fix: distinguish external modules when there are import attributes

[fi3ework]

Summary

previously, there's no difference when importing an external module with and without import attributes, as the ChunkInitFragment key didn't counting import attributes.

source

import { a1 } from 'a'
import { a2 } from 'a' with { type: "json" }
console.log(a1, a2)

result before

import { a1, a2 } from 'a' // sometimes it suffixs with attributes, it's a race condition.
console.log(a1, a2)

result now

import { a1 } from 'a'
import { a2 } from 'a' with { type: "json" }
console.log(a1, a2)

Related links

Checklist

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

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[github-actions]

📦 Binary Size-limit

Comparing c694871 to chore(deps): update patch npm dependencies (#11806) by renovate[bot]

❌ Size increased by 1.63KB from 47.89MB to 47.89MB (⬆️0.00%)

[codspeed-hq]

CodSpeed Performance Report

Merging #11845 will not alter performance

_{Comparing distinguis-exter-attr (c694871) with main (dd19380)}

Summary

✅ 17 untouched

[Copilot]

Pull Request Overview

This PR fixes a bug where external modules with import attributes were not being distinguished from those without attributes, causing incorrect import statement merging. The fix ensures that import attributes are properly considered when generating unique keys for external module fragments.

• Added import attributes to external module identifier generation
• Updated InitFragmentKey generation to include import attributes
• Added test coverage to verify correct handling of imports with and without attributes

Reviewed Changes

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

File	Description
crates/rspack_core/src/external_module.rs	Core fix implementing attribute-aware fragment key generation and module identification
tests/rspack-test/configCases/externals/import-attributes/index.js	Added test cases for imports with and without attributes
tests/rspack-test/configCases/externals/import-attributes/rspack.config.js	Added assertions to verify distinct handling of imports with different attributes

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