Intent of zip.ts ×11

All 4 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 4 tests
- base/ 4 tests
  - test/ 4 tests
    
    node/ 4 tests
    
    zip/ 4 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/zip/zip.test|title=Zip zip should clamp a prefix larger than the current file size|occurrence=1 Inherited zip.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/zip/zip.test|title=Zip zip should skip a vanished streamed source without failing the archive|occurrence=1 Inherited zip.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/zip/zip.test|title=Zip zip should stream a fixed prefix of a local file|occurrence=1 Inherited zip.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/zip/zip.test|title=Zip zip should write an empty entry for a zero-length prefix|occurrence=1 Inherited zip.ts ×2