Flow Files

Likely to cause new Flow errors:

• Imports of react module will always resolve to Flow's builtin react type definitions. If you use a custom react typing module, you might see errors.

Notable bug fixes:

• Preserve Flow WASM linker settings, including memory growth.
• Correct parser ranges for unique symbol types and signed mapped-property variance.

Parser:

• Rename the ImportType ESTree field from argument to source.
• Preserve computed object type property keys in parser output.

Library Definitions:

• Flow will now include DOM typing from TypeScript's lib.dom.d.ts by default. If your project is not supposed to run in the browser, you can switch back to the old behavior with builtin_lib=core-only in flowconfig's [options] section.
• Flow's Iterable and ArrayLike type now align with those from TypeScript. You might see errors when your existing code assumes the old typing.