wg-performance Status Update 2021-05-10

[samouri]

cc @ampproject/wg-performance

What was accomplished

Lessons Learned

What's Next

[samouri]

What was accomplished

• Prototyped server-rendering for classic components, and authored design doc
• Discovered bug in karma-mocha which has caused longstanding bugs in test infra, created a PR to fix: Report on failures after test complete. karma-runner/karma-mocha#237
• Enabled iterator polyfill: 🏗 runtime: allow for iterator polyfill amphtml#34249
• Increased type coverage, as well as fixed all JSC Parse errors: Types: fix all type parse errors and ensure no new ones crop up amphtml#34105, etc.
• Removed extension loading timeout: runtime: remove extension loading timeout amphtml#34058
• Fixed amp-toolbox CI which had been testing against main instead of the actual PR: CI: switch to pull_request from pull_request_target amp-toolbox#1227

What's Next

• Release on-duty this week.
• 3 week vacation starting EOW until June 6th. 🏖️

[rcebulko]

What was accomplished

• fully extracted assertion logic from Log system (♻️ Simplify log/assert code and use core assert amphtml#34061, ♻️ Extract type assertions out of log to multiple pure function calls amphtml#34088)
• core extraction + type-checking of css, resolvedPromise,
• import isolation + type-checking of polyfills (♻️ Organize polyfills in prep for type-checking and core extraction amphtml#34020, ♻️ Condense polyfills and lock down imports amphtml#34151, ♻️ Enable type-checking src/polyfills in CI amphtml#34239)
• improved Owners Bot caching (Improve handling of new and removed OWNERS files in cache amp-github-apps#1279) and added support for bots in reviewerPool ([owners] Support reviewerPool of users and/or teams in place of reviewerTeam property amp-github-apps#1284)

What's Next

• enabling array spread and rest params (Allow array spread and rest params amphtml#34282)
• exploring absolute import paths (♻️ Support absolute import paths amphtml#34264)
• updating assertion call sites to use core functions (♻️ Start updating assertions to use core/assert instead of src/log amphtml#34284)
• core extraction (♻️ Consolidating more core type helpers amphtml#34253) and modernization (♻️ Modernize some core code amphtml#34280)

[jridgewell]

What was accomplished

• Add Origin header to Vary when serving images: cl/370994902, 🚨 Error: [AMP cache] access-control-allow-origin CORS errors amphtml#32802
• Met with Chrome about Browser Year proposal
• Documented Origin Trials on Google AMP Cache: go/amp-cache-origin-trials

Lessons Learned

What's Next

• Manual testing AVIF+WebP image serving
• Designing server based SSR experimentation

[erwinmombay]

What was accomplished

• fix internal experimentation layer
• added new experiment for avif/webp cr/372622606

What's Next

• font testing results
• work with components team on LCP problem and amp-consent