Promises have a way to do this: rejecting a promise. Merchants handle promise rejection via `.catch(errorHandler)` call. Let's specify that user dismissal of the dialog should trigger rejection of the `.show()` promise with a "Request cancelled" message. For example:
```javascript
new PaymentRequest(methodData, details, options)
.show().then(handlePayment)
.catch(error => {
console.log(error); // Should print "Request cancelled" on dismissing the dialog.
});
```
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Received on Wednesday, 28 December 2016 14:03:51 UTC