How to Clean Bun JavaScript Runtime Package & Install Cache
Location & Quick Verdict
%UserProfile%\.bun\install\cache
Bun caches downloaded npm packages, binary tarballs, and compiled native bindings in .bun\install\cache for ultra-fast offline installs.
Why Package Tarballs, Symbol Indexes & Build Artifacts Pile Up in Bun JavaScript Runtime Package & Install Cache
Developer toolchains, language package managers, and modern IDEs cache every downloaded dependency version, pre-compiled wheel/crate tarball, C++/Rust incremental build target, and Language Server Protocol (LSP) AST index inside %UserProfile%\.bun\install\cache. Because dependency lockfiles evolve every week, historical versions from old branches remain cached indefinitely—turning Bun JavaScript Runtime Package & Install Cache into a multi-gigabyte graveyard of thousands of small files.
Thousands of small cache entries inside %UserProfile%\.bun\install\cache also degrade Windows Defender real-time filesystem scanning and slow down backup indexing. Cleaning Bun JavaScript Runtime Package & Install Cache reclaims 1.5 GB – 10.0 GB of SSD capacity while preserving your active source code repositories, .env secrets, SSH keys, and workspace configurations.
# Inspect current disk footprint of Bun JavaScript Runtime Package & Install Cache (Read-Only)
$target = "$env:USERPROFILE\.bun\install\cache"
Get-ChildItem -Path $target -Recurse -Force -ErrorAction SilentlyContinue |
Measure-Object -Property Length -Sum |
Select-Object Count, @{Name="SizeGB";Expression={[math]::Round($_.Sum / 1GB, 2)}}
Manual Cleaning Instructions
- 1 Open Windows Terminal.
- 2 Run 'bun pm cache rm' to purge the global package cache.
- 3 Or delete the %userprofile%\.bun\install\cache directory in File Explorer.
Note: If Windows alerts that a file is in use or locked by a background process, close the associated task in Task Manager before deleting, or use SWEEPR Cleaner to release locked handles safely.
Sub-Folders & Cache Locations Breakdown for Bun JavaScript Runtime Package & Install Cache
Modern Windows applications and system services split their disk footprint across multiple sub-directories (`Cache_Data`, `Service Worker\CacheStorage`, `Code Cache`, `GPUCache`, and `Crashpad\reports`). Review which sub-folders inside Bun JavaScript Runtime Package & Install Cache are safe to purge and which files remain protected:
| Sub-Folder / Cache Location | Storage Role | Typical Footprint | Deletion Safety |
|---|---|---|---|
| %UserProfile%\.bun\install\cache | Content-Addressable Package Tarballs, Wheels & Build Artifacts | 1.5 GB – 10.0 GB | 🟢 100% Safe (Re-downloads on Build) |
| %UserProfile%\.bun\install\cache\wrapper\dists / _cacache | Historical Toolchain Distributions & Integrity Blobs | 1.5 GB – 15.0 GB | 🟢 100% Safe |
| %UserProfile%\.bun\install\cache\logs & crashpad | Compiler Diagnostics, Daemon Logs & Crash Snapshots | 150 MB – 2.5 GB | 🟢 100% Safe |
| Source Repositories, .env Files & SSH/API Keys | Working Git Trees, Local Databases & Credentials | Protected | 🔒 Protected — Never Touched |
Frequently Asked Questions
Is it safe to delete Bun JavaScript Runtime Package & Install Cache?
Yes, 100% safe. Safely cleans up stale package downloads and frees gigabytes of SSD space. Bun will re-fetch only needed packages on subsequent install commands.
How much storage space will cleaning Bun JavaScript Runtime Package & Install Cache free up?
Users typically reclaim 1.5 GB – 10.0 GB on Windows 10 and Windows 11 systems depending on update frequency and active cache retention in %UserProfile%\.bun\install\cache.
Will cleaning Bun JavaScript Runtime Package & Install Cache break my active local development projects?
No. Installed dependencies inside your project workspaces remain intact. Cleaning Bun JavaScript Runtime Package & Install Cache only clears the global download cache and historical build artifacts; any package needed in the future is transparently fetched on demand.
Where is Bun JavaScript Runtime Package & Install Cache located on Windows 10 and Windows 11?
It is stored at %UserProfile%\.bun\install\cache. You can paste that path directly into the Windows Run dialog (Win + R) or File Explorer address bar to inspect it.
Manual File Explorer vs. 1-Click SWEEPR Cleanup
| Feature | Manual Deletion | SWEEPR Cleaner |
|---|---|---|
| Locked File Handling | Fails on locked processes | Safe background release |
| Accidental Deletion Risk | Moderate (easy to delete wrong folder) | Zero (strict rules & hashes) |
| Safety Undo Rollback | None (Shift+Del is permanent) | 7-Day Automatic Rollback |
| Time Required | 10–20 minutes per app | < 60 seconds across 40+ areas |
Related Windows Cleanup Guides & Hidden Space Hogs
Clean Bun JavaScript Runtime Package & Install Cache Automatically
SWEEPR Cleaner safely clears Bun JavaScript Runtime Package & Install Cache along with 40+ other hidden app folders and leftover files in one click—covering up to 5 devices (Windows, Mac, Android & iOS) with a 7-day undo safety net.