Node.js Slack Application OAuth Tutorial. Read a detailed write-up https://www.lessrework.com/2017/04/slack-app-tutorial-oauth/
npm install -g ngrok
COOKIE_PASSWORD=<fill in> \
SLACK_SECRET=<fill in> \
SLACK_CLIENT_ID=<fill in> \
SLACK_VERIFICATION_TOKEN=<fill in> \
npm run start
ngrok http 3000
- Navigate to host/authenticate
- Navigate to your host.