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Home / v0.319.0
Name Modified Size InfoDownloads / Week
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flow 2026-06-17 1.5 kB
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flow-win64-v0.319.0.zip 2026-06-17 38.2 MB
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flow-osx-arm64-v0.319.0.zip 2026-06-17 40.5 MB
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flow-linux-arm64-v0.319.0.zip 2026-06-17 46.9 MB
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flow-linux64-v0.319.0.zip 2026-06-17 44.2 MB
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README.md 2026-06-17 890 Bytes
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v0.319.0 source code.tar.gz 2026-06-17 14.7 MB
1 1 weekly downloads
v0.319.0 source code.zip 2026-06-17 21.8 MB
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Totals: 8 Items   206.3 MB 1

Likely to cause new Flow errors:

  • The config for casting_syntax is removed. The as casting syntax is the only supported casting syntax. See Modernizing legacy syntax for migration guidance.
  • Flow will now error on T: B in favor of T extends B in type parameters, and error on +/- in favor of readonly/writeonly . See Modernizing legacy syntax for migration guidance.

New Features:

  • Support the global NaN as a match pattern

Notable bug fixes:

  • Fixed negative bigint literal patterns in match being treated as their positive counterpart
  • ConstructorParameters and InstanceType now work on Class<C>, not just typeof C
  • match instance patterns whose constructor is a subclass of the scrutinee type are no longer incorrectly reported as unused.
Source: README.md, updated 2026-06-17