Likely to cause new Flow errors:
- Signature verification errors will now show up for libdef files
New Features:
- Declaration merging for
declare namespaceis now supported in toplevel library definitions.
Notable bug fixes:
- In component type annotation, the ref prop can now have any type.
Library Definitions:
- Since the last version, most of the bundled libdefs will no longer be maintained and shipped with Flow. Going forward, they should be downloaded from flow-typed. Starting from this version, we will also no longer ship a set of precise typing definition for jsx intrinsics. To maintain the same behavior as before, you should have a
flow-typed.config.jsonin the root of your project with the following content:
{
"env": ["node", "dom", "bom", "intl", "cssom", "indexeddb", "serviceworkers", "webassembly", "jsx"]
}