This tool runs in the background and asks Twitch every 5 seconds for a new follower list and compares it to the version it got before. It then sends follows and unfollows to a Discord webhook depending on the configuration inside the .env file or specified as environment variables.
Follows could also be through EventSub but there is no event for Unfollows and that is the reason this tool exists.
Server Settings -> Integrations -> Webhooks or Channel Settings -> Integrations -> Webhooks)example.env to .env if you want to configure the tool in a file (you can skip this step if you want to use environment variables).env file or set environment variables with the keys you'll find in example.envnpm i or npm installnpm start