get save files and/or savestates from JS about webretro HOT 2 CLOSED

let wIdb;
function openwIdb() {
	var request = indexedDB.open("webretro", 2);
	request.onsuccess = function(e) {
		wIdb = e.target.result;
	}
}
openwIdb();

function setIdbItem(key, value, customTransaction) {
	(customTransaction || wIdb.transaction("main", "readwrite")).objectStore("main").put({key: key, value: value});
}

function getIdbItem(key, customTransaction) {
	return new Promise(function(resolve) {
		(customTransaction || wIdb.transaction("main", "readwrite")).objectStore("main").get(key).onsuccess = function(e) {
			resolve(e.target.result ? e.target.result.value : null);
		}
	});
}

function getAllIdbItems(customTransaction) {
	return new Promise(function(resolve) {
		(customTransaction || wIdb.transaction("main", "readwrite")).objectStore("main").getAll().onsuccess = function(e) {
			resolve(e.target.result ? e.target.result : null);
		}
	});
}

function removeIdbItem(key, customTransaction) {
	(customTransaction || wIdb.transaction("main", "readwrite")).objectStore("main").delete(key);
}