MEMBRANE
alpha
What is Membrane?
Stateful serverless TypeScript for internal tools.
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?
Stateful serverless TypeScript for internal tools.
FEATURESEXAMPLES
Features Walkthrough
Communication
- 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.
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