firefox@developer-edition

Install command: 
brew install --cask firefox@developer-edition

Name: Mozilla Firefox Developer Edition

Web browser

https://www.mozilla.org/firefox/developer/

Cask JSON API: /api/cask/firefox@developer-edition.json

Cask code: firefox@developer-edition.rb on GitHub

Current version: 143.0b9

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
firefox@developer-edition 1,016
Installs (90 days)
firefox@developer-edition 3,118
Installs (365 days)
firefox@developer-edition 14,062