Clean up spill directories left after an interrupted download or archive extraction during store prune. Reuse the existing store-directory scan and removal helpers without adding install-time work.
Only remove matching directories when their own mtime and the mtimes of their immediate files are more than 24 hours old. Checking files preserves an old directory whose download is still writing. Stream file entries and check one directory and file at a time to bound pending filesystem work. Stop scanning a directory after its first recent file. Skip symlinks and tolerate ENOENT when another process finishes cleanup first.
Age is a conservative heuristic, not a process-liveness check: an install suspended for over 24 hours without filesystem activity can lose its spill directory.
Add regression coverage for stale, recent, empty, and unrelated entries, symlinks, missing stores, recent writes in old directories, and expected versus unexpected filesystem errors. Close SQLite fixture handles before removing test directories for Windows compatibility.
Closespnpm/tasks#109.
Zoltan Kochan
daf834397a