added lua check CI step (#49)

Reviewed-on: #49
Co-authored-by: dutchie031 <timrorije@gmail.com>

src/classes/capClasses/airGroups/AirGroup.lua

@@ -1,12 +1,11 @@
 local SpearheadEvents = require("classes.spearhead_events")
 local RTBMission = require("classes.capClasses.taskings.RTB")
 local Util = require("classes.util.Util")
-local DcsUtil = require("classes.util.DcsUtil")
 local GlobalConfig = require("classes.configuration.GlobalConfig")
 local CustomDrawing = require("classes.stageClasses.drawings.CustomDrawing")
 local DrawingHelper = require("classes.stageClasses.drawings.helper.DrawingHelper")
 
----@class AirGroup : OnUnitLostListener
+---@class AirGroup : OnUnitLostListener, OnGroupRTBListener, OnGroupRTBInTenListener, OnLandEventListener, OnGroupOnStationListener
 ---@field protected _logger Logger
 ---@field protected _groupName string
 ---@field protected _groupType AirGroupType
@@ -81,7 +80,7 @@ function AirGroup:SetMission(mission)
         end
     end
 
-    local setMissionDelayed = function(data, time)
+    local setMissionDelayed = function(data, _)
         data.self:SetMissionPrivate(data.mission)
     end
 
@@ -108,8 +107,9 @@ function AirGroup:SetMissionPrivate(mission)
 
             local points = {}
             if mission and mission.params and mission.params.route and mission.params.route.points then
-                for _, wp in pairs(mission.params.route.points) do
-                    if wp.x and wp.y then
+                local routePoints = mission.params.route.points --[[@as Array<Vec2> ]]
+                for _, wp in pairs(routePoints) do
+                    if wp and wp.x and wp.y then
                         table.insert(points, { x = wp.x, y = wp.y })
                     end
                 end
@@ -199,6 +199,8 @@ function AirGroup:SpawnInternal(force, withoutLoadout)
     end
 
     ---@param selfA AirGroup
+    ---@param time number
+    ---@return number?
     local function CheckLivenessTask(selfA, time)
         local interval = selfA:CheckLiveness()
         if not interval then return end
@@ -264,6 +266,7 @@ function AirGroup:OnLastUnitLanded()
 
     ---@param data CheckGroupForRestartData
     ---@param time number
+    ---@return number?
     local checkGroupForRestart = function(data, time)
         local group = Group.getByName(data.self:GetName())
         if not group then
@@ -357,7 +360,7 @@ do --- RESPAWN FUNCTIONS
         self:SetState("Dead")
 
         ---@param selfA AirGroup
-        local respawnTask = function(selfA, time)
+        local respawnTask = function(selfA, _)
             selfA:StartRepair()
         end
 
@@ -376,8 +379,7 @@ do --- RESPAWN FUNCTIONS
         end
 
         ---comment
-        ---@param selfA AirGroup
-        local rearmTask = function(selfA, time)
+        local rearmTask = function(_, _)
             self:StartRearm()
         end
 
@@ -402,7 +404,7 @@ do --- RESPAWN FUNCTIONS
         end
 
         ---@param selfA AirGroup
-        local rearmTask = function(selfA, time)
+        local rearmTask = function(selfA, _)
             selfA:MarkRearmComplete()
         end
 
@@ -415,6 +417,7 @@ end
 do --EVENT LISTENERS
     ---@param unit Unit
     function AirGroup:OnUnitLost(unit)
+        if unit == nil then return end
         self:CheckLiveness()
     end
 
@@ -434,7 +437,7 @@ do --EVENT LISTENERS
         end
     end
 
-    function AirGroup:OnUnitLanded(unit, airbase)
+    function AirGroup:OnUnitLanded(_, _)
         local anyInAir = false
         local group = Group.getByName(self._groupName)
         if group then