7.5.5 increased bundle size

[BlackGlory]

Describe the bug

The "require" fields added by #6821 cause webpack to use the cjs version instead of the esm version.
If all the "require" fields are removed, the bundle size will be reduced.

Expected behavior

webpack should use the esm version.

Reproduction code

No response

Reproduction URL

No response

Version

7.5.5

Environment

No response

Additional context

No response

[SimenB]

Adding import condition above require condition should fix it

[mokipedia]

@SimenB can you clarify: is this something rxjs needs to change or is there a config change a project can do to mitigate this?

[SimenB]

my suggested solution would be here in rxjs