How do I get global variables within nodejs

I have this code below. but when I start into the nesh prompt, i cannot access the global variable myvar

Is there a context to access it from? i looked at global but was not there either

Also how do I exit nesh to continue running my application event loop.

```
//var keypress = require('keypress');
var nesh=require("nesh");
var myvar=123;
opts = {
welcome: 'Welcome!',
prompt: 'test> '
};

nesh.start(opts, function (err) {
if (err) {
nesh.log.error(err);
}
});

```

The issue names no source file or test; begin by reproducing the provided Node.js snippet in the nesh prompt and tracing how nesh exposes context and exits. Done means the prompt can access myvar and the application event loop can resume after leaving nesh.

Written by the indexing model from the issue text.