Plugin failing to register if I rebuild the code.

[gainggs]

Hey - thanks for keeping this rolling, especially for Video JS 8.

I've got everything working OK if I import the module contained in the dist of this commit, however if I download the codebase, rebuild the plugin and then import it I get an error.

I'm not sure if I'm missing a step during the build, or doing something wrong to end up with code that breaks. For context, I'm:

1. Downloading the ZIP
2. Unzipping
3. Running npm install
4. Running npm build

Everything seems to build OK and the dist folder is populated as expected, however when I include this new build I get the following console error:

Would welcome any thoughts!