Internal exception when a breadcrumb has data with `url: null`

[StevePotter]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
If you have a null data property called 'url', the library has internal errors.

Just try this:

Raven.captureMessage('Installation referral url received.', {
  level: 'info',
  tags: { installationReferralUrl: true },
  extra: { url: null },
})

The exception comes from:
https://github.com/getsentry/raven-js/blob/master/src/raven.js#L1609

Just put a check for a null value or modify truncate to return empty string for null values

What is the expected behavior?
It will not have said error.

React Native, raven-js v3.13.1

[kamilogorek]

Can you provide an actual error?

Code you pointed already guards for situations like the one above (simplified example):

var urlProp = 'url';
var data = {
  url: null
}
if (data.hasOwnProperty(urlProp) && data[urlProp]) {
  throw new Error('Look ma, no url prop')
}

// this will not throw, as data[urlProp] returns null, and if statement won't trigger the code inside it

[StevePotter]

@kamilogorek you are right. Our version was slightly out of date and didn't have the guard code. We just need to upgrade. Thanks!