facebook/flow 0.192.0

on GitHub

Notable changes:

• The exact_empty_objects flag and the annotate_empty_object codemod are now deleted, See https://medium.com/flow-type/improved-handling-of-the-empty-object-in-flow-ead91887e40c for more details.
• We have announced in a previous blog post that we are working on a new inference mode in Flow. Now the inference mode is mostly working, but there might still be some bugs remaining. You can try it out by adding inference_mode=experimental.lti to your flowconfig.

Likely to cause new Flow errors:

• Unknown computed properties assignments are now completely banned. Previously, they were still allowed if the object is inexact.
• cannot-resolve-name errors now are emitted for every use of an undefined variable, not just the first.

New Features:

• Added an experimental flow lint for unused promises in async scope. You can enable it by adding unused-promise-in-async-scope in the lint section of your flowconfig.

Misc:

• annotate-use-state and annotate-use-callback codemod commands have been merged into annotate-react-hooks4
• Added an experimental "scm" saved state fetcher, which selects a saved state based on your currently source control revision.

Library Definitions:

• Added support for Array.prototype.at
• Fixed WeakSet type parameter bound to be interface {}