UnknownRecord

An object with unknown keys and unknown values.

type Data = UnknownRecord;

Usage

UnknownRecord

Use it instead of {}, which accepts every non-nullish value including numbers and strings. Values are unknown, so reading one forces a check first.

import type { UnknownRecord } from 'es-toolkit/types';

function log(data: UnknownRecord) {
  if (typeof data.id === 'string') {
    console.log(data.id);
  }
}

log({ id: '1' }); // ok

// log(42); // error, while `{}` would have allowed it

Type Parameters

• Only types with an index signature are assignable. An interface declares its keys one by one and is rejected, so accept object when the caller may pass one, or spread it at the call site.