There are two ways to do it. If you have a solution, and you'd like to open your vue project folder together with this solution, do the following:
If you'd like to open only your vue project folder without any solution, use Open button on the Welcome screen, or File -> Open -> Open... action from the main menu. In the popup dialog select your folder and click Open.
There are two ways to do it. If you have a solution, and you'd like to open your vue project folder together with this solution, do the following:
If you'd like to open only your vue project folder without any solution, use Open button on the Welcome screen, or File -> Open -> Open... action from the main menu. In the popup dialog select your folder and click Open.

Hope this helps!
Ok, got it, thanks! Does rider support the node.js project template (njsproj)?
Tabaloa
Rider can open and run such projects. However, you need to manually create a run configuration for it via Run | Edit Configurations.
Please let me know if anything won't work as you expect.