Failed to activate the node-resolver package

[Enter steps to reproduce:]

1. ...
2. ...

**Atom**: 1.18.0 x64
**Electron**: 1.3.15
**OS**: Ubuntu 17.04
**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 (/opt/atom/resources/app/src/package.js:253:25)
at /opt/atom/resources/app/src/package.js:225:38
at Package.module.exports.Package.measure (/opt/atom/resources/app/src/package.js:99:21)
at /opt/atom/resources/app/src/package.js:218:32
at Package.module.exports.Package.activate (/opt/atom/resources/app/src/package.js:215:40)
at PackageManager.module.exports.PackageManager.activatePackage (/opt/atom/resources/app/src/package-manager.js:645:40)
at /opt/atom/resources/app/src/package-manager.js:626:35
at Config.module.exports.Config.transactAsync (/opt/atom/resources/app/src/config.js:346:24)
at PackageManager.module.exports.PackageManager.activatePackages (/opt/atom/resources/app/src/package-manager.js:621:25)
at PackageManager.module.exports.PackageManager.activate (/opt/atom/resources/app/src/package-manager.js:603:52)
at /opt/atom/resources/app/src/atom-environment.js:846:34
```

### Commands

```
-0:17.1.0 tree-view:show (atom-workspace.workspace.scrollbars-visible-always)
```

### Non-Core Packages

```
atom-bootstrap3 1.2.12
atom-html-preview 0.1.22
atom-pair 2.0.12
atom-typescript 11.0.6
autocomplete-clang 0.11.3
browser-plus 0.0.98
build 0.68.0
build-tools 4.5.10
busy 0.7.0
busy-signal 1.4.3
emmet 2.4.3
file-icons 2.1.9
git-plus 7.9.3
intentions 1.1.5
javascript-snippets 1.2.1
language-ini 1.19.0
linter 2.2.0
linter-gcc 0.7.1
linter-ui-default 1.6.3
minimap 4.29.3
mobile-preview 0.4.0
node-debugger 1.10.1
node-resolver 1.0.1
platformio-ide 2.0.0-beta.8
platformio-ide-debugger 1.2.3
platformio-ide-terminal 2.5.4
supercollider 0.8.2
tidal-autocode 0.6.4
tidal-chord undefined
tidalcycles 0.9.2
tool-bar 1.1.0
```