You can use this addon for Local 5.x on MacOS ONLY to connect to databases using TablePlus with one click!
Download the .tgz file from a release. Navigate to Local → Addons → Installed → Install from Disk and select the .tgz file. Enable TablePlus and restart Local.
Connect to databases just like you would Sequel Pro or Adminer, but with 
Clone the repo anywhere you want using:
git clone git@github.com:aubreypwd/local-tableplus.git
Then, cd into the repo and run npm run link and it will automatically symlink to your Local addons folder and build the package.
then run npm run build or npm run watch (requires watchexec, install with brew install watchexec) to develop.
master will be the current development version.
Run npm run dist to create a package to distribute to release channels.