Npm?

`npm` is written in mainly JavaScript, while I found that on `bin/npm`:
```
NODE_EXE="$basedir/node.exe"
if ! [ -x "$NODE_EXE" ]; then
NODE_EXE="$basedir/node"
fi
if ! [ -x "$NODE_EXE" ]; then
NODE_EXE=node
fi
```
It's truly supposed that `node` is installed. If we let it to choose `jsc` instead?

I'm not sure if `node` apis are provided by `jsc`, for me now it's more likely to a browser on the background than a back-end environment. If there is no problem with apis `node` projects would be easy to port.