---@diagnostic disable: missing-return, lowercase-global

---@param unit string
---@return string name
---@return string subText
---@return string text
---@return string texture
---@return number startTime
---@return number endTime
---@return 1nil isTradeSkill
---@return number castID
---@return 1nil notInterruptible
---Returns information about the spell a unit is currently casting
function UnitCastingInfo(unit) end