-*- mode: outline; coding: utf-8; fill-column: 90 -*-

* Setting up environment.

In 'about:config' set this variable:

  javascript.options.showInConsole = true

                Logs errors in chrome files to the Error Console.

  javascript.options.strict = true

                Enables strict JavaScript warnings in the Error Console.

  extensions.logging.enabled = true

                This will send more detailed information about installation and update

                problems to the Error Console.

  https://developer.mozilla.org/en/Setting_up_extension_development_environment

                setting up profile, options and about developer plugin

* Useful developer plugin.

** Firebug.

Firebug integrates with Firefox to put a wealth of development tools at your fingertips

while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any

web page.

  http://getfirebug.com

                home page

  https://addons.mozilla.org/firefox/addon/1843

                download page

** Live HTTP Headers.

 * First by adding a 'Headers' tab in 'View Page Info' of a web page.

 * Second by adding a tool in the 'Tools->Web Development' menu to be able to display http

   headers in real time (while pages are being downloaded from the Internet.

 * Third by letting you edit request headers and replay an URL (beta). Look for the Replay

   button in the live window!

This project may be of some help for the following:

  http://livehttpheaders.mozdev.org/

                home page

  https://addons.mozilla.org/en-US/firefox/addon/3829/

                download page

* How build Firefox.

  https://developer.mozilla.org/en/Build_Documentation

                Build Instructions

  https://developer.mozilla.org/en/Mozilla_Source_Code_%28Mercurial%29

                Getting Mozilla Source Code Using Mercurial

* Extension security.

  https://developer.mozilla.org/en/Security_best_practices_in_extensions