async function createMyConnection() {

    await createConnection({
        driver: {
            type: "postgres",
            host: "myHost",
            port: 5432,
            username: "myUsername",
            password: "mypassword",
            database: "mydatabase"
        },
        entities: [
            Photo, PhotoMetadata, Author, Album
        ],
        autoSchemaSync: true,
    });

    let connection = getConnectionManager().get();

    let photo = new Photo();
    photo.name = "Me and Bears";
    photo.description = "I am near polar bear222";
    photo.fileName = "photo-with-bears.jpg";
    photo.views = 1;
    photo.isPublished = true;

    let metadata = new PhotoMetadata();
    metadata.height = 640;
    metadata.width = 480;
    metadata.compressed = true;
    metadata.comment = "cybershoot";
    metadata.orientation = "portait";

    photo.metadata = metadata;

    let author = new Author();
    author.name = 'Kaveh';

    photo.author = author;

    let album = new Album();
    album.name = 'MyAlbum1';

    let album2 = new Album();
    album.name = 'MyAlbum2';

    photo.albums = [album, album2];

    connection.entityManager
        .persist(photo)
        .then(p => {
            console.log("Photo has been saved");
            connection.close();
        })
        .catch(() => {
            connection.close();
        });
}

createMyConnection();

(node:540) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): error: syntax error at or near ")"