debug.getupvalue - Potassium

function debug.getupvalue(function: function | number, index: number): any

function | number

required

The function whose upvalue is returned.

number

required

The index of the upvalue to return.

Alias: getupvalue

This code sample will print an upvalue from the function’s upvalue list.

local bar = "Hello, World!"
function foo()
    print(bar)
end

local upvalue = debug.getupvalue(foo, 1)
print(upvalue)