es404020Record
Constructs an object type whose property keys are Keys and whose property values are Type. This utility can be used to map the properties of a type to another type.
Example
interface CatInfo {
age: number;
breed: string;
}
type CatName = "miffy" | "boris" | "mordred";
const cats: Record<CatName, CatInfo> = {
miffy: { age: 10, breed: "Persian" },
boris: { age: 5, breed: "Maine Coon" },
mordred: { age: 16, breed: "British Shorthair" },
};
cats.boris;
const cats: Record<CatName, CatInfo>
Released:
typescript 2.1
reference :Typescript offical documentation.
