Create a type with only nullable properties from another

index.ts

interface VeryStrict {
    name: string,
    value: any
}

type Whatever = {
    [K in keyof VeryStrict]?: VeryStrict[K]
};

const defaults: VeryStrict = {
    name: 'default',
    value: 123
};

// Does not work
// const o1: VeryStrict = {};

const o2: Whatever = {
    name: 'works'
};

// Doesn't work either
// const o3: VeryStrict = o2;

// combine both types
const o4: VeryStrict = Object.assign({}, defaults, o2);