TypeScript 'using' keyword

TypeScript 5.2's New Keyword: 'using' | Total TypeScript

TypeScript 5.2 will introduce a new keyword - 'using' - that you can use to dispose of anything with a Symbol.dispose function when it leaves scope.

example:

Database connections

Managing database connections is a common use case for using in C#.

Without using:
const connection = await getDb();

try {
// Do stuff with connection
} finally {
   await connection.close();
}


With using:
const getConnection = async () => {
const connection = await getDb();

return {
  connection,
  [Symbol.asyncDispose]: async () => {
    await connection.close();
  },
 };
};

{
  await using { connection } = getConnection();
  // Do stuff with connection
} // Automatically closed!