Upgrade to Pro — share decks privately, control downloads, hide ads and more …
Sign up for free

Outdated browser detection with Browserslist

Avatar for Salahutdinov Dmitry Salahutdinov Dmitry
March 23, 2019
Programming
350
1

Outdated browser detection with Browserslist

Check the outdated browser in the same way on both: front-end and back-end

Avatar for Salahutdinov Dmitry

Salahutdinov Dmitry

March 23, 2019

More Decks by Salahutdinov Dmitry

See All by Salahutdinov Dmitry
Fullstack monitoring
Avatar for Salahutdinov Dmitry dsalahutdinov
0
250
Product metrics for developers
Avatar for Salahutdinov Dmitry dsalahutdinov
0
76
Kubernetes-native Ruby development
Avatar for Salahutdinov Dmitry dsalahutdinov
0
500
Business Impact Driven Development
Avatar for Salahutdinov Dmitry dsalahutdinov
0
390
Optimistic UI with Logux & Ruby (RubyRussia)
Avatar for Salahutdinov Dmitry dsalahutdinov
0
400
bidd.pdf
Avatar for Salahutdinov Dmitry dsalahutdinov
0
320
Optimistic UI with Logux & Ruby
Avatar for Salahutdinov Dmitry dsalahutdinov
0
280
Optimistic UI and live updates with Logux & Ruby
Avatar for Salahutdinov Dmitry dsalahutdinov
1
2k

Other Decks in Programming

See All in Programming
AI に Inclusive UI を書かせよう — Design Rules Skill で Compose UI を作り直す
Avatar for テオリア・テクノロジーズ theoriatec2024
1
490
数年滞っていたダークモード対応をおよそ2週間で完了させる
Avatar for Kazuki Chigita chigichan24
0
710
Family mrubyの進捗
Avatar for Katsuhiko Kageyama kishima
1
120
iOSDC2026登壇資料.pdf
Avatar for RioFujimon riofujimon
0
160
Building an Out-of-Order CPU
Avatar for Latte72 latte72
1
780
世界の中心で、AI（App Intents）をさけぶ ー App Intents中心設計の実践ガイド
Avatar for touyou touyou
0
580
【高い買い物LT会】初任給で話題の国産フィジカルAIを買った話
Avatar for 赤神青空 akagami
PRO
0
160
技術的負債の返済は、AI時代の複利で効く投資 — 経営としての意思決定とその遂行
Avatar for curekoshimizu curekoshimizu
0
1.4k
C#の現在地 進化の歴史と、AI時代の.NET Everywhere
Avatar for Yoshifumi Kawai neuecc
1
1.3k
動作中のプログラムの中身をリアルタイムに覗く / Realtime Debugger for CSharp with Roslyn
Avatar for Prota prota
0
110
20260914 AIエージェント時代のPlatform Engineering　LLM基盤とプロダクトの責務境界線
Avatar for Taiki Kanzaki kanfab1
7
2k
すこし踏み込む CancellationToken
Avatar for tkym htkym
0
110

Featured

See All Featured
Practical Orchestrator
Avatar for Shlomi Noach shlominoach
192
12k
Have SEOs Ruined the Internet? - User Awareness of SEO in 2025
Avatar for Akash Hashmi akashhashmi
0
500
Claude Code どこまでも/ Claude Code Everywhere
Avatar for nwiizo nwiizo
67
58k
Odyssey Design
Avatar for Ryan Kendrick rkendrick25
PRO
2
810
The Cost Of JavaScript in 2023
Avatar for Addy Osmani addyosmani
55
10k
Leading Effective Engineering Teams in the AI Era
Avatar for Addy Osmani addyosmani
9
2.6k
Abbi's Birthday
Avatar for Violet Bock coloredviolet
4
10k
Are puppies a ranking factor?
Avatar for Jono Alderson jonoalderson
2
3.9k
How to Talk to Developers About Accessibility
Avatar for Jason CranfordTeague jct
2
550
Lightning Talk: Beautiful Slides for Beginners
Avatar for Ines Montani inesmontani
PRO
2
690
Marketing Yourself as an Engineer | Alaka | Gurzu
Avatar for Gurzu gurzu
0
300
The Curse of the Amulet
Avatar for Matthew Lei leimatthew05
3
14k

Transcript

  1. LT: Outdated Browser Detection Dmitry Salahutdinov

  2. Why?

  3. None

  4. Frontend Pareto principle 10 % Uses actual browser 90 %

    10 % Old browsers 90 % Actual browsers usage Money spend for supporting browsers
  5. None

  6. Frontend headache

  7. Converts rules into list of browsers

  8. None

  9. Mozilla/5.0 (Windows NT 10.0; rv:54.0) Gecko/20100101 Firefox/54.0 ❌ Matches UA

    string with the list

  10. Js is not supported?

  11. Matches UA string with the list

  12. Frontend Backend Share the only one config

  13. Single project Frontend Backend RAILS_ROOT/browsers.json

  14. Separated frontend

  15. Gets back to frontend for browsers list

  16. Gets back to frontend for browsers list

  17. Caching the result

  18. dziękuję #❤ @dsalahutdinov1 @dsalahutdinov https://dev.to/amplifr https://amplifr.com https://dev.to/amplifr/outdated-browser-detection-with-browserslist-10co browserslist_useragent gem