console-error-check
A Node task. Feed it a set of webpages and it will throw an error if any of those webpages have console errors. Simple.
Installation
console-error-check has a couple of dependencies. I recommend you install these with Homebrew, the OS X package manager, but of course, there are a million ways to skin a dependency, and you can download and install these dependency binaries yourself if you prefer.
First off, update Homebrew's packages:
brew update
If you have node.js installed, you can skip this step:
brew install node
Grab a version of Phantom.js that's below 2.0.0, as Casper.js doesn't yet support it
brew install phantomjs198
Install the perpetually-beta CasperJS:
brew install casperjs --devel
This should have taken care of all your dependencies.
If you want to install console-error-check globally, run:
npm install -g console-error-check
If you want to use it in a project as a dependency, run:
npm install --save console-error