HomeLog InSource


[View] [Short] [Hash] [Raw]


The Firefox case study

There’s been some consternation over the present and future of Firefox.

I feel like there hasn’t been enough critical analysis of what went wrong, what Mozilla should’ve done instead, and what they should do now to fix it. This should be a case study taught as part of every software engineering curriculum in the land.

First let me say I don’t work an Mozilla, and none of my friends work at Mozilla. On one hand that might make me an uninformed outsider; on the other, it gives me some distance to analyze the situation more objectively.

Also I can’t gloss over the Brendan Eich fiasco. I’ll just say that the situation was more complex than most thought at the time. I think it would’ve been more productive to put aside his personal politics for the sake of the open web and the Mozilla Foundation’s goals. Nobody’s perfect, eating your own, chilling effects, etc.

But it might not’ve made that much difference, because his spinoff browser Brave isn’t that amazing either. Frankly if he had forked Firefox it might’ve been a second-coming-of-Steve-Jobs-type scenario, but by using Electron he basically admitted he was out of shit.

Which, I think, approaches the heart of the matter. Rewriting Netscape killed the company once, and rewriting Firefox is threatening to kill it again. No matter how great Servo will be in five years, Firefox is stagnating today. Project Quantum is good lip service but doesn’t make up for the lack of work on Firefox directly.

Even if Servo is not officially a Firefox replacement, it’s drawing from the same pool. All of the low level, “systems” programmers who might work on fixing Firefox are obviously not going to bother, since everyone has written it off at this point. Instead they’ll either contribute to Servo or work on something else entirely. Unfortunately even with everyone excited to work on Servo, creating a new browser from scratch these days is a bottomless money pit.

This social problem is made worse by what I see as Mozilla having too many web developers. Web developers are ironically useless for developing a web browser, because they can’t think outside the (browser) box. Mozilla’s many GUI experiments and makeovers are symptomatic of this problem. Firefox is a building with structural problems and they hired a lot of interior designers to give it a fresh coat of paint.

While Firefox may already be past the tipping point in terms of developer mindshare, I don’t think it’s too late to fix it from a technical perspective. That said, it’s critical to refactor, not rewrite, and the major stumbling block in that direction is backwards compatibility.

In order for Firefox’s code to not be awful, they have to get rid of XUL. That means dropping support for the historical extension API, which is namely all of XUL. That provokes outrage amongst the current userbase. Strangely, no one minds that the long-awaited Servo won’t support XUL or current Firefox extensions either.

I think the only reasonable way out of this situation is an official fork of Firefox. Preserve the Firefox we know and (almost) love today, while working on a new version that is unconstrained by all of the current bullshit. Sort of like Servo-lite, except that removing bad stuff is a lot easier than creating good stuff from scratch.

I would set a ground rule: no UI changes during this fork. It’s not a playground for happy fun experiments. And yes, I would make it support Chrome extensions out of the box, because they have a relatively sane API, despite its limitations.

I would keep writing it in C++, with much greater security provided by a separate sandboxing layer[#]. But for the sake of argument lets say it has to move to Rust for political reasons. In that case I’d use automatic translation, starting with one module at a time. In my understanding, Corrode can only translate from C to Rust, and there are ABI stability issues when closely integrating between Rust and C++. Those problems would need to be addressed.

Then, once the fork was good enough to be adopted by most techies, and then a safe while longer, I’d rebrand it back to Firefox and push it out through auto-update to existing users who didn’t opt-out.

I’d also go crawling back to Google for the default search engine. Switching to Yahoo was an awful idea even at the time, driven by fear and ideology rather than any sense of strategy.