Remove babel polyfill from ESM output

[crimx]

ESM is for modern usage and should not include babel runtime. The babel regenerator runtime requires unsafe-eval CSP which is a safety concern. Removing the babel polyfill can fix this issue.

[crimx]

The babel regenerator runtime requires unsafe-eval CSP which is a safety concern.

Looks like they've fixed the issue. It was due to legacy dependencies.

Still recommend to remove the babel runtime for ESM though.

[guoyunhe]

Agree, we use polyfill.io and babel runtime is totally unnecessary in our scenario.