[rush] Use AsyncRecycler for autoinstaller cleanup#5756
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kevin-y-ang wants to merge 4 commits intomicrosoft:mainfrom
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[rush] Use AsyncRecycler for autoinstaller cleanup#5756kevin-y-ang wants to merge 4 commits intomicrosoft:mainfrom
kevin-y-ang wants to merge 4 commits intomicrosoft:mainfrom
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...on/changes/@microsoft/rush/autoinstaller-move-node-modules-to-recycler_2026-04-07-18-05.json
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- Use string interpolation instead of path.join - Avoid race condition from checking if file exists before operating on it Co-authored-by: Ian Clanton-Thuon <iclanton@users.noreply.github.com>
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Summary
Deleting old files from **/node_modulesis a process invoked for every autoinstaller install.For large rush repos, this takes a lot of time. On my computer this process can take half a minute.
This fixes autoinstaller cleanup so stale
node_modulesfolders are moved into Rush's recycler before deletion instead of being cleared in place.Details
When an autoinstaller install is invalidated, Rush previously called
FileSystem.ensureEmptyFolder()on the autoinstallernode_modulesfolder. This change switches that path toAsyncRecycler, which first renames the folder intocommon/temp/rush-recyclerand then starts asynchronous deletion. That keeps the cleanup path cross-platform and consistent with other Rush cleanup flows.I also added a targeted unit test that seeds an autoinstaller
node_modulestree, runsprepareAsync(), and verifies the old tree was moved into the recycler before reinstall.This does not change public APIs.
How it was tested
pnpm --dir libraries/rush-lib exec heft build --cleanpnpm --dir libraries/rush-lib exec heft test --clean --test-path-pattern Autoinstaller.test