ESODecoded

FindFirstEmptySlotInBag

ESO Lua API function — used by 53 of the 3,030 addons we indexed (combined 26,360,702 downloads). Signature from the official ESOUIDocumentation.txt, API version 101050.

Official signature

FindFirstEmptySlotInBag([Bag|#Bag] bagId)

Returns: integer:nilable slotIndex

Real usage — from Dolgubon's Lazy Writ Crafter

	emptySlots = {}
	for i = FindFirstEmptySlotInBag(location) or 250, GetBagSize(location) - 1 do
		if GetItemName(location, i) == "" then

Short excerpt from the shipping addon Dolgubon's Lazy Writ Crafterits ESOUI page; the code belongs to its author. Shown because documentation without a working example is half a reference.

Most-downloaded addons using it

AddonTotal downloads
Dolgubon's Lazy Writ Crafter9,498,314
LibLazyCrafting6,538,592
AwesomeGuildStore4,722,462
LibMarify1,376,993
AlphaGear 2 (Builds, Gear, Skills, Banking)848,683
Roomba - Guildbank Stacker675,040