ts-toolbelt
Version:
TypeScript's largest utility library
24 lines (23 loc) • 482 B
TypeScript
import { Equals } from '../Any/Equals';
/**
* @hidden
*/
export declare type _WritableKeys<O extends object> = {
[K in keyof O]-?: {
1: K;
0: never;
}[Equals<{
-readonly [Q in K]: O[K];
}, {
[Q in K]: O[K];
}>];
}[keyof O];
/**
* Get the keys of `O` that are writable
* @param O
* @returns [[Key]]
* @example
* ```ts
* ```
*/
export declare type WritableKeys<O extends object> = O extends unknown ? _WritableKeys<O> : never;