Description:
For ESM libraries (experiments.outputModule +library.type: "module"), replace runtime string concatenation with a compile‑timechunkId → URL mapping and emitimport(new URL("<literal>", import.meta.url).href). This makes dynamic imports statically analyzable by other bundlers and robust underfile://, while avoiding unused__webpack_require__.u/publicPath code.

Fixes:

• How to correctly parse the chunk resources in the library packaged by another webpack in webpack5? #15947

Testing:
Addedtest/configCases/library/module-dynamic-import-url to assert:

• presence ofnew URL(..., import.meta.url).href in output
• absence of__webpack_require__.u and publicPath concatenation
• dynamic import executes successfully

Breaking Changes:
None

Documentation Updates:
na

Related:
Part of#17121