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Hasty Treat - Old Browsers, Fallbacks and Polyfills - Part 3
π Download ShowβοΈ Edit Show NotesIn this Hasty Treat, Scott and Wes conclude a three-part series about old browsers, fallbacks and polyfills. In part three, they talk specifically about transpiling and polyfilling.
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Show Notes
2:20 - Polyfills and Transpile
5:18 - Back in the day
- Border-radius htc hack
- PNG fix for transparent PNGs
- Flash for custom fonts
- Cufon and SIFR
10:48 - JavaScript Polyfills
- Features are polyfilled
- MDN Polyfill
- Core-js
- Polyfill.io
- HTML5 Cross Browser Polyfills
13:47 - JavaScript Transpile
- Syntax is transpiled
- babel-preset-env
- Babel has plugins and presets
- Meteor bundle to different browsers on demand
- There are polyfills for most things, but performance can be an issue
- Resize observer
- Intersection Observer
- Some things canβt be done with either
- New browser APIs
- Service workers, device access, inline video on old iOS, etc.
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