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📦 Introducing shinyreact for R & Python Write your UI natively in React. Shrink your Shiny server to data-only logic. Agent Skills write the React for you. ✨ opensource.posit.co/blog/2026-09... This is the start! Tell us what you build and what breaks. #RStats #Python #Shiny #React

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Barret Schloerke @schloerke.com · 22/09/2026

Shiny for Python 1.8 is out! 🎉 Test your app's server logic without a browser 🪄 test_server() runs your app in memory: set inputs, let the reactive graph settle, assert on outputs. Plain, synchronous pytest. Also: ui.page_html() and session.allow_reconnect(). opensource.posit.co/blog/2026-09...

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Charlie Gao @shikokuchuo.net · 16/09/2026

Thrilled to have just presented "Never block, never copy. mirai + mori from Shiny to the cluster" at posit::conf(2026). The slides are available here: shikokuchuo.net/posit2026 mirai: mirai.r-lib.org mori: shikokuchuo.net/mori/ #tidyverse #rshiny #positconf2026

Never block. Never copy. install.packages(c("mirai", "mori"))

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Barret Schloerke @schloerke.com · 15/09/2026

🎤 Just presented “shinyreact: Building Custom Shiny UI with React” at posit::conf(2026) 🤔 Ever written JS or CSS inside an R string? shinyreact moves your UI to React: two hooks on the client, reactive_output() on the server. 📚 bit.ly/posit-2026-shinyreact #rstats #shiny #reactjs

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Barret Schloerke @schloerke.com · 17/05/2026

Yes, I believe it’d be needed. We’ve been tossing around the idea of swapping out httpuv for nanonext. @shikokuchuo.net … motivation! 🎉🏎️💨

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Libby Heeren @libbyheeren.bsky.social · 11/05/2026

Well, it's been a highly requested topic for the DS Lab, so @schloerke.com is going to come hang out with us on May 26th and talk about how HE uses worktrees! I hope you'll be able to make it that day!

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Libby Heeren @libbyheeren.bsky.social · 11/05/2026

❓Do you use git worktrees? ❓How would you describe worktrees to a newbie? ❓Do you use extensions in your IDE of choice to use them more easily? ❓Do you perhaps using a worktree-first workflow with something like Conductor or Superset? 🙏🏻 Tell me all your worktree things! #databs #rstats #pydata

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Barret Schloerke @schloerke.com · 02/04/2026

Shiny for Python 1.6 is out! Two big additions: toolbar components for compact, modern UIs (thank you, @enelson5.bsky.social!) and built-in OpenTelemetry support for production observability. Zero Shiny changes required w/ usual OTel config. `pip install -U shiny` 🔗: shiny.posit.co/blog/posts/s...

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Barret Schloerke @schloerke.com · 12/01/2026

gqlr v0.1.0 is now on CRAN! 🎉 A @graphql.org server for #rstats New in 0.1.0: ✨ GraphiQL interactive IDE support ✨ Verbose error messages for easier debugging 🐛 Fixed mutation execution validation 🔧 Removed pryr dependency 📚: schloerke.com/gqlr/ 🐙: github.com/schloerke/gqlr #RStats #GraphQL

schloerke.com

GraphQL Server in R

Server implementation of GraphQL <http://spec.graphql.org/>, a query language originally created by Facebook for describing data requirements on complex application data models. Visit <https://graphql...

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Barret Schloerke @schloerke.com · 12/01/2026

🎉 shinytest2 v0.5.0 is now on CRAN! ✨ AppDriver now auto-loads local packages - no more installing required! 🔧 Pass functions directly to AppDriver$new(app_dir=). Ex: Golem's run_app() 📦 New local_app_support() & with_app_support() helpers rstudio.github.io/shinytest2/ #rstats #rshiny

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Barret Schloerke @schloerke.com · 12/12/2025

Testing the app(s) within your R package: rstudio.github.io/shinytest2/a...

rstudio.github.io

Using shinytest2 with R packages

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Charlie Gao @shikokuchuo.net · 11/12/2025

I demonstrated OpenTelemetry at Japan.R 2025 last week as an example of ecosystem-wide innovation we're driving at Posit for #rstats. Now thanks to @schloerke.com we have it in a release version of Shiny. This was also a technology that other community speakers picked as one to watch in 2026!

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Barret Schloerke @schloerke.com · 10/12/2025

Shiny for R v1.12 is here with built-in OpenTelemetry support! 🎉 Trace sessions and reactive calculations in production with zero code changes. Just install {otel}/{otelsdk} and set your env vars. Learn more: shiny.posit.co/blog/posts/s... #RStats #RShiny #OpenTelemetry

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Barret Schloerke @schloerke.com · 22/10/2025

promises 1.4.0 is out! 🚀 * New `hybrid_then()` seamlessly handles both sync & async expressions * Add side effects to your promise chains with `then(tee=TRUE)` * OpenTelemetry tracing support install.packages("promises") Details: rstudio.github.io/promises/new...

rstudio.github.io

Changelog

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Barret Schloerke @schloerke.com · 18/09/2025

For the #parents and #ai users… Does your parenting style match your AI management style?? 🤔🤔 * Do you limit the _client_ to small/manageable tasks? * Do you let the _client_ fumble a few times before guiding it to the intended goal? * Should your _client_ always clean up after itself? 🧺😆

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Barret Schloerke @schloerke.com · 17/09/2025

Thank you for attending the #PositConf2025 Shiny session and all of your great questions! I'm excited to see the @opentelemetry.io integrations improve over time 🎉 🗣️: Observability at scale: Monitoring Shiny Applications with OpenTelemetry 🐙: github.com/schloerke/pr... #RStats #RShiny

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Barret Schloerke @schloerke.com · 10/09/2025

{otel} + #rstats is becoming a crazy partnership. This project has driven me to use/write {promises} in ways that makes my 🧠 ache 😅. The reward is worth it! See you at #PositConf2025 where I'll talk about this in more detail

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Barret Schloerke @schloerke.com · 10/09/2025

Dev branches for today 😉 But it's working!! 🎊🥳

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Carson Sievert (he/him) @cpsievert.bsky.social · 10/04/2025

Want to work with me on the Shiny team at @posit.co alongside @jcheng5.bsky.social @winstonchang.bsky.social @schloerke.bsky.social @grrrck.xyz? We're looking for another engineer, apply here posit.co/job-detail/?... #rstats #rshiny #ShinyConf #python #pydata

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