Uncaught TypeError: Illegal invocation

[himynameisdave]

Describe the bug

When using withPreventDefault in a standard/template Rollup + Svelte project, I get the following error: Uncaught TypeError: Illegal invocation

It seems to be pointing to this line in callIfExists, which the compiler spits out as this:

return (_a = event === null || event === void 0 ? void 0 : event[method]) === null || _a === void 0 ? void 0 : _a();

Where invoking _a() seems to be causing the bug.

To Reproduce
Steps to reproduce the behavior:

1. Clone the svelte template repo.
2. yarn add browser-event-utils@next
3. Wrap an event handler with withPreventDefault:

<script>
  import { withPreventDefault } from 'browser-event-utils';

  const handleDrop = withPreventDefault(() => { //... });
</script>

<div on:drop={handleDrop}>
  Drop here!
</div>

1. Invoke the event, you should see the error.

Expected behavior

It should just call the expected method, no errors.

Versions (please complete the following information):

• browser-event-utils Version: [eg: v3.0.0-beta.5]
• Browser & Version: Google Chrome 83.0.4103.106
• Framework version (if applicable) [eg: svelte@3.23.2]
• (Optionally) NodeJS Version: v12.16.3

Additional context or comments
Add any other context about the problem here.