fix: commonJs default export

curtis-h commented 1 week ago

Description:

Our exported index.cjs was exporting a flattened object, but the Types show a default and commonJs targeted builds with TS would fail, expecting a default property which didn't exist.

Adds a default property to the export if one doesn't already exist.

Adding integration tests for TS builds to cjs and esm, and making all node integration tests use the same tests.

Checklist:

[x] My PR follows the contribution guidelines of this project
[x] My PR is free of third-party dependencies that don't comply with the Allowlist
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have made corresponding changes to the documentation
[x] I have added tests that prove my fix is effective or that my feature works
[x] I have checked the PR title to follow the conventional commit specification