[1] https://marketplace.visualstudio.com/items?itemName=webfreak...
[2] https://marketplace.visualstudio.com/items?itemName=dlang-vs...
Edit: It seems that dlang-vscode recommends to instead use vscode-dls [3] or code-dlang.
[3] https://marketplace.visualstudio.com/items?itemName=LaurentT...