webpack/examples/top-level-await/db-connection.js

const connectToDB = async url => {
	await new Promise(r => setTimeout(r, 1000));
};

// This is a top-level-await
await connectToDB("my-sql://example.com");

export const dbCall = async data => {
	// This is a normal await, because it's in an async function
	await new Promise(r => setTimeout(r, 100));
	return "fake data";
};

export const close = () => {
	console.log("closes the DB connection");
};