Example 4-5. Hiding the bound context from calling code

This example has been corrected from the original version by passing null to bind() in printer.shutdown.

printer.shutdown = function () {
	return this.connect().bind(this).then(function () {
		//...
	}).then(function () {
		//...
	}).bind(null); // mask the previous binding
};

printer.shutdown().then(function () {
	console.log('Not running in the context of the printer: ' + this !== printer);
});

// Console.output:
// This code is not running in the context of the printer: true