fix: incremental rebuild no code generation entry panic

[jerrykingxyz]

Summary

Incremental rebuild at specified stages are disabled under the following conditions:

1. Manually disabled by the user. In this case, rspack will not move the artifacts from the previous compiler during rebuild.

2. Some plugins disable incremental builds at certain stages. For example, FlagDependencyUsagePlugin disables incremental builds for MODULES_HASHES. In this case, rspack will perform a full build based on the artifacts from the previous build, resulting in some content being retained and causing bugs. Please refer to the test cases for details.

rspack/crates/rspack_plugin_javascript/src/plugin/flag_dependency_usage_plugin.rs

Line 498 in 2ed1576

if let Some(diagnostic) = compilation.incremental.disable_passes(

Related links

Checklist

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

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[Copilot]

Pull request overview

This PR fixes a panic that occurs during incremental rebuilds when there is no code generation entry. The fix ensures that various compilation artifacts are properly cleared when incremental compilation is not active or when falling back to full rebuilds.

• Adds artifact clearing in non-incremental compilation paths to prevent stale data
• Adds a comprehensive test case for recovering from file deletion errors during watch mode
• Ensures consistency with existing artifact clearing patterns

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/rspack_core/src/compilation/mod.rs	Adds artifact clearing for chunk_render_artifact, cgm_hash_artifact, code_generation_results, cgm_runtime_requirements_artifact, cgc_runtime_requirements_artifact, and chunk_hashes_artifact in the else branches of incremental compilation checks
tests/rspack-test/watchCases/recover-from-error/delete-file/rspack.config.js	Configuration for the delete-file watch test case enabling usedExports optimization
tests/rspack-test/watchCases/recover-from-error/delete-file/0/index.js	Initial test state checking that the file can be required and returns 'ok'
tests/rspack-test/watchCases/recover-from-error/delete-file/0/file.js	Initial file content that exports 'ok'
tests/rspack-test/watchCases/recover-from-error/delete-file/1/file.js	Invalid file content 'DELETE' to trigger an error
tests/rspack-test/watchCases/recover-from-error/delete-file/1/errors.js	Expected error assertion for module resolution failure
tests/rspack-test/watchCases/recover-from-error/delete-file/1/warnings.js	Expected warning assertion for FlagDependencyUsagePlugin
tests/rspack-test/watchCases/recover-from-error/delete-file/2/file.js	Restored valid file content to verify recovery
tests/rspack-test/watchCases/recover-from-error/delete-file/2/warnings.js	Expected warning assertion for FlagDependencyUsagePlugin after recovery

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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
rome	984.3 KB	0
ui-components	2.1 MB	0

Generated by Rsdoctor GitHub Action

[codspeed-hq]

CodSpeed Performance Report

Merging #12643 will not alter performance

_{Comparing jerry/fix (2994380) with main (2ed1576)}

Summary

✅ 16 untouched
⏩ 1 skipped¹

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. ↩

[github-actions]

📦 Binary Size-limit

Comparing 2994380 to chore: release v1.7.1 (#12638) by harpsealjs

❌ Size increased by 768bytes from 47.87MB to 47.87MB (⬆️0.00%)

[ahabhgk]

I guess after revert this https://github.com/web-infra-dev/rspack/pull/12576/changes#diff-c43afdae69552b813a5f3557b972a46f3a40199f1abfc16ba0c5ace27af6618fR498, the test will work as expected