The AMP Project Roadmap

What was accomplished

• Design doc and design review for validator changes needed for module/nomodule https://docs.google.com/document/d/1aD7MSHNlS8MsyBOjBx57OuLxVuIMPXVWDIrjt0ItzM8/edit#heading=h.hyyaxi8m42a
• FixedLayer experiment merged (but turned off due to failing test on master)

Lessons Learned

• Experiment tests do not run on PRs in CI

What's Next

• Turn on Integration tests for module build (carry over, blocking module/nomodule launch)
• Investigate removal of AmpCodingConvention.java
• Investigate/resolve conflict with sidebar tests & FixedLayer experiment
• Wrap up RAIL metrics in amp-analytics work

What was accomplished

• Reduce size of v0.mjs to 60.07kb, as a result of landing several optimization changes.
• Move from resorcery to @ampproject/remapping.
• Introduce Post Closure Babel Compilation Pipeline for Multi-Pass.
• Remove padding-top adjustment during boot on origin documents.
• Fix accidental compilation of ES Classes in Module Build.
• Prototype and land new local server for development, supporting Modules.
• Test framework for Document transforms, intended for usage across different transformers (AMP Caches, Optimizer, AMP Wordpress).
• Fix error reporting to identify module build.
• Add module build explainer.

Lessons Learned

• Buy a good chair for home.

What's Next

• postHTML transforms in integration tests (in progress).
• Start work on AMP optimizer and validator for module build changes.
• Slight refactor of babel-plugin-transform-function-declarations.
• Remove indirection for AMP Configuration, allowing plural AMP Caches and AMP Optimizer to support Module Builds.
• Moving FixedLayer to extension
• Send page load performance metrics to CSI

What was accomplished

• add mjs files for experiments added on experiments-config.js
• fixed single pass to work with Preact work
• Tracked down common sources of low performance due to layout shift and high largest contentful paint and created tracking issues:
• https://github.com/ampproject/amphtml/issues/27228
• https://github.com/ampproject/amphtml/issues/27229
• https://github.com/ampproject/amphtml/issues/27230

Lessons Learned

• fast internet is expensive

What's Next

• fix integration tests for module build (in progress)
• build pipeline for local development automatically uses module / nomodule

What was accomplished

Kris

• added post closure compiler transformation processing step
• Remove doc css and base css from ESM build, which is a 10% improvement from the output size (62.61 kb <- 72.88 kb)
• Move the ampproject from using brotli-size library to filesize (brotli compression on multiple cores, improves task on machines with higher cpu cores)

Erwin

• Fixed render delaying extensions preloading for module builds
• On duty (partially 1st week)
• Ramped up module builds to 5% (seeing traffic)
• Fixed single pass code to work with JSX (in review)

Kevin

• Wrote proposal to move FixedLayer from runtime to viewer integration extension (save 36kb unminified, uncompressed)
• Investigating AMP pages with poor RAIL metrics to identify areas of work for performance improvements

Lessons Learned

Kris

• Travis VMs are lower powered than Github Actions ones.

Erwin

Kevin

What’s next

Kris

• Assist Working Groups with Performance Analysis on real-world devices

Erwin

• Ramp up module to 50%
• Get all tests to work with module build
• Add module/nomodule pattern to AMP packager

Kevin

• Take FixedLayer proposal to design review
• Writeup for using DOM Purify only in cache (remove from extensions on origin)