Fails to activate if package.json has no devDependencies

[Tol1]

I.E. create-react-app don't use package.json devDependencies, instead everything is on dependencies. This package fails to activate in such cases, as it's trying to fetch package names from undefined object (Object.keys(undefined))

1. Create react app with create-react-app
2. Eject
3. Try to activate

Atom: 1.23.3 x64 Electron: 1.6.15 OS: Microsoft Windows 10 Pro Thrown From: tester-jest package 1.2.0

Stack Trace

Failed to activate the tester-jest package

At Cannot convert undefined or null to object

TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at /packages/tester-jest/lib/tester-jest.js:26:24
    at Array.map (native)
    at Object.activate (/packages/tester-jest/lib/tester-jest.js:26:6)
    at Package.module.exports.Package.activateNow (~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:255:25)
    at ~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:227:38
    at Package.module.exports.Package.measure (~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:99:21)
    at ~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:220:32
    at Package.module.exports.Package.activate (~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:217:40)
    at PackageManager.activatePackage (~/AppData/Local/atom/app-1.23.3/resources/app/src/package-manager.js:695:42)
    at packagesToEnable.forEach.name (~/AppData/Local/atom/app-1.23.3/resources/app/src/package-manager.js:440:51)
    at Array.forEach (native)
    at disabledPackagesSubscription.config.onDidChange (~/AppData/Local/atom/app-1.23.3/resources/app/src/package-manager.js:440:30)
    at ~/AppData/Local/atom/app-1.23.3/resources/app/src/config.js:693:26
    at Function.module.exports.Emitter.simpleDispatch (~/AppData/Local/atom/app-1.23.3/resources/app/node_modules/event-kit/lib/emitter.js:25:20)
    at Emitter.module.exports.Emitter.emit (~/AppData/Local/atom/app-1.23.3/resources/app/node_modules/event-kit/lib/emitter.js:141:34)
    at Config.module.exports.Config.emitChangeEvent (~/AppData/Local/atom/app-1.23.3/resources/app/src/config.js:884:35)
    at Config.module.exports.Config.setRawValue (~/AppData/Local/atom/app-1.23.3/resources/app/src/config.js:670:25)
    at Config.module.exports.Config.set (~/AppData/Local/atom/app-1.23.3/resources/app/src/config.js:248:20)
    at Config.module.exports.Config.removeAtKeyPath (~/AppData/Local/atom/app-1.23.3/resources/app/src/config.js:407:18)
    at Package.module.exports.Package.enable (~/AppData/Local/atom/app-1.23.3/resources/app/src/package.js:84:32)
    at PackageManager.enablePackage (~/AppData/Local/atom/app-1.23.3/resources/app/src/package-manager.js:246:18)
    at HTMLButtonElement.enablementButtonClickHandler (~/AppData/Local/atom/app-1.23.3/resources/app/node_modules/settings-view/lib/package-card.js:361:31)

[yacut]

related to #24

[yacut]

Please try v1.2.4