LLRT Roadmap & Priorities

[richarddavison]

Below is a high level list of LLRTs priorities and roadmap items. Note that these are not final and are subject to change.

2024

• ~~Increased WinterCG compliance~~ ✅
• ~~SubtleCrypto~~ https://github.com/awslabs/llrt/issues/184 ✅
• ~~Switch to more activity maintained~~ QuickJS - Next Generation fork ✅
• Better documentation (website, examples, do's and dont's etc)
• ~~Partially native web streams~~✅
• ~~Increased release cadence~~✅

2025

• HTTP & HTTPs module
• PGO + PLO + Bolt/Propeller optimized binaries
• 1.0 release
• TLS sockets/connections
• WebSockets
• Native Streams
• Better unhandled promise rejection tracking
• Better local development experience
• Debugger

[o-alexandrov]

If reasonable, please consider to add a note on the expected AWS-managed LLRT runtime for Lambda service. It should slightly improve cold starts due to the runtime caching, making LLRT even more appealing to use

[ahaoboy]

Have you considered adding stdin for reading user input?

[ahaoboy]

https://github.com/quickjs-ng/quickjs/issues/374

The ideal situation is that the upstream qjs-ng and qjs will be merged, but it seems that this is not going well.

[richarddd]

quickjs-ng/quickjs#374

The ideal situation is that the upstream qjs-ng and qjs will be merged, but it seems that this is not going well.

We'll soon move to qjs-ng. We're waiting for https://github.com/DelSkayn/rquickjs/pull/369 and https://github.com/DelSkayn/rquickjs/pull/373 to be finalized. This is not to far away.

[codingnuclei]

Very exciting 🎉

Would Partially native web streams look to cover this: https://github.com/awslabs/llrt/issues/318

or would that be more inline with 2025 Native Streams

[richarddd]

Very exciting 🎉

Would Partially native web streams look to cover this: #318

or would that be more inline with 2025 Native Streams

Likely the latter. We’d rather ship a more complete steams API than cut corners. But depending on how fast we can progress with the more feature complete stream API we can also do a lighter version similar to the spawn streams.

[cjnoname]

The roadmap sounds promising! I'm just wondering, if v1 is released, would LLTR become one of the default runtimes on AWS Lambda?

[ahaoboy]

Will there be a way to read user input?

https://github.com/awslabs/llrt/issues/175

[Brody8TY]

Are you planning on adding Intl support? I was unable to find a reference to the Intl api in the roadmap. TIA

[dreamorosi]

I'd like to suggest adding node:async_hooks and especially AsyncLocalStorage and AsyncResource to the roadmap.

They'd be very helpful when it comes to observability-related use cases since they help library authors maintain state without risks of leaking data across Lambda invocations.

[georeeve]

As a dependency to async_hooks, it's probably worth adding xray sdk support too (#628). A majority of our lambdas use xray tracing, and as such we can't migrate them to LLRT without losing that observability.

[darcyclarke]

Any chance you could add #787 to the roadmap? Would be great to see this as part of a 1.0 release if not much sooner. LLRT is a perfect fit for lightweight CLIs & I could see usage growing significantly if it were easy to create a single executable.

[chessbyte]

Is there an ETA on the 1.0 release?