Ways to make custom LS run before vue's LS

[dyf19118]

Background:

I implemented a vite plugin that modifies the logic how modules are resolved by the resolveId hook. For example, redirect the './config/index.ts' module request to './config/index.zh-cn.ts' if the latter one exists, to get the ability to dynamically switch between files at build time. It works but the drawback is everytime when i use VSCode's "jump to definition" to go to the definition of the module, i will be redirected to the './config/index.ts' file instead of the "zh-cn" version. So i decided to implement my own custom typescript plugin to achive that goal but it conflicts with Vue's LS.

Situation:

Everytime when Vue Official Extension enabled, my ts plugin can no longer be able to intercept the module requests to project files (non node_modules files) in my proxied version of languageServiceHost.resolveModuleNameLiterals. After disabling the Vue Official Extension, everything work again, but at the cost of losing the IDE support of vue SFC files.

Efforts made to solve this problem:

After several hours of searching, i end up with this closed issue that discussed about whether to support the vue.config.js feature like what Volar does before version 2.0, and finally decided to drop the support because the problem caused by wrong TS plugin loading order have beed resolved. It seems like the problem still exists.

Reproduction:

project link: https://github.com/dyf19118/ts-plugin-region-resolver
steps to reproduction:

1. clone the ts-plugin-region-resolver codebase
2. install the dependencies
3. create a new project or use existing project, install ts-plugin-region-resolver as dependency（with file: protocol）
4. createt .region file under the project root, type whatever content you want
5. add ts-plugin-region-resolver to tsconfig.json as plugin
6. open any .ts file and ctrl + p to "restart the ts server"
7. ctrl + p to "open the ts log file"
8. view the log file to check if project modules are intercepted by the plugin (you will see the "tryPath" if it works)