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Returns a raw metafield value from the target metatable. target may be any value, and field must be a string. The function does not call the metafield, does not invoke __index lookup, and returns nil when the metatable or field is missing.
getmetafield(target: any, field: string): any | nil
local target = {}
local meta = {
__index = function()
return "fallback"
end,
}
setrawmetatable(target, meta)
local field = getmetafield(target, "__index")
print(type(field))
print(getmetafield(target, "__newindex"))