Issues with watch-client

[0] /Users/bortignon/dev/TracklistMeReact-OverBoilerPlate/webpack/dev.config.js:24
[0] var babelLoaderQuery = Object.assign({}, babelrcObject, babelrcObjectDevelopme
[0] ^
[0] TypeError: undefined is not a function
[0] at Object. (/Users/bortignon/dev/TracklistMeReact-OverBoilerPlate/webpack/dev.config.js:24:31)
[0] at Module._compile (module.js:460:26)
[0] at Object.Module._extensions..js (module.js:478:10)
[0] at Module.load (module.js:355:32)
[0] at Function.Module._load (module.js:310:12)
[0] at Module.require (module.js:365:17)
[0] at require (module.js:384:17)
[0] at Object. (/Users/bortignon/dev/TracklistMeReact-OverBoilerPlate/webpack/webpack-dev-server.js:5:21)
[0] at Module._compile (module.js:460:26)
[0] at Object.Module._extensions..js (module.js:478:10)
[0] npm run watch-client exited with code 0
--> Sending SIGTERM to other processes..

Possible hint:
I recently downgrade from node 0.4.21 to 0.12.7