wg-performance Status Update 2021-03-29

[erwinmombay]

What was accomplished

• fixed the new ts server not respecting the host and font when transforming the documents fix server transformer not respecting host and port overrides amphtml#33425
• ongoing work to support avif

Lessons Learned

What's Next

• additional font testing exploration focused on sub font and fallback font

[rcebulko]

What was accomplished

• finalized main approach to compiler backend
• buil on-duty rotation
• work in progress on assertion cleanup

What's next

• testing for assertion code DCE-ing
• compiler security and privacy review

[jridgewell]

What was accomplished

• npm binary generation: 1, 2
• "Fix" preact setting vnode as ref on functional component: 1, 2
• Optimize esbuil-babel plugin: 1, 2
• Ignore .babel-cache in build tools: 1, 2
• Speed up dep-check by reusing unminified (amp build's babel config) babel transforms cache: 🏗 Reuse unminified babel config for faster dep-checks amphtml#33453
• Make Babel startup faster by removing large lodash deps:
  1. Remove lodash sortBy use babel/babel#13021
  2. Remove some lodash/cloneDeep calls babel/babel#13032
  3. Remove lodash/pull babel/babel#13026
  4. Remove lodash from @babel/node tests babel/babel#13025
  5. Remove lodash from babel-compat-data babel/babel#13024
  6. Remove lodash/has babel/babel#13023
  7. Remove lodash/chunk babel/babel#13022
• Fix concurrent builds race conditions in karma-esbuild: Prevent concurrent builds from happening marvinhagemeister/karma-esbuild#27
• Use <link rel=modulepreload> for preloading modules: cl/363312002
• Extract <link rel=modulepreload> to Link header: cl/363070494
• Ensure module/nomodule both have custom-element/custom-template tag: cl/363482949
• Copy optional crossorigin attribute from scripts to <link> preloads: cl/363521960
• Add imagesizes/imagesrcset support to <link rel=preload as=image>: cl/364314779
  • Design Doc
• Experiment with disabling image preloads: cl/364314779
• Propagate crossorigin attribute to image SSR: cl/363467332

Lessons Learned

What's Next

• Reviewing changes to Google AMP Cache serving for AVIF images
• Finally starting on Compiler language

[erwinmombay]

• Got gulp dev server to start in 1s!
• Lots of amp-script work. Have a first PR ready for untrusted 3p script support via sandboxed worker.
• Progress on cloudflare worker