Opening a specific url when a Firefox addon has been installed

Question

I am using the Firefox SDK to create an add-on. I would like a specific webpage to be open once that add-on is successfully installed. I created a module to attempt to do so:

var tabs = require("sdk/tabs");

exports.main = function (options, callbacks) {
    if (options.loadReason === 'install') {
        tabs.open("https://www.google.com");
    }
};

exports.onUnload = function (reason) {
  if (reason === 'uninstall') {
      tabs.open("https://www.google.com");
  }
};

I then require this script in my main.js file (handlers.js is the name of the above script):

require("handlers.js");

However, this script does not execute -- whether during installation or uninstallation. I have tried the following links for help, but I don't seem to be able to solve my issue:

https://developer.mozilla.org/en-US/Add-ons/SDK/Tutorials/Listening_for_load_and_unload

Opening a page after Firefox extension install

Answer 1

The solution for this was repackaging the add-on with the package.json and it worked except for the onUnload function which has a bug and uninstall is never called as a reason and as such I had to use "disable" as the reason to check for and it worked!.

For more on the bug refer to: https://developer.mozilla.org/en-US/Add-ons/SDK/Tutorials/Listening_for_load_and_unload