Example 5-4. Promise chains built across functions

This example has been corrected from the original version by replacing the semicolon after the connect function declaration with a comma and removing the semicolon after the query function declaration.

var db = {
	connect: function () {/*...*/},
	query: function () {/*...*/}
};

function getReportData() {
	return db.connect().then(function (connection) {
		return db.query(connection, 'select report data');
	});
}

getReportData().then(function (data) {
	data.sort();
	console.log(data);
}).catch(function (err) {
	console.log('Unable to show data');
});