Reassigning nullable in if block

[SalavatR]

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

Windows

What is the issue affecting?

Type Checking

Expected Behaviour

After cheking for null in IF block, variable should return not null.

Actual Behaviour

After cheking for null in IF block, variable returns nullable value, so it causes warning

solution: check in two if blocks or use --[[@as not_nullable_type]]

Reproduction steps

---@Class Mclass
local var1= {
---@type number?
var2 = nil,
}

---@param number
local function fun1(var2) end

---

if var1 and var1.var2 then
local var2= var1.var2
fun1(var2) --Cannot assign number? to parameter number.
end

Additional Notes

No response

Log File

No response