Simple module loader

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Status

Simple module loader
Stage	Complete
Status	Complete
Release target	SDK 1.4
Health	OK
Status note	`

Team

Product manager	David Mason
Directly Responsible Individual	Irakli Gozalishvili
Lead engineer	Irakli Gozalishvili
Security lead	`
Privacy lead	`
Localization lead	`
Accessibility lead	`
QA lead	`
UX lead	`
Product marketing lead	`
Operations lead	`
Additional members	`

Open issues/risks

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Stage 1: Definition

1. Feature overview

Addon SDK's module loader was implemented at the early stage of the project and intentionally was designed with lots of flexibility in mind. This flexibility comes with a price of complexity, unjustified for at this stage of the project.

This feature is to simplify the SDK's module loader and bootstrap code and relay on platform capabilities were possible.

2. Users & use cases

The target audience is addon developers. The use case is an add-on developer using the Add-on SDK (either directly or via the Add-on Builder) to build an addon.

3. Dependencies

4. Requirements

Combine bootstrap.js, components/harness.js, cuddlefish.js and securable-module.js into single form module loader that has no external dependencies.
Let platform handle all IO operations associated to the module loading.
Make module loader agnostic of addon form (whether.xpi is unpacked or not).

Non-goals

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Stage 2: Design

5. Functional specification

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6. User experience design

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Stage 3: Planning

7. Implementation plan

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8. Reviews

Security review

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Privacy review

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Localization review

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Accessibility

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Quality Assurance review

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Operations review

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Stage 4: Development

9. Implementation

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Stage 5: Release

10. Landing criteria

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Feature details

Priority	Unprioritized
Rank	999
Theme / Goal	`
Roadmap	Jetpack
Secondary roadmap	`
Feature list	Jetpack
Project	`
Engineering team	Jetpack

Team status notes

	status	notes
Products	`	`
Engineering	`	`
Security	sec-review-unnecessary	`
Privacy	`	`
Localization	`	`
Accessibility	`	`
Quality assurance	`	`
User experience	`	`
Product marketing	`	`
Operations	`	`

This change is crucial and indirectly related to other features:

Out-of-Process Addons https://wiki.mozilla.org/Features/Jetpack/Out-of-Process_Addons
SDK Support for Firefox for Mobile Addons https://wiki.mozilla.org/Features/Jetpack/SDK_Support_for_Firefox_for_Mobile_Addons

Two options were considered in implementing this:

Use of .jsm modules wrapped into CommonJS form https://bugzilla.mozilla.org/attachment.cgi?id=548736
Use of sandboxes https://bugzilla.mozilla.org/attachment.cgi?id=548878

Few disadvantages have been highlighted with an option #1: https://wiki.mozilla.org/User:Asqueella/Sandboxes