reserveKeys

reserveKeys(obj, keys)

Creates a new object containing only the specified keys from the original input object. It filters out keys that are not included in the specified array and returns a new object with the reserved keys.

Arguments

• obj (Record<string, any>): The input object to reserve keys from.

• keys (string[]): The array of keys to reserve in the new object.

Returns

• Record<string, any>: A new object containing only the specified keys.

Example

typescript
import { reserveKeys } from 'check-engineering/ts-utils';

const data = {
  name: 'Alice',
  age: 30,
  city: 'New York',
  country: 'USA'
};

const reservedKeys = reserveKeys(data, ['name', 'city']); // ==> { name: 'Alice', city: 'New York' }

Usage

typescript
import { reserveKeys } from 'check-engineering/ts-utils';

const user = {
  id: 456,
  username: 'john_doe',
  email: '[e-mail]',
  role: 'admin'
};

const reservedUserKeys = reserveKeys(user, ['username', 'email']); // ==> { username: 'john_doe', email: '[e-mail]' }

Notes

• The reserveKeys function creates a new object containing only the specified keys from the input object.

• It preserves the original object and returns a new object with the selected key-value pairs.

• This function is useful for creating a subset of an object containing only the necessary keys for specific use cases.