If elt doesn't exist the console returns multiple errors

vvo / in-viewport

Get a callback when any element becomes visible in a viewport (body or custom viewport)

MIT License

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If elt doesn't exist the console returns multiple errors #25

Closed paulincai closed 7 years ago

paulincai commented 7 years ago

Example error: Uncaught TypeError: Cannot read property 'offsetWidth' of undefined. I am not sure what is the exact intention there and if !elt should be covered as well but at least it looks that we need to back up on a situation when elt is undefined.