fix: use correct Cell for EsmLibraryPlugin

[JSerFeng]

Summary

Plugin needs to run without any mutable reference, however we do need to store some data in plugin.

EsmLibraryPlugin has some internal state that needs to be initialized in make phase, and consumed by seal phase, we use OnceCell before, which will panic if user rebuild again.

The case is a common write then read case. And because we need to support async, so use AtomicRefCell for such cases.

Related links

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

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[Copilot]

Pull Request Overview

This PR refactors the EsmLibraryPlugin to replace OnceCell with AtomicRefCell for two fields: concatenated_modules_map_for_codegen and links. This change allows for more flexible interior mutability patterns and simplifies the code by replacing .get().expect() and .set().expect() calls with standard borrow operations.

Key Changes:

• Replace OnceCell with AtomicRefCell for internal state management
• Simplify access patterns using borrow() and borrow_mut() instead of get() and set()
• Add atomic_refcell as a new dependency

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
crates/rspack_plugin_esm_library/Cargo.toml	Adds atomic_refcell dependency
Cargo.lock	Updates lock file with new dependency
crates/rspack_plugin_esm_library/src/plugin.rs	Replaces OnceCell with AtomicRefCell for two fields and updates access patterns
crates/rspack_plugin_esm_library/src/link.rs	Updates mutation logic to use borrow_mut()
crates/rspack_plugin_esm_library/src/render.rs	Updates read access to use borrow() and direct indexing

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[github-actions]

📦 Binary Size-limit

Comparing 34dcef6 to fix: should parse webpackExports with empty array (#12066) by harpsealjs

❌ Size increased by 10.25KB from 47.85MB to 47.86MB (⬆️0.02%)

[codspeed-hq]

CodSpeed Performance Report

Merging #12067 will not alter performance

_{Comparing esm-lib-plugin (34dcef6) with main (3be48da)}

Summary

✅ 17 untouched