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

---@enum BuffFilter
---| 'CANCELABLE'
---| 'NOT_CANCELABLE'
---| 'PLAYER'
---| 'RAID'
---@enum DispellType
---| 'POISON'
---| 'DISEASE'
---| 'CURSE'
---| 'MAGIC'

---@param unit string The unit to query (e.g., "player", "target").
---@param index number The index of the aura to query (1-based).
---@param rank string? The rank of the aura (e.g., "Rank 7").
---@param filter BuffFilter? A filter to specify which auras to return (e.g., "PLAYER|RAID").
---@return string #name The name of the aura.
---@return string #rank The rank of the aura, if applicable.
---@return string #icon The path to the icon texture for the aura.
---@return number #count The number of times the aura has been applied.
---@return DispellType #dispelType The type of aura (e.g., "POISON", "MAGIC").
---@return number #duration The total duration of the aura in seconds.
---@return number #expires The time at which the aura will expire.
---@return string #caster The unit that applied the aura.
---@return boolean #isStealable True if the aura can be stolen.
---@return boolean #nameplateShowPersonal True if the aura is visible above nameplates for the caster.
---@return number #spellID The spell ID of the aura.
---@return boolean #canApplyAura True if the player can apply the aura.
---@return boolean #isBossDebuff True if the aura was cast by a boss.
---@return boolean _ Unknown parameter.
---@return boolean nameplateShowAll True if the aura is visible above nameplates for all players.
---@return number timeMod The modified time remaining on the aura.
---@return number value1 Value of variable effect 1 of the aura.
---@return number value2 Value of variable effect 2 of the aura.
---@return number value3 Value of variable effect 3 of the aura.
---@overload fun(unit: string, name: string)
--- Returns information about a buff on a unit. This function is an alias for UnitAura() with a built-in HELPFUL filter.
function UnitBuff(unit, index, rank, filter) end