source: node_modules/type-fest/source/merge.d.ts

import {Except} from './except';

/**
Merge two types into a new type. Keys of the second type overrides keys of the first type.

@example
```
import {Merge} from 'type-fest';

type Foo = {
        a: number;
        b: string;
};

type Bar = {
        b: number;
};

const ab: Merge<Foo, Bar> = {a: 1, b: 2};
```
*/
export type Merge<FirstType, SecondType> = Except<FirstType, Extract<keyof FirstType, keyof SecondType>> & SecondType;