async function tableList(dbName) 
{
	return new Promise((resolve, reject) => 
	{
		const request = indexedDB.open(dbName);
	
		request.onsuccess = function(event) 
		{
			const db = event.target.result;
			const objectStoreNames = Array.from(db.objectStoreNames);
			db.close();
			resolve(objectStoreNames);
		};
	
		request.onerror = function(event) 
		{
			reject(event.target.error);
		};
	});
}
function tableListArray(dbName)
{
	tableList(dbName)
	.then((tables) => 
	{
		printArray(tables)
	})
	.catch((error) => 
	{
		console.error("error:", error);
		return null;
	});
}
function printArray(ary)
{
	let count = ary.length;
	if(count === null)
	{
		console.log("ary is null");
		return;
	}
	for(i=0; i < count; i++)
	{
		console.log("i:" + i + " ary:" + ary[i]);
	}
}