facebook/flow v0.107.0

on GitHub

New Features:

• Implement type refinements for property accesses through brackets (#7597, thanks @goodmind).

Notable bug fixes:

• Fix several issues with autocomplete that prevented optional properties, type aliases to utility types, types with default type arguments, and several other edge cases from being autocompleted.
• Fix Not_expects_bounds crash with %checks (#7863).

Misc:

• Make the LSP textDocument/documentHighlight request serviceable while Flow is in the middle of a recheck.
• Fix minor off-by-one error which caused some parts of traces to be pruned when using the --traces flag.
• A minor improvement in error messages when undefined is involved.
• Reduce memory usage slightly when abstract locations are enabled.
• Prevent log spew when flow lsp is started while the server is initializing.
• Improve completeness of sighashing. We recently observed an incremental bug caused by incomplete sighashing. This speculatively addresses similar potentially problematic cases.

Library Definitions:

• Add webkitGetAsEntry to DataTransferItem.
• Switch several properties to optional in Notification and NotificationOptions (#8032, thanks @pauldijou).
• Map/Set fix symbols (#7560, thanks @goodmind).
• Fix Array#reduce and Array#reduceRight (#7902, thanks @goodmind).