Error when doing require('node-read')

I'm getting:

```
Uncaught TypeError: Cannot convert undefined or null to object
```

Seems to happen here:

```
function getInverseObj(obj){
return Object.keys(obj).sort().reduce(function(inverse, name){
inverse[obj[name]] = "&" + name + ";";
return inverse;
}, {});
}
```

Without the require my project runs without an issue...
Am I missing some dependency or anything?