missing-fields ignores fields set post-assignment

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?

Diagnostics/Syntax Checking

Expected Behaviour

Assigning a table to a variable with @type annotation and filling out the class's fields and functions afterwards should not trigger missing-fields.

Actual Behaviour

A missing-fields diagnostic is triggered despite fields being set after the initial assignment of the variable yet before the variable is used for anything.

Reproduction steps

Small script that replicates the issue:

---@class MyInterface
---@field DoAction fun()

---@type MyInterface
local inst = {}

-- Does not remove `missing-fields` diagnostic
inst.DoAction = function() end

missing-fields will trigger on inst.

Additional Notes

No response

Log File

No response

从 issue 中的 Lua 复现开始，跟踪一个字段在初始化后才被赋值的类型化表的缺少字段诊断。在 Windows 上的 Visual Studio Code 扩展中确认该行为；当变量使用前，赋值后的字段不再产生缺少字段诊断时，即表示完成。