facebook/flow v0.214.0

on GitHub

Likely to cause new Flow errors:

• Flow now has stricter behavior with $Call, $ObjMap, $ObjMapi, $ObjMapConst, $TupleMap. Previously hidden type errors might be revealed now.
• You can no longer disable tuple_ehancements, conditional_type, mapped_type, type_guards in flowconfig, since these options have been removed. They were enabled by default since v0.212.0.

IDE:

• We now provide a new refactor that extracts JSX elements into a new React component.
• Extract to constant refactors now works for nested JSX elements and fragments.

Notable bug fixes:

• Added default type arguments for the built-in React$AbstractComponent to match the React.AbstractComponent type alias in our libdefs. [try-flow]

Library Definitions:

• Added parseArgs to the Node.js util module library definition