wg-performance Status Update 2021-07-19

[erwinmombay]

cc @ampproject/wg-performance

What was accomplished

Lessons Learned

What's Next

[rcebulko]

What was accomplished

• ruled out simple approach to Bento compiler transformer (independent service required)
• expanded coverage of import sorting eslint rule (ampproject/amphtml#35226)
• moved builtins/ under src/ (ampproject/amphtml#35139, https://github.com/ampproject/amp.dev/pull/6035)

Lessons Learned

• sick dog == tired human
• thread-safety is complicated

What's Next

• standing up Bento compiler service
• investigating load-testing tooling
• expanding import/order coverage to all of src/

[erwinmombay]

What was accomplished

• compared web vitals CLS scores between manual font correction vs size-adjust. very positive results where CLS is 0 when fonts get upgraded and using size-adjust (chrome 92+)

Lessons Learned

What's Next

• start work on optimizing amp-geo to server side render amp-geo classes
• start external stylesheet experiment for render delay

[samouri]

What was accomplished

• Faster dev server rebuilds by debouncing on both leading/trailing edge: https://github.com/ampproject/amphtml/pull/35210
• Performance:
  • Faster initialization for amp-fit-text by avoiding innerHTML: https://github.com/ampproject/amphtml/pull/35180
  • Fix CLS during buildCallback of amp-fit-text: https://github.com/ampproject/amphtml/pull/35105
• Template support in bento-compiler
• Design review for Server-rendering Bento Components

Lessons Learned

• Structural types can be tricky

What's Next

• Bento Compiler
  • Open sourcing bento-compiler
  • Bringing tagId to the ast model (For 100% alignment with the google3 proto)
• Debugging WP/CF Worker issues

[jridgewell]

What was accomplished

• TC39
  • groupBy made Stage 1

Lessons Learned

What's Next

• Outlining JOLT