debug.setmetatable Synchronous

Set an object’s raw metatable through the debug namespace. It follows the same behavior as setrawmetatable and returns the object you supplied.

Syntax

Luau

debug.setmetatable(
    value: Table | userdata | string,
    metatable: Table?
) -> Table | userdata | string

Parameters

Function parameters
Parameter	Type	Description
`value`	`Table \| userdata \| string`	Table, userdata, or string to update.
`metatable`	`Table?`	New metatable table, or nil to remove it.

Table | userdata | string

The original value.

A Roblox Instance is returned unchanged.

Luau

local object = {}
debug.setmetatable(object, { __index = function() return "missing" end })
print(object.unset) -- missing