vanillajs

Convert the source file to typescript, which will be compiled in the rollup build step.
While we currently use .ts files, typehinting etc. is not used in the files.

If you want to help:
Just start adding typehints to any file that is still missing them or improve the ones that already have them. Feel free to send a PR for files even if only a part of them is converted.

Any plans to add positioning functionality to the component?

I know this involves a bit of work to setup containers for each corner of the window, but it would be nice to be able to use the notify function to add a position property.

Hopefully I can fork this when I wrap up a big project in the Spring, and maybe submit a pull request if "beyonk" hasn't had a chance to work on this.

Allow folks to pass a custom function to change the default display

@tchx84 👀