Injector error can be misleading during module instantiation

[robstove]

During module loading there is an opportunity for failure in the runInvokeQueue() function. This can occur when the expected function on the provider does not exist. To provide additional details to the developer I propose checking for undefined value before executing the provider function. This will provide additional details about why the module failed to load.

src\auto\injector.js (starting at line 736)

  function runInvokeQueue(queue) {
    var i, ii;
    for (i = 0, ii = queue.length; i < ii; i++) {
      var invokeArgs = queue[i],
          provider = providerInjector.get(invokeArgs[0]);

      // Undefined provider method check.
      var providerFn = provider[invokeArgs[1]];
      if (providerFn === undefined) {
        throw new Error("Method " + invokeArgs[1] + " was not found for provider " + invokeArgs[0] + ".");
      }

      providerFn.apply(provider, invokeArgs[2]);
    }
  }

[Narretz]

Sounds like a good addition. Would you like to open a PR?

[robstove]

done