es-toolkit/src/compat/_internal/IsWritable.d.ts

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

import type { Equals } from './Equals.d.ts';

export type IsWritable<T> = Equals<{ [K in keyof T]: T[K] }, { -readonly [K in keyof T]: T[K] }>;