Doc export format requirements break auto-completion, and vice-versa

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

MacOS

What is the issue affecting?

Annotations, Completion, Hover, Other

Expected Behaviour

The format LLS expects to export documentation and handle autocompletion & hover should be the same. I'd like to export documentation from the same set of definition files I'm shipping as an Addon, and keeping them synced to the same source of truth seems the sensible way to go.

Actual Behaviour

This example is valid as far as documentation export, in that the JSON file generated as output contains references to the functions defined. However, this breaks tooltips/popovers/autocompletion, which require testLib to be defined and returned from this module to function:

---@meta cradle.basic.text

---This is test function 1.
---@param a number This is a number.
---@param b number This is another number.
---@return number This is the sum of a and b.
function testLib.add(a, b) end

---This is test function 2.
---@param a number This is a number.
---@param b number This is another number.
---@return number This is the difference of a and b.
function testLib.sub(a, b) end

Conversely, this other example allows tooltips/popovers/autocompletion to function properly, documentation generated via CLI seems to succeed with no errors, however the actual JSON containing the references is missing any reference to testLib entirely:

---@meta cradle.basic.text

local testLib = {}

---This is test function 1.
---@param a number This is a number.
---@param b number This is another number.
---@return number This is the sum of a and b.
function testLib.add(a, b) end

---This is test function 2.
---@param a number This is a number.
---@param b number This is another number.
---@return number This is the difference of a and b.
function testLib.sub(a, b) end

return testLib

Reproduction steps

1. Save each of the two examples above as a Lua file somewhere
2. Modify LLS config to include them
3. Export documentation via CLI and try to require the library in the workspace
4. Observe that depending on the example tested, either documentation exporting silently fails, or popovers don't work anymore

Additional Notes

No response

Log File

No response

首先使用 issue 中的两个 Lua 示例重现该行为：通过 CLI 导出文档，然后在 workspace 中 require 每个库，并比较补全、悬停和生成的 JSON 引用。追踪模块级定义和返回表的不同处理方式；完成的标准是，同一种源格式同时支持文档导出和编辑器功能，且不会静默丢失 testLib。