Dmilgram/invalid sources - raise custom error

[ddmilgram]

Description of the change

We are seeing this Rollbar issue due to invalid source maps with non string values inside the sources array. So from our fork we want to raise a custom error that will be handled from the mox side, letting the user know about their wrong sourcemap.

Type of change

• Bug fix (non-breaking change that fixes an issue)

Related issues

this Rollbar issue

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers assigned
• Issue from task tracker has a link to this pull request
• Changes have been reviewed by at least one other engineer

[brianr]

Looks good to me 👍