fix(rstest): hoist importActual ESM imports

[9aoy]

Summary

fix(rstest): rstest importActual + import mocked module ordering issue.

import { foo } from './src/foo' // => undefined

import * as actual from './src/foo' with { rstest: 'importActual' };
rstest.mock('./src/foo', () => ({ ...actual }))

• override rstest ESM import dependency templates for importActual attribute
• hoist generated StageESMImports fragments to run before mock hoist placeholders
• add importActual hoist marker comment in generated bundle output
• update importActualHoisted config case to verify hoisted importActual behavior

Related links

Checklist

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

[Copilot]

Pull request overview

Fixes an ordering issue where importActual ESM imports need to be emitted/initialized before rstest mock-hoist placeholders so that mocked-module factories can safely spread/use the “actual” namespace import.

Changes:

• Override Rspack’s ESM import dependency templates to hoist StageESMImports init fragments when the import has with { rstest: "importActual" }.
• Add an importActual hoist marker comment in generated output for easier verification/debugging.
• Extend rstest mock config-case coverage with a loader rule for importActual import-attributes and a new importActualHoisted entry test.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/rspack-test/configCases/rstest/mock/rspack.config.js	Updates test runtime mock implementation; adds loader rule for with { rstest: "importActual" }; adds new test entry.
tests/rspack-test/configCases/rstest/mock/importActualLoader.mjs	Adds a passthrough loader used to create a distinct module instance for importActual via import attributes.
tests/rspack-test/configCases/rstest/mock/importActualHoisted.js	Adds a regression test for importActual used in a mocked module factory when imports are hoisted.
crates/rspack_plugin_rstest/src/plugin.rs	Registers new dependency templates to override ESM import rendering for importActual ordering.
crates/rspack_plugin_rstest/src/lib.rs	Wires in the new esm_import_dependency module.
crates/rspack_plugin_rstest/src/esm_import_dependency.rs	Implements ESM import template overrides that hoist StageESMImports fragments for importActual.

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[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 0 projects with changes.

📊 Quick Summary

Project	Total Size	Change
react-10k	5.7 MB	0
react-1k	825.4 KB	0
react-5k	2.7 MB	0
ui-components	2.2 MB	0
rome	984.2 KB	0

Generated by Rsdoctor GitHub Action

[github-actions]

📦 Binary Size-limit

Comparing 65efcb4 to chore(workflow): remove API check from pre commit (#13044) by neverland

❌ Size increased by 6.88KB from 48.68MB to 48.68MB (⬆️0.01%)

[codspeed-hq]

Merging this PR will not alter performance

✅ 17 untouched benchmarks
⏩ 1 skipped benchmark¹

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_{Comparing importActual-hoisted (d868657) with main (2865b34)}

Footnotes

1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩

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[github-actions]

📝 Ecosystem CI detail: Open

suite	result
rspress	✅ success
rsbuild	✅ success
rstest	✅ success
rsdoctor	❌ failure
nuxt	❌ failure
lynx-stack	❌ failure
plugin	❌ failure
devserver	❌ failure
examples	❌ failure
rslib	✅ success
modernjs	✅ success