type Snapshot<T> = T extends Primitive
		? T
		: T extends Cloneable
			? NonReactive<T>
			: T extends { toJSON(): infer R }
				? R
				: T extends readonly unknown[]
					? { [K in keyof T]: Snapshot<T[K]> }
					: T extends Array<infer U>
						? Array<Snapshot<U>>
						: T extends object
							? T extends { [key: string]: any }
								? { [K in keyof T]: Snapshot<T[K]> }
								: never
							: never;

type Primitive = string | number | boolean | null | undefined;

	/** The things that `structuredClone` can handle — https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm */
	export type Cloneable =
		| ArrayBuffer
		| DataView
		| Date
		| Error
		| Map<any, any>
		| RegExp
		| Set<any>
		| TypedArray
		// web APIs
		| Blob
		| CryptoKey
		| DOMException
		| DOMMatrix
		| DOMMatrixReadOnly
		| DOMPoint
		| DOMPointReadOnly
		| DOMQuad
		| DOMRect
		| DOMRectReadOnly
		| File
		| FileList
		| FileSystemDirectoryHandle
		| FileSystemFileHandle
		| FileSystemHandle
		| ImageBitmap
		| ImageData
		| RTCCertificate
		| VideoFrame;

const object = $state({
    number: 1n,
});

const snapshot = $state.snapshot(object);