TypeScript - create variable using generic Object<T> type

In this short article we would like to show how create variable using generic Object<T> type in TypeScript.

By default, TypeScript doesn't provide generic Object<T> type.

Simple solution

1. Create src/declaration.d.ts file and place there the following source code:

interface ObjectConstructor {
    <T>(object: T): T;
    new <T>(object: T): T;
}

declare Object: ObjectConstructor;

2. From now you can use Object<T> type int your project, e.g.:

// ...

type User = {
    id: number;
    name: string;
    age: number;
};

// ...

const user = new Object<User>({
    id: 1,          // TypeScript compiler will force programmer to use proper fields here
    name: 'John',   // TypeScript compiler will force programmer to use proper fields here
    age: 23         // TypeScript compiler will force programmer to use proper fields here
});

// ...