typecases = [ Expect<Equal<Test1, "name" | "country">>, Expect<Equal<Test2, "The length of `StartChar` cannot be greater than 1">>, Expect<Equal<Test3, "The length of `EndChar` cannot be greater than 1">>, Expect<Equal<Test4, "`StartChar` cannot be empty">>, Expect<Equal<Test5, "`EndChar` cannot be empty">>, ];
是否为正整数
boolean