My preferred way of dealing with permissions in StarfallEx.

permdemo.lua

--@client
local function init()
    -- Your code here (placeholder code follows)
    hook.add("render", "render", function()
        local w, h = render.getResolution()
        render.setFont("DermaLarge")
        render.drawSimpleText(w/2, h/2, "Success!", 1, 1)
    end)
    -- Your code here (placeholder code precedes)
end
local perms = {
    "console.command" -- example perm
}
local function preinit()
    local allowed = true
    for _, perm in pairs(perms) do
        if not hasPermission(perm) then
            allowed = false
            break
        end
    end
    if allowed then
        hook.remove("permissionrequest", "preinit")
        hook.remove("render", "preinit")
        init()
    else
        hook.add("permissionrequest", "preinit", preinit)
        hook.add("render", "preinit", function()
            local w, h = render.getResolution()
            render.setFont("DermaLarge")
            render.drawSimpleText(w/2, h/2, "Press E on screen", 1, 1)
        end)
        setupPermissionRequest(perms, "Reason here", true)
    end
end
preinit()