kmalakoff / kmalakoff/zip-iterator

zip-iterator fails to extract archive

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TypeScript
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Description

This issue came up via the module usage in fast-extract and was first reported at kmalakoff/fast-extract#83:

On MacOS 26, running Node v20.19.5, with zip-iterator@3.1.1, the archive found at https://github.com/pyocd/pyOCD/releases/download/v0.42.0/pyocd-macos-0.42.0.zip is suffering from the following exception:

Exception has occurred: Error: unexpected end of file
  at genericNodeError (node:internal/errors:984:15)
    at wrappedFn (node:internal/errors:538:14)
    at Zlib.zlibOnError [as onerror] (node:zlib:189:17)
    at Zlib.callbackTrampoline (node:internal/async_hooks:130:17)
    at processChunkSync (node:zlib:415:12)
    at zlibBufferSync (node:zlib:178:12)
    at Object.syncBufferWrapper [as inflateRawSync] (node:zlib:767:14)
    at inflateRaw (node_modules/extract-base-iterator/dist/esm/shared/compat.js:195:21)
    at ZipExtract.processDeflateDataDescriptor (node_modules/zip-iterator/dist/esm/zip/ZipExtract.js:391:34)
    at ZipExtract.processFileData (node_modules/zip-iterator/dist/esm/zip/ZipExtract.js:304:29)

This problem cannot be reproduced with zip-iterator@2.1.18.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure with Node v20.19.5 and the linked pyOCD archive, then start at ZipExtract.processFileData and processDeflateDataDescriptor in the stack trace. Compare the behavior with zip-iterator@2.1.18 and inspect the related inflateRaw call in extract-base-iterator. Done means the archive extracts successfully on the reported setup.

Written by the indexing model from the issue text.

Assessment

Tech stack
node.js, typescript
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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