Is it possible to implement support for this type of overload?

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

Actual Behaviour

Reproduction steps

---@class Position
---@field x number
---@field y number
---@field z number
Position = {};

---@param x number
---@param y number
---@return number
---@overload fun(self:Position, pos: Position): number
function Position:GetExactDist2dSq(x, y)
    if type(x) == "table" then
        return self:GetExactDist2dSq(x.x, x.y);
    end
    local dx = x - self.x;
    local dy = y - self.y;
    return dx*dx + dy*dy;
end

Additional Notes

No response

Log File

No response

从 issue 中的 Lua 复现开始，比较截图中所示的预期类型检查行为与实际类型检查行为。跟踪 language server 对 GetExactDist2dSq 的重载处理；当带数字参数的形式和带 Position 参数的重载都能正确通过类型检查时，即表示完成。