import type { Primitive } from './literal.js';

export type DeepWriteable<T> = T extends Primitive
	? T
	: T extends ReadonlyArray<infer U>
		? DeepWriteableArray<U>
		: T extends ReadonlyMap<infer K, infer V>
			? DeepWriteableMap<K, V>
			: T extends ReadonlySet<infer M>
				? DeepWriteableSet<M>
				: DeepWriteableObject<T>;

type DeepWriteableArray<T> = Array<DeepWriteable<T>>;
type DeepWriteableMap<K, V> = Map<DeepWriteable<K>, DeepWriteable<V>>;
type DeepWriteableSet<T> = Set<DeepWriteable<T>>;
type DeepWriteableObject<T> = { -readonly [K in keyof T]: DeepWriteable<T[K]> };

export type Writeable<T> = T extends Primitive
	? T
	: T extends ReadonlyArray<infer U>
		? Array<U>
		: T extends ReadonlyMap<infer K, infer V>
			? Map<K, V>
			: T extends ReadonlySet<infer M>
				? Set<M>
				: { -readonly [K in keyof T]: T[K] };