v0.157.0

Likely to cause new Flow errors:

• Add a new error for unreachable code occuring in a loop after a conditional with mixed break and continue branches.

New Features:

• LSP extract to function/method/constant/class fields/type alias is enabled by default. These refactors will show up under after selecting some code. They can be disabled by adding experimental.refactor=false to the .flowconfig.
• Add an eslint plugin, eslint-plugin-fb-flow, for eslint rules from the Flow team. The first rule is use-indexed-access-type to encourage the use of indexed access types (https://flow.org/en/docs/types/indexed-access/).
• Add another eslint rule to lint against explicit exact by default syntax (fixes #8612).
• Add a command to update-suppressions to the flow tool (fixes #8384).

Library Definitions:

• Better coverage of the MediaTrackSettings API.
• Improve types for ResizeObserver (fixes #8693).

Misc:

• Upgrade to OCaml 4.10.2.