"node" COMMAND program consumes much resources in container Ubutnu 20.04

I am using the lxd container Ubuntu 20.04.
suddenly, the “node” COMMAND program in the container consumes much resources, and I hear the fan in my laptop computer sound obviously.
Below is the result of top command in the container.

PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND    
2400 tang      20   0   14.1g 796692  18952 R 101.0   5.0   0:17.54 node      

The background information is that I use VScode software to remote SSH connect to my lxd container. And I install VScode extension “Bash IDE” on the lxd container.
And on the lxd container also running the Rstudio server.

After I close the VScode client, Rstudio client, exit from ssh client, I would not hear the big sound of the fan in my laptop computer.

So what is the “node” COMMAND program ? Why does it consume so much? What should I do?