@lindeneg/types

Utility types.

Installation

yarn add -D @lindeneg/types

Usage

We'll use the this User type in the following examples:

type User = {
  id: number;
  name: {
    first: string;
    last: string;
  };
  address: {
    street: string;
    city: string;
  };
};

RecursivePartialObj

Partial but recursive.

import type { RecursivePartialObj } from '@lindeneg/types';

type PartialUser = RecursivePartialObj<User>;
// becomes:
{
  id?: number;
  name?: {
    first?: string;
    last?: string;
  };
  address?: {
    street?: string;
    city?: string;
  };
};

Substitute

Substitute types in an object.

import type { Substitute } from '@lindeneg/types';

type SubstitutedUser = Substitute<User, { name: [string, string] }>;
// becomes:
{
  id: number;
  name: [string, string];
  address: {
    street: string;
    city: string;
  }
}

UniqueArray

Substitute a keys type in an object with another type.

import type { UniqueArray } from '@lindeneg/types';

type Arr = UniqueArray<[1, 1, 2, 3, 4, 4, 5, 5, 5, 6, 7]>;

// becomes:
[1, 2, 3, 4, 5, 6, 7];

SafeOmit

Omit but with enhanced type-safety.

import type { SafeOmit } from '@lindeneg/types';

type OmittedUser = SafeOmit<User, 'name' | 'address'>;

// becomes:
{
  id: string;
}