Ember : downgrading ember with bower install

问题

I've been switching to the 1.13.2 version of ember on a git branch, and now I want to come back to 1.11.1 when going back to an other branch.

I've been running npm install and bower install without failure.

But when I run ember server I run into the following error :

Missing bower packages: 
Package: ember
  * Specified: 1.11.1
  * Installed: 1.13.2

Run `bower install` to install missing dependencies.

Running bower install again does not solve the problem, neither does bower cache clean.

回答1:

Do

$ rm -rf bower_components
$ bower cache clean
$ bower install

来源：https://stackoverflow.com/questions/31167671/ember-downgrading-ember-with-bower-install