v0.207.0

Likely to cause new Flow errors:

• When you pass a generic component type to some React utility type like React.ElementConfig<typeof some_generic_component>, we will replace all the type parameters with their defaults or bounds. It can potentially cause downstream errors. (Example)

New Features:

• Add built-in (intrisic) element names like div to JSX autocomplete
• Mapped types now support operating directly over keys, like TypeScript's Pick and Omit (Example). Mapped type support is still experimental; enable experimental.mapped_type=true to try them.

Notable bug fixes:

• Don't check @noflow files in "all" mode
• Fixed a source of spurious errors when using refined string keys as computed properties in objects (Example)
• Improved Go to Definition on export statements

Library Definitions:

• Added rel as an attribute to HTMLFormElement
• Added WeakRef class definition
• Added ariaHidden DOM property