AngularJS application deployment to Heroku, unable to find suitable angular-animate version - angularjs

Question

I am deploying an AngularJS application to Heroku but am getting this error in the console:
remote: bower ECONFLICT Unable to find suitable version for angular-animate
remote:
remote: ! Push rejected, failed to compile Node.js app
remote:
remote: Verifying deploy....
remote:
remote: ! Push rejected to test-app-12345
The problem (of course) seems to be with the angular-animate dependency.
I am using a Heroku angularJS buildpack "Yo Angular" and have followed their 4 step process for a successful application deployment to Heroku.
I tried fixing this by changing my bower.json file like recommended in this StackOverflow answer, hoping it would solve my issue. It did not.
Locally, I use grunt serve to start the application and that works for me just fine.
My bower.json looks like this:
{
"name": "dashboard",
"version": "0.0.0",
"main": "index.html",
"ignore": [
"**/.*",
"node_modules",
"bower_components"
],
"dependencies": {
"jquery": "~2.0",
"bootstrap": "~3.1.1",
"angular": "~1.3.15",
"angular-ui-router": "~0.2",
"angular-animate": "~1.3.15",
"angular-resource": "~1.3.15",
"angular-cookies": "~1.3.15",
"angular-mocks": "~1.3.15",
"angular-ui-utils": "~0.1",
"angular-bootstrap": "~0.11.2",
"moment": "~2.5",
"less.js": "~1.6",
"font-awesome": "~4.2.0",
"form-builder": "0.1.0",
"restangular": "~1.4.0",
"lodash": "~2.4.1",
"satellizer": "~0.3.2",
"angular-xeditable": "~0.1.8",
"fullcalendar": "~2.1.1",
"angular-ui-calendar": "~0.8.1",
"checklist-model": "~0.1.3"
},
"resolutions": {
"font-awesome": "~4.2.0",
"jquery": "~2.0",
"fullcalendar": "~2.1.1",
"angular": "~1.3.15",
"angular-bootstrap": "~0.11.2"
}
}
The code is public for now, so here is the link to the Github repo.
Anyone have tips for me, or a good idea of what I am doing wrong?
P.S. I found this information in bower's Github issues tracking, which is dealing with the same problem. Might be helpful in figuring this out.

Answer 1

This error occurs when two packages reference different versions of the same dependency.
You can resolve the issue by running rm -rf bower_components/ ; bower install
Then when prompted to choose a version prefix your answer with a "!" like I have below. Notice how bower will add a "resolutions" section.
Unable to find a suitable version for angular-animate, please choose one:
1) angular-animate#~1.2 which resolved to 1.2.28 and is required by form-builder#0.1.0
2) angular-animate#~1.3.15 which resolved to 1.3.17 and is required by dashboard
3) angular-animate#~1.4.3 which resolved to 1.4.3
Prefix the choice with ! to persist it to bower.json
? Answer: !3
Here is your resolved bower.json file.
{
"name": "dashboard",
"version": "0.0.0",
"main": "index.html",
"ignore": [
"**/.*",
"node_modules",
"bower_components"
],
"dependencies": {
"jquery": "~2.0",
"bootstrap": "~3.1.1",
"angular": "~1.3.15",
"angular-ui-router": "~0.2",
"angular-animate": "~1.4.3",
"angular-resource": "~1.3.15",
"angular-cookies": "~1.3.15",
"angular-mocks": "~1.3.15",
"angular-ui-utils": "~0.1",
"angular-bootstrap": "~0.11.2",
"moment": "~2.5",
"less.js": "~1.6",
"font-awesome": "~4.2.0",
"form-builder": "0.1.0",
"restangular": "~1.4.0",
"lodash": "~2.4.1",
"satellizer": "~0.3.2",
"angular-xeditable": "~0.1.8",
"fullcalendar": "~2.1.1",
"angular-ui-calendar": "~0.8.1",
"checklist-model": "~0.1.3"
},
"resolutions": {
"font-awesome": "~4.2.0",
"jquery": "~2.0",
"fullcalendar": "~2.1.1",
"angular": "~1.3.15",
"angular-bootstrap": "~0.11.2",
"angular-animate": "~1.4.3"
}
}