Fronteers 2019 - Day 1

Porteneuve - ES proxies

• Porteneuve organises Dot.js, Paris, December
• Reflect API - Low level JS API similar to proxies
• Proxies
• Note to self: can proxies be used to correct the min/max filters?
• Again somebody is super enthusiastic about Immer. There’s an Egghead course as well.

Joubran - App like PWA’s

To mimic an app:

• Create an app shell
• Keep first load under 40kB
• Make use of Workbox
• Use code splitting
• Use script type=module to handle external JavaScript as modules
• Scroll snap
• Show “Still loading” for chunks loading longer than 3s
• Defer non-critical content with requestIdleCallback()
• Amazing talk, slides at jadjoubran.io/fronteers19

Rest

• animation-delay=-2s can have a negative value so the animation looks like it has started in the past already
• An input can be :valid and :invalid
• React vs web components by Paul Lewis
• Custom elements (web components) do not always play well together with the modern JS libraries: custom-elements-everywhere.com