View difference between Paste ID: 9zxEjmb2 and Q9ddW5ms

 _G["basic"] = {}
 
 function basic.drawPixel(x,y,spec)
   if not math.floor(x) then
     error("Got "..type(x)..". Number is expected")
   elseif not math.floor(y) then
-    error("Got"..typer(y)..". Number is expected")
+    error("Got"..type(y)..". Number is expected")
   end
   local x = math.floor(x)
   local y = math.floor(y)
   if not spec then
     term.setCursorPos(x,y)
     write("#")
     return true
   elseif spec == true then
     paintutils.drawPixel(x,y,colors.white)
     return true
   end
   return false
 end
 function basic.drawLine(x1,y1,x2,y2,spec)
   if spec then
     paintutils.drawLine(x1,y1,x2,y2,colors.white)
     return true
   end
   local x1 = math.floor(x1)
   local x2 = math.floor(x2)
   local y1 = math.floor(y1)
   local y2 = math.floor(y2)
   local minX = math.min(x1,x2)
   local maxX = math.max(x1,x2)
   local minY = math.min(y1,y2)
   local maxY = math.max(y1,y2)
   local difX = maxX - minX
   local difY = maxY - minY
   if x1 == x2 then
     if y1 == y2 then
       basic.drawPixel(x1,y1)
     else
       for ypos = minY,maxY do
         basic.drawPixel(x1,ypos)
       end
     end
     return true
   end
   for xpos = minX,maxX do
     local ypos = minY + difY * (xpos - minX) / difX
     basic.drawPixel(xpos,ypos)
   end
   return true
 end
 
 function basic.drawBox(x1,y1,x2,y2,spec)
   if spec then
     paintutils.drawBox(x1,y1,x2,y2,colors.white)
     return true
   end
   basic.drawLine(x1,y1,x2,y1)
   basic.drawLine(x1,y1,x1,y2)
   basic.drawLine(x2,y2,x1,y2)
   basic.drawLine(x2,y2,x2,y1)
   return true
 end
 
 function basic.drawFilledBox(x1,y1,x2,y2,spec)
   if spec then
     paintutils.drawFilledBox(x1,y1,x2,y1,colors.white)
     return true
   end
   local maxY = math.max(y1,y2)
   local minY = math.min(y1,y2)
   for i =minY,maxY do
     basic.drawLine(x1,i,x2,i)
   end
   return true
 end