Type variables with value restriction Type variables with value restriction By default, a type variable can be replaced with any type. However, sometimesit’s useful to have a t...
Optional types and the None type Optional types and the None type You can use the Optional type modifier to define a type variantthat allows None , such as Optional[int] (Op...
JSDoc types are used for type information Properties are inferred from assignments in class bodies Constructor functions are equivalent to classes CommonJS modules are supported...