facebook/flow v0.262.0

on GitHub

Likely to cause new Flow errors:

• Referencing React$Component directly will now be an error.
• Use of React$ComponentType, React$Context and React$RefSetter will now trigger internal-type errors.

New Features:

• Added types for JSX intrinsics, which will cause new errors and show autocomplete for DOM intrinsics like div

Notable bug fixes:

• Replace incorrect definition for ClientRect and ClientRectList with aliases to DOMRect and DOMRectList
  This fixes the type definitions for the DOM APIs in Flow, but replacing an nonexistent globals ClientRect and ClientRectList types with just an alias to DOMRect and DOMRectList.
• fixed a bug that caused spurious errors on rest array assignments (e.g. try-Flow).
• When a library definition file has changed, Flow will no longer just stop the server. Instead, Flow will properly recheck everything, even under lazy mode.
• We now allow something of type React.ComponentType<{}> to be a subtype of component()

IDE:

• Component syntax components will now show up in document symbols

Library Definitions:

• Most of the bundled libdefs will no longer be maintained and shipped with Flow. Going forward, they should be downloaded from flow-typed. To maintain the same behavior as before, you should have a flow-typed.config.json in the root of your project with the following content:

{
  "env": ["node", "dom", "bom", "intl", "cssom", "indexeddb", "serviceworkers", "webassembly"]
}