Failed to activate the node-resolver package

Steps to reproduce:

1. Install node-resolver

**Atom**: 1.23.2 x64
**Electron**: 1.6.15
**OS**: Mac OS X 10.13.2
**Thrown From**: [node-resolver](git://github.com/hughsk/atom-node-resolver) package 1.0.1

### Stack Trace

Failed to activate the node-resolver package

```
At Cannot read property 'command' of undefined

TypeError: Cannot read property 'command' of undefined
at Object.exports.activate (/packages/node-resolver/index.js:12:21)
at Package.module.exports.Package.activateNow (/Applications/Atom.app/Contents/Resources/app/src/package.js:255:25)
at /Applications/Atom.app/Contents/Resources/app/src/package.js:227:38
at Package.module.exports.Package.measure (/Applications/Atom.app/Contents/Resources/app/src/package.js:99:21)
at /Applications/Atom.app/Contents/Resources/app/src/package.js:220:32
at Package.module.exports.Package.activate (/Applications/Atom.app/Contents/Resources/app/src/package.js:217:40)
at PackageManager.activatePackage (/Applications/Atom.app/Contents/Resources/app/src/package-manager.js:695:42)
at config.transactAsync (/Applications/Atom.app/Contents/Resources/app/src/package-manager.js:670:36)
at Config.module.exports.Config.transactAsync (/Applications/Atom.app/Contents/Resources/app/src/config.js:367:24)
at PackageManager.activatePackages (/Applications/Atom.app/Contents/Resources/app/src/package-manager.js:668:23)
at PackageManager.activate (/Applications/Atom.app/Contents/Resources/app/src/package-manager.js:647:50)
at /Applications/Atom.app/Contents/Resources/app/src/atom-environment.js:865:36
```

### Commands

```
```

### Non-Core Packages

```
atom-ide-ui 0.7.1
atom-quokka 1.0.39
autocomplete-module-import 0.2.0
cursor-history 0.12.0
git-plus 7.10.0
hey-pane 1.1.0
ide-typescript 0.7.2
node-debugger 1.10.1
node-resolver 1.0.1
opened-files 0.3.6
recent-files-fuzzy-finder 0.4.0
refactor 0.11.5
zentabs 0.8.9
```