CodeMirror LSP
https://discuss.codemirror.net/t/codemirror-6-and-typescript-lsp/3398/8
https://www.npmjs.com/package/@typescript/vfs
https://github.com/okikio/codemirror/blob/main/src/components/Editor.tsx
https://hjr265.me/blog/codemirror-lsp/
需要调研