TypeScript v4.9
2022/11/15
release note
beta
satisfies operator
WIP
Unlisted Property Narrowing with the in Operator
https://twitter.com/suin/status/1576753008574021632
https://azukiazusa.dev/blog/typescript-4-9-in/
https://zenn.dev/uhyo/articles/blueberry-book-catchup#in演算子の機能強化
Auto-Accessors in Classes
https://zenn.dev/uhyo/articles/blueberry-book-catchup#accessor-キーワードの追加
accessor decoratorとは関係ない？
Checks For Equality on NaN
File-Watching Now Uses File System Events
"Remove Unused Imports" and "Sort Imports" Commands for Editors
Go-to-Definition on return Keywords
Performance Improvements
Correctness Fixes and Breaking Changes
https://twitter.com/__gfx__/status/1599580943559561216
https://www.prisma.io/blog/satisfies-operator-ur8ys8ccq7zb