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Hacks Blog

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• Eliminating Data Races in Firefox – A Technical Report

  We successfully deployed ThreadSanitizer in the Firefox project to eliminate data races in our remaining C/C++ components. In the process, we found several impactful bugs and can safely say that data races are often underestimated in terms of their impact on program correctness. We recommend that all multithreaded C/C++ projects adopt the ThreadSanitizer tool to enhance code quality.The post Eliminating Data Races in Firefox – A Technical Report appeared first on Mozilla Hacks - the Web developer blog.

  Posted Tuesday, April 6, 2021 by Christian Holler

• A web testing deep dive: The MDN web testing report

  For the last couple of years, we've run the MDN Web Developer Needs Assessment (DNA) Report, which aims to highlight the key issues faced by developers building web sites and applications. This has proved to be an invaluable source of data for browser vendors and other organizations to prioritize improvements to the web platform. This year we did a deep dive into web testing, and we are delighted to be able to announce the publication of this follow-on work, available at our insights.developer.mozilla.org site along with our other Web DNA publications.The post A web testing deep dive: The MDN web testing report appeared first on Mozilla Hacks - the Web developer blog.

  Posted Thursday, April 1, 2021 by Chris Mills

• MDN localization in March — Tier 1 locales unfrozen, and future plans

  Since we last talked about MDN localization, a lot of progress has been made. In this post we'll talk you through the unfreezing of Tier 1 locales, and the next steps in our plans to stop displaying non-active and unmaintained locales.The post MDN localization in March — Tier 1 locales unfrozen, and future plans appeared first on Mozilla Hacks - the Web developer blog.

  Posted Thursday, March 25, 2021 by Chris Mills

• In March, we see Firefox 87

  Nearing the end of March now, and we have a new version of Firefox ready to deliver some interesting new features to your door. This month, we've got some rather nice DevTools additions in the form of prefers-color-scheme media query emulation and toggling :target pseudo-classes, some very useful additions to editable DOM elements: the beforeinput event and getTargetRanges() method, and some nice security, privacy, and macOS screenreader support updates.The post In March, we see Firefox 87 appeared first on Mozilla Hacks - the Web developer blog.

  Posted Tuesday, March 23, 2021 by Chris Mills

• How MDN’s site-search works

  Periodically, the whole of MDN is built, by our Node code , in a GitHub Action. A Python script bulk-publishes this to Elasticsearch. Our Django server queries the same Elasticsearch via /api/v1/search. The site-search page is a static single-page app that sends XHR requests to the /api/v1/search endpoint. Search results' sort-order is determined by match and "popularity".The post How MDN’s site-search works appeared first on Mozilla Hacks - the Web developer blog.

  Posted Monday, March 22, 2021 by Peter Bengtsson