fix: vue-tsc does not show ts errors in the terminal with --incremental

[wangshunnn]

• I'm trying to fix the issue I raised:
  TypeScript errors are not displayed in terminal with --incremental (vue-tsc@2) vuejs/language-tools#4194

• In the process of locating the problem, I found that when tsc --incremental is run repeatedly, the TS error message is converted by tsc.js's convertToDiagnosticRelatedInformation method, which does not correctly get the text content corresponding to the error. So, I'm going to proxy this function to get diagnostic.file.text correctly.

• I don't think my solution is very elegant, and I'm worried about introducing new issues, but at least I hope to provide some clues. Since I'm not familiar with volar at the moment, I'm expecting a simpler fix as well.

[johnsoncodehk]

Thanks for the investigation, I tried proxy getSourceFileByPath to re-fix it, please let me know if you find any problems or not.

[wangshunnn]

Thanks for the investigation, I tried proxy getSourceFileByPath to re-fix it, please let me know if you find any problems or not.

Oh, this is a really great fix that is more compatible with the current decorateProgram logic!

I just tested the fix and it's working fine and I haven't found any problems yet!

I once tried to proxy program.getSourceFileByPath like you did, but I didn't handle it properly in the end, so I took a "detour" haha. Thank you very much!

[johnsoncodehk]

Thanks for confirming!