There's some pessimism that the long tail of old libraries won't support AC automatically through our patched Web APIs, won't be updated with Snapshot capturing, and so we'll have a ton of code that breaks context propagation

Recommendations:

• Not clear the extent of APIs that need to support snapshot/restore, would be nice to have a (probably non-exhaustive) list:

  • setTimeout, addEventListener, …
  • Any in TC39 side? I don't think so, only Promise APIs

• Add wrap method (static, maybe both static and prototype)

• Expand prior art section, explaining the difference between the current AC proposal

• Section detailing how to handle libraries that don't support and aren't updated to support propagation

• Section detailing alternatives:

  • Every closure captures a snapshot (ie, like Generator now does, but everything)
  • await hook so userland could implement instead of directly in language