Tech Lead at Taktile.
Formerly Firebase, Google
CORS Proxy fetchpAutomatically Backup Observable notebooks to GithubStarting Github Action Workflows From ObservableFirebase and Firebase UI (v8)notebookSnapshot()Reactive Unit Testing and Reporting FrameworkBulmaStripeRidiculously Rapid Software-as-a-Service (SaaS) development with Observable, Firebase and StripeUsing Express Router for Serverside CellsAWS Serverless Notebooks SimplifiedSVG Timeseries to GIFMetaprogramming with Peek [Not recommended for production user]AWS HelpersMixed Integer / Linear ProgrammingRedis Serialization Protocol (RESP) Client for the Web👋 Hello NunjucksThe Google 'VS' trickaws4fetch@observablehq/inspector@5.0.1escodegen@2.1.0SortableJSTextFit@2.4.0CodeMirror 6 + Javascriptgolden-layout@2.6.0trackParent and preserveFocus
Detect notebook runtime errors with catchAll((cellName, reason) => {...})
errorCell = {
errorTrigger;
// Errors thrown here are picked up by catchAll
throw new Error("An error " + Math.random().toString(16).substring(3));
}
catchAll((cellName, reason) => {
mutable errorLog = mutable errorLog.concat({
cellName,
reason
});
}, invalidation)
viewof error = {
const view = Inputs.input();
const notify = (event) => {
view.value = event.detail.error;
view.dispatchEvent(new Event("input", { bubbles: true }));
};
const processInspectorNode = (el) => {
el.addEventListener("error", notify);
};
// Attach to current cells
[...document.querySelectorAll(".observablehq").values()].forEach(
processInspectorNode
);
// Watch for new cells
const root = document.querySelector(".observablehq-root");
if (root) {
const observer = new MutationObserver((mutationList, observer) => {
for (const mutation of mutationList) {
[...mutation.addedNodes].forEach(processInspectorNode);
}
});
observer.observe(root, {
childList: true
});
invalidation.then(observer.disconnect);
}
return view;
}
catchAll = (handler, invalidation) => {
const listener = () => handler("unknown", viewof error.value);
viewof error.addEventListener("input", listener);
if (invalidation)
invalidation.then(() => {
viewof error.removeEventListener(listener);
});
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.