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Outdated browser detection with Browserslist

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
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

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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