Determine if template exists in emberjs

My emberjs app uses the following line in my ember-cli-build.js file

app.import('bower_components/ember/ember-template-compiler.js');

along with some code like this (coffeescript)

define("floorplan-viewer/templates/#{templateName}", ['exports'], (exports) -> exports['default'] = Ember.HTMLBars.compile(temlateText) )

to enable dynamic template creation.

Now I need to be able to determine if i.e. "floorplan-viewer/templates/custom-template-001" exists. How would I inspect the environment to see if such a template has been created ?