hookmetamethod

local client_env = {}

local function hookmetamethod(object, metamethod, hook)
    local mt = getrawmetatable(object) or {}
    local OldMetaMethod = mt[metamethod]
    if not OldMetaMethod then
        error("metamethod not found")
    end

    setreadonly(mt, false)
    mt[metamethod] = function(...)
        return hook(OldMetaMethod, ...)
    end
    setreadonly(mt, true)

    return function()
        return OldMetaMethod
    end
end


setmetatable(client_env, {
    __index = function(tbl, key)
        if key == "test" then
            return true
        else
            return rawget(tbl, key)
        end
    end
})

print(client_env.test) -- this gotta print true :3