Custom Keyboard Shortcuts on macOS

I changed my workflow a bit depending on keyboard shortcuts and different desktops and found a nifty tool called Hammerspoon that allows you to create custom keyboard shortcuts. It’s a Lua scripting language that allows you to write small scripts that can be triggered by keyboard shortcuts.

Originally found at Superuser

-- Constants
MODIFIERS = {"cmd"}    -- Modifiers used for app shortcuts

-- App configuration
APPS = {
  {shortcut = "1", name = "Firefox"},
  {shortcut = "2", name = "Alacritty"},
}

-- Bind application shortcuts
for _, app in ipairs(APPS) do
  hs.hotkey.bind(MODIFIERS, app.shortcut, function()
    hs.application.launchOrFocus(app.name)
  end)
end

CMD + 1 will focus on/open Firefox, and CMD + 2 will focus on/open Alacritty.