What's the timing of sending textDocument/publishDiagnostics from langium to monaco editor?

[durianwaffle]

I noticed that everytime when user typed something, there will be a textDocument/publishDiagnostics message from langium to monaco editor. I am wondering are all the textDocument/publishDiagnostics message from DocumentValidator(which is for the final phase of validation)? Or there are other phases will also send textDocument/publishDiagnostics for example during lexing/parsing/linking before the customized validation checking?
What's the timing to send textDocument/publishDiagnostic for language server to Monaco editor?

[rcjsuen]

Monaco is just an editor and does not understand the Language Server Protocol. I see you have posted the same question over at eclipse-langium/langium#1819 which will be a more appropriate place than here.