Resolved: Why CompletionItemProvider not work when enter charactor?

Question:

I have uploaded my code at https://github.com/Hfutsora/monaco-kaco.
Steps to reproduce:

1. Open github page https://hfutsora.github.io/monaco-kaco/
2. Enter char ‘O’ at the endline then you can get suggestion
   
3. Enter char ‘O’ before the endline there are no suggestions appeared
   

Answer:

I think the problem is that VS Code filters out your candidates because it gets the wrong already typed characters. In my completion providers I use a different method:

const info = model.getWordUntilPosition(position);

which finds the word before the current caret position.

If you have better answer, please add a comment about this, thank you!