MEMBRANE
alpha
What is Membrane?
A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.
FEATURESEXAMPLES
example hn follow
Uses the hn Driver to "follow" users on Hacker News and get notifications (email or SMS) when they post something new.
Set up a "cron-job" timer that invokes
check
periodically.Store "last seen" in
state
for persistence.Send yourself an text message
import { nodes, root, state } from "membrane";
const { hn, sms } = nodes;
export function setup() {
root.check.$cron("30 35 * * * *");
}
export async function follow({ username }) {
const { id, submitted } = await hn.users
.one({ id: username })
.$query(`{ id submitted { items { id } } }`);
const lastSeen = submitted?.items?.[0]?.id ?? 0;
state[username] = { id, lastSeen };
}
export async function check() {
for (const [username, { lastSeen }] of Object.entries(state)) {
const items = await hn.users
.one({ id: username })
.submitted.items.$query(`{ id }`);
const latest = (items ?? [])[0];
if (latest?.id! > (lastSeen as number)) {
const url = `https://news.ycombinator.com/item?id=${latest.id}`;
await sms.send({ message: `New HN post from ${username}: ${url}` })
state[username] = latest.id!;
}
}
}
What is Membrane?
A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.
FEATURESEXAMPLES
Communication
If you're curious about Membrane's architecture, Juan joined the devtools.fm podcast to talk through the nuts and bolts.
- 2024-12-13 Changelog 0.14 Custom IDE theme; collapse all types
- 2024-12-11 Stripe subscription webhooks A program to handle Stripe webhooks
- 2024-12-10 Slack signup alerts A program to send signup alerts on Slack
- 2024-12-06 Changelog 0.13 Program REPL, simplified IDE
- 2024-11-22 Changelog 0.12 Renaming & deleting programs; faster TS diagnostics
- 2024-11-15 Changelog 0.11 IDE layout updates; search & explore packages by user
- 2024-11-08 Changelog 0.10 Saving editor settings; HTTP endpoint previews
- 2024-11-01 Changelog 0.9 Program cloning; embedded docs in IDE
- 2024-10-25 Changelog 0.8 Package publishing; Navigator action logs
- 2024-10-18 Changelog 0.7 Simpler onboarding, new templates; better types
- 2024-10-04 Changelog 0.6 IDE text selection; GitHub, Anthropic driver upgrades
- 2024-09-27 Changelog 0.5 Better npm support; package sharing upgrades
- 2024-09-13 Changelog 0.4 Navigator file explorer; share page improvements
- 2024-09-06 Changelog 0.3 Support npm package types; Logs back navigation
- 2024-08-30 Changelog 0.2 Logs UI upgrades and better onboarding UX (examples)
- 2024-08-23 Changelog 0.1 Improved Navigator context menu and driver install UX
- 2024-06-19 Public Roadmap A Membrane program to share what we're working on
- 2023-09-20 Progress Update #3 Simpler function signatures; built-in Google auth
- 2023-09-13 Progress Update #2 Windows support and OOM handling
- 2023-08-30 Progress Update #1 Internal logging architecture; improved HTTP UI
- 2023-08-14 Progress Update #0 Exit nodes and Program Replays
Enter your email for occasional updates