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omit ​

Problem ​

You need to create a copy of an object with certain keys removed — for example stripping password before returning a user record.

Solution ​

Use omit(obj, keys) to return a new object without the specified keys.

ts
import { omit } from '@vielzeug/arsenal';

const user = { id: 1, name: 'Alice', password: 'secret', role: 'admin' };
omit(user, ['password']);
// { id: 1, name: 'Alice', role: 'admin' }

Pitfalls ​

  • Returns a shallow copy — nested values are not cloned.
  • For the inverse (keep a subset of keys), use pick.