debug.getproto

Returns the inner function at index inside a Luau function.

debug.getproto(func: function | level: number, index: number, activated: boolean?): function | {function}

Parameters

Parameter	Type	Description
func	function | number	The parent function, or a stack level pointing at the running closure to read protos from.
index	number	Which proto to return, 1-based.
activated	boolean?	true returns a table of the proto’s live closures instead of the proto itself. Defaults to false.

Returns

With activated left out or false, returns the single proto function sitting at index.

With activated set to true, returns a table of that proto’s closures. Index it with [1] to get an inner function you can call straight away.

Aliases

• getproto

Example

Example 1

local getproto = debug.getproto(function(...) end, 1, false)

When you want an inner function you can call, use activated true and take the first entry: debug.getproto(f, i, true)[1]. This is the reliable way to get a callable proto.