TypeScript v4.1
release note
Template Literal Types
文字列のやつ
Key Remapping in Mapped Types
P in 型 as ..
noUncheckedIndexedAccess
インデックスアクセスのやつ
#WIP
Recursive Conditional Types
paths without baseUrl
checkJs Implies allowJs
React 17 JSX Factories
Editor Support for the JSDoc @see Tag
Breaking Changes