vfs: support recursive readdir in ZipProvider - #66127
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ZipProvider threw ERR_METHOD_NOT_IMPLEMENTED for readdir() with
`{ recursive: true }`, although an archive already stores every member
under its full path, so a recursive listing is the same scan of the
entry names as a flat one, keeping the whole path below the directory
instead of only its first segment.
List every member below the directory, and every directory their paths
pass through, whether the archive holds an entry for it or only implies
it. Names are relative to the listed directory and joined with `/`, as
MemoryProvider returns them, so VirtualFileSystem reports the right
parentPath for each Dirent. A name that is both a member and a
directory is listed once, as a directory, as a flat listing already
did.
The entries are now collected in a map rather than looked up in an
array, so listing a directory no longer takes time quadratic in the
number of its children.
Signed-off-by: Philipp Dunkel <pip@pipobscure.com>
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #66127 +/- ##
==========================================
+ Coverage 90.27% 90.28% +0.01%
==========================================
Files 790 790
Lines 271651 271784 +133
Branches 51842 51876 +34
==========================================
+ Hits 245228 245380 +152
+ Misses 16928 16896 -32
- Partials 9495 9508 +13
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jasnell
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Sep 19, 2026
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Can someone please restart the lint and add |
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I have no idea what the failing CI test is. I did run all tests on Windows & Linux, so I’m assuming it’s a flake until hearing otherwise. If someone can tell me, I’d appreciate it. |
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@richardlau can you have a look at CI for me please. Thanks! |
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ZipProvider threw ERR_METHOD_NOT_IMPLEMENTED for readdir() with
{ recursive: true }, although an archive already stores every member under its full path, so a recursive listing is the same scan of the entry names as a flat one, keeping the whole path below the directory instead of only its first segment.List every member below the directory, and every directory their paths pass through, whether the archive holds an entry for it or only implies it. Names are relative to the listed directory and joined with
/, as MemoryProvider returns them, so VirtualFileSystem reports the right parentPath for each Dirent. A name that is both a member and a directory is listed once, as a directory, as a flat listing already did.The entries are now collected in a map rather than looked up in an array, so listing a directory no longer takes time quadratic in the number of its children.