fix: NativeWatchFileSystem should handle inputFileSystem when files change

[GiveMe-A-Name]

Summary

What This PR Does

This PR fixes a critical bug in Rspack's NativeWatchFileSystem where it wasn't properly handling the inputFileSystem cache invalidation when files change during watch mode, leading to stale cached file contents and incorrect build behavior.

Key Issues Fixed

1. Cache Invalidation Bug
   Problem: When files changed during watch mode, the inputFileSystem cache wasn't being purged, causing the compiler to use outdated file contents
   Solution: Added proper cache purging logic that calls fs.purge?.(item) for both changed and removed files
2. Watcher Executor Loop Issue
   Problem: In the Rust watcher executor, when the file list was empty, the function would return instead of continue, causing the watch loop to exit prematurely
   Solution: Changed return to continue to keep the watcher loop running even when no files are pending

Related links

Checklist

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

[Copilot]

Pull Request Overview

This PR fixes the NativeWatchFileSystem to properly handle the inputFileSystem when files change during watch mode. The fix ensures that the file system cache is properly purged when files are modified or removed, preventing stale cached data from being used.

Key changes:

• Modified NativeWatchFileSystem constructor to accept and store an inputFileSystem parameter
• Added cache purging logic to clear cached file data when files change or are removed
• Fixed a potential infinite loop in the Rust watcher executor by changing return to continue
• Added comprehensive test coverage for the native watcher functionality

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/rspack/src/node/NodeEnvironmentPlugin.ts	Updated to pass inputFileSystem parameter to NativeWatchFileSystem constructor
packages/rspack/src/NativeWatchFileSystem.ts	Added constructor parameter and cache purging logic for changed/removed files
crates/rspack_fs/src/watcher/executor.rs	Fixed potential infinite loop by changing return to continue in empty files condition
tests/webpack-test/jest.config.js	Enabled new native watcher test cases in Jest configuration
tests/webpack-test/NativeWatcherTestCases.longtest.js	Added new test file for native watcher functionality

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[github-actions]

📦 Binary Size-limit

Comparing c2f5f9c to chore: upgrade rspack_resolver to 0.6.1 (#11175) by pshu

❌ Size increased by 128bytes from 49.00MB to 49.00MB (⬆️0.00%)

[codspeed-hq]

CodSpeed Performance Report

Merging #11164 will not alter performance

_{Comparing fix/native-watcher (c2f5f9c) with main (e9e5acc)}

🎉 Hooray! codspeed-node just leveled up to 4.0.1!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

Summary

✅ 16 untouched benchmarks