bundle time for consumers. The
breakage is in the published module format, not the SDK logic, and the reporter
confirmed it on Node 22.
## The fix
Upgrade to checkout-sdk-node 3.0.3 or newer:
```
npm install checkout-sdk-node@^3.0.3
```
The reporter confirmed it works perfectly in 3.0.3. No config change is needed,
just the version bump.
## The general lesson
When a patch release breaks your build but your code did not change, check the
package's issue tracker before debugging your bundler config. A broken published
artifact looks exactly like a local build problem at first.