import { undefined as someName } written when there are two entry points with a common dependency and one entry point importing the other

[emmatown]

• Rollup Version: 1.12.4
• Operating System (or Browser): macOS 10.14.4
• Node Version: 10.15.3

How Do We Reproduce?

https://rollupjs.org/repl?version=1.12.4&shareable=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

Expected Behavior

A separate chunk is generated for the common dependency and that is imported by both entry points and there are no imports like import { undefined as ... }

Actual Behavior

There are no extra chunks apart from the entry points and one of the imports looks like import { undefined as ... } and what it is trying to import is not exported by any chunk.

[lukastaegert]

Thanks for this issue! In the end, it lead to a larger refactoring to make the process that links chunks clearer and more straightforward. Fix at #2885.