Defining custom cache in TypeScript

[Richienb]

Neither CacheItem, nor CacheLike are exported.
So, in order to define a custom cache, I have to manually copy the types:

// https://github.com/sindresorhus/memoize/blob/4c2b35fad5841cea20274b461fe2528fa40a692d/index.ts#L12-L15
type CacheItem<ValueType> = {
	data: ValueType;
	maxAge: number;
};

const cacheMap = new Map<Key, CacheItem<Value>>();

or, a bit nicer:

// https://github.com/sindresorhus/memoize/blob/4c2b35fad5841cea20274b461fe2528fa40a692d/index.ts#L12C1-L23C3
type CacheItem<ValueType> = {
	data: ValueType;
	maxAge: number;
};

type CacheLike<KeyType, ValueType> = {
	has: (key: KeyType) => boolean;
	get: (key: KeyType) => CacheItem<ValueType> | undefined;
	set: (key: KeyType, value: CacheItem<ValueType>) => void;
	delete: (key: KeyType) => void;
	clear?: () => void;
};

const cacheMap: CacheLike<Key, Value> = new Map();

Could we have some exported types?