Get object of all templates (by name) in Meteor

I have a command line function which is pretty straight forward to add a Mandrill template.

var fs = Npm.require('fs');

this.addMandrillTemplate = function(templateName, options) {
  var requestUrl = "https://mandrillapp.com/api/1.0/templates/add.json";

  /** here is the problem. How do I look up the template? */
  var templatePath = "";

  Meteor.http.post(requestUrl, {
    "key": process.env.MANDRILL_KEY,
    "name": "Example Template",
    "from_email": "from_email@example.com",
    "from_name": "Example Name",
    "subject": "example subject",
    "code": fs.readFileSync(templatePath),
    "text": "Example text content",
    "publish": false,
    "labels": [
        "example-label"
    ]
  }, function(err, data) {
  });
}

So the idea is I will read a file path based on the name of a template name, open it, read it, then pass the value of its HTML to the "code" key.

So I imagine there must be SOME mechanism in the background looking up these templates paths and injecting them in order for Meteor to do what it does. I am hoping to get something like this, when all is said and done:

{
  "invitationEmail": "/Users/me/code/my_project/client/templates/invitation_email.html"
}