This uses sentry internally, but only sends things to the server when
configured that way.

Neuber, Eugen Ramon authored 5 years ago and Reiter, Christoph committed 4 years ago

see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/readyState

customElements isn't defined there

This means less dom change on load

So that packages depending on it install it as well

node-resolve wasn't limited to the local node_modules and picked up the
dependency from another package on my machine.

So that rollup can do tree shaking and report import errors.