wg-runtime Status Update 2020-03-30

[samouri]

What was accomplished

Lessons learned

What's next

[samouri]

What was accomplished

• Launched amp-list initialization from amp-state (initialize amp-list from amp-state, finishing touches amphtml#27180)
• Converted DOMPurify to a service (DOMPurify: convert to a service amphtml#27260)
• Cached amp-access evaluations (access-expr: cache evaluations amphtml#27359)

Lessons learned

• If stacktraces aren't showing up properly in a connected device (phone/tablet etc.), try restarting the device.

What's next

• Remove element remeasurements after calls to toggleLoading (🚀 Optimize toggleLoading by letting the mutator skip measuring in specific cases. amphtml#27482)
• AMP.goBack I2S (✨ Amp Actions: AMP.goBack action should call history.back amphtml#26585)

[jridgewell]

What was accomplished

• Fixed sourcemaps with babel precompile
• Code Reviews for Bento and Infra
• Investigate iOS Scrolling issues

Lessons learned

What's next

• TC39
• Making createdCallback and connectedCallback cheap
  • Separating buildCallback from both
    • Resources may be destroyed with reparenting, which may be expensive
    • Pinterest page demonstrates
  • Extending SSR for more elements, possibly the output of what buildCallback would do?

[dreamofabear]

What was accomplished

• IntersectionObserver
  • Handle 1vp vs. 3vp case (prerender mode)
  • ...but tested on some complex pages and found a bunch of race conditions (e.g. Race condition in reparent vs. build amphtml#27483)
• Verified prerenderSize can be excised
• Enabled stale bot

Lessons learned

• Verify high-impact prototypes against complex, real-world pages

What's next

• Refactoring IntersectionObserver to use pass system in Resources