Design Meeting Notes, 07/22/2016 · Issue #9935 · microsoft/TypeScript

Number, enum, and boolean literal types #9407 Number / enum / boolean literals New concept: Unit type A type with a single value (e.g. null, undefined, true) e.g. Boolean is a union of the two unit types true and false e.g. enums are unions of their constituent unit types corresponding to each member Literal types are subtypes of their respective primitives, of course When do we treat a string lit

[vvakame]

Unit types という名前になるんか