Membrane.

A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.

Example of a Program for sending an email when a table in an Airtable is modified.

Subscribe to table changes

Get modified fields

Send email with record details.

import { nodes, root, state } from "membrane";

export async function configure() {
  await nodes.table.changed.$subscribe(root.tableChanged);
}

export async function tableChanged(_, { event }) {
  const { fields } = await event.record.$query(`{ fields }`);
  const formattedFields = JSON.parse(fields);

  let emailBody = ["Table has been changed. Details:\n"];

  for (const fieldName in formattedFields) {
    emailBody.push(`${fieldName}: ${formattedFields[fieldName]}`);
  }

  const subject = "Important: Airtable table has been changed";
  const body = emailBody.join("\n");

  await nodes.email.send({ subject, body });
}

INSTALL

A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.

Durable Programs ....................................................................................................0

Cron Jobs and Timers ....................................................................................................

Membrane Web IDE ....................................................................................................2

The Graph ....................................................................................................

Graph-based Access Control ....................................................................................................4

Observability ....................................................................................................

Instantanous Deploys ....................................................................................................6

Step Debugger ....................................................................................................

Custom Exit Nodes ....................................................................................................8

HTTP Endpoints ....................................................................................................9

Open Source Drivers (APIs) ....................................................................................................10

Code completion ....................................................................................................

SMS Reminders ....................................................................................................

Discord Weather Bot ....................................................................................................1

Mailchimp Alerts ....................................................................................................2

Follow Hacker News Users ....................................................................................................3

Airtable changes to Email ....................................................................................................4

Example of a Program for sending an email when a table in an Airtable is modified.

Subscribe to table changes

Get modified fields

Send email with record details.

import { nodes, root, state } from "membrane";

export async function configure() {
  await nodes.table.changed.$subscribe(root.tableChanged);
}

export async function tableChanged(_, { event }) {
  const { fields } = await event.record.$query(`{ fields }`);
  const formattedFields = JSON.parse(fields);

  let emailBody = ["Table has been changed. Details:\n"];

  for (const fieldName in formattedFields) {
    emailBody.push(`${fieldName}: ${formattedFields[fieldName]}`);
  }

  const subject = "Important: Airtable table has been changed";
  const body = emailBody.join("\n");

  await nodes.email.send({ subject, body });
}

INSTALL

Twitter Bot ....................................................................................................5

HTMX Form ....................................................................................................

Github Weekly Report ....................................................................................................7

Github Action Alert ....................................................................................................8

Github Commits on Discord ....................................................................................................9

Track HN Jobs in Google Sheets ....................................................................................................10

Mailchimp to airtable ....................................................................................................11

If you're curious about Membrane's architecture, Juan joined the devtools.fm podcast to talk through the nuts and bolts.

2024-12-20 Automating changelogs Automating Membrane changelogs with Membrane
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

Join us on Discord

Enter your email for occasional updates