Firefox add-on index.js with nasty hack to load a page-mod script from the add-on's root folder rather than from under its /data folder (for http://stackoverflow.com/questions/22656494/contentscriptfile-dont-work-in-pagemod)

index.js

var self = require('sdk/self');
var pageMod = require("sdk/page-mod");

// Nasty hack based on source code from sdk/self.js
const options = require('@loader/options');
const { get } = require("sdk/preferences/service");
const { readURISync } = require('sdk/net/url');
const id = options.id;
const readPref = key => get("extensions." + id + ".sdk." + key);
const name = readPref("name") || options.name;
const baseURI = readPref("baseURI") || options.prefixURI + name + "/"
const uri = (path="") =>
  path.includes(":") ? path : baseURI + path.replace(/^\.\//, "");
var hack = Object.freeze({
  url: uri,
  load: function read(path) {
    return readURISync(uri(path));
  }
});
// End of nasty hack

pageMod.PageMod({
  include: "*.org",
  // instead of self.data() we use hack()
  contentScriptFile: myData.url("myFile.html")
});