get_user_by()

get_user_by( string $field, int|string $value ): WP_User|false

function get_user_by( $field, $value ) {
	$userdata = WP_User::get_data_by( $field, $value );

	if ( ! $userdata ) {
		return false;
	}

	$user = new WP_User();
	$user->init( $userdata );

	return $user;
}