Hi @dennisfrostlander 👋, thanks for your contribution 👍

Even though there is no official specification for file extensions, the most popular and well-known ones should be added for sure 😄
The project exists for a while and does not require to be updated often so “new“ languages like TypeScript, that introduced new extensions like *.ts, are not supported yet and contributions to do so are always welcome.

While we're at it we can also add extensions for React JSX (*.jsx) as well as its TypeScript variant *.tsx and declarations (*.d.ts).

Should we use the 256-color scheme for the file extensions?

Those are typically specified as attr;38;5;color_number, for example like this: https://github.com/seebi/dircolors-solarized/blob/master/dircolors.256dark#L164-L194

We could choose the colors from the cheatsheet, which are closest to the Nord pallete.

Hmm, maybe not (about 256-color scheme). We will probably not use more than 8 distinct colors for file extensions anyway, so we can just stick to the default 8 terminal colors and then let the user customize these colors in the terminal theme itself.