local config = {}

config.format = function(t)
    assert(type(t) == "table", "Table expected got: " .. type(t))

    local knownTables = knownTables or {}
    local serialized = ""
	local depth = depth or 1
	local whitespace = string.rep(" ", depth * 4)

    for k, v in pairs(t) do
        local varType = type(v)
		local value = ""
        if varType == "string" then
            value = string.format("%q", v)
        elseif varType == "number" or varType == "boolean" then
            value = tostring(v)
        elseif varType == "table" then
            local t = v
            for k, v in pairs(knownTables) do
                if v == t then
                    error("Recursive table")
                end
            end
            table.insert(knownTables, v)
            value = serialize(v, knownTables, depth + 1)
        end
        if value then
            local prefix = serialized == "" and "" or ", "
			key = (type(k) == "number" and ("[" .. k .. "]") or k) .. " = "
            serialized = serialized .. prefix .. "\n" .. whitespace .. key .. value
        end
    end
    return  "{" .. serialized .. "\n" .. string.rep(" ", (depth - 1) * 4)  .. "}"
end

return config