key-codes

Install command: 
brew install --cask key-codes

Name: Key Codes

Display key code, unicode value and modifier keys state for any key combination

https://manytricks.com/keycodes/

Cask JSON API: /api/cask/key-codes.json

Cask code: key-codes.rb on GitHub

Current version: 2.2.3

Requirements: macOS >= 10.15

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