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ATProto-based AI Assistant Chat interface.
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// Runs the dev server behind a localhost.run tunnel, so a phone or another device can sign in over// HTTPS. It needs only ssh and no account. The tunnel URL becomes PUBLIC_URL for this run only,// and .env is left as it is. With --start it runs the built app in production instead, as// `pnpm start` does. Not a Cloudflare quick tunnel, which holds back a reply's stream until it ends.
if (existsSync('.env')) process.loadEnvFile('.env')else if (existsSync('../../.env')) process.loadEnvFile('../../.env')
if (!process.env.OAUTH_PRIVATE_KEYS) { console.error('OAUTH_PRIVATE_KEYS is required, since a tunnel URL needs a confidential client.') console.error('Generate one with `pnpm keys` and put it in .env.') process.exit(1)}
const start = process.argv.includes('--start')const args = process.argv.slice(2).filter((arg) => arg !== '--start')// The tunnel forwards to the next free port when this one is taken, and the server listens there.const port = String(await findFreePort(Number(process.env.PORT || 3000)))const children: ChildProcess[] = []
/** Stop every child, then exit with the given code. */function exit(code: number): never { for (const child of children) child.kill('SIGTERM') process.exit(code)}process.on('SIGINT', () => exit(0))process.on('SIGTERM', () => exit(0))
const tunnel = spawn( 'ssh', [ // The first connection trusts localhost.run's host key rather than asking. '-o', 'StrictHostKeyChecking=accept-new', '-o', 'ServerAliveInterval=30', '-o', 'ExitOnForwardFailure=yes', '-T', '-R', `80:localhost:${port}`, 'nokey@localhost.run', ], { stdio: ['ignore', 'pipe', 'pipe'] },)children.push(tunnel)tunnel.on('error', () => { console.error('ssh not found.') exit(1)})tunnel.on('exit', (code) => { console.error(`The tunnel closed with code ${code}. Run this again for a new URL.`) exit(code ?? 1)})
// localhost.run prints the tunnel's URL once it has one.const publicUrl = await new Promise<string>((resolve) => { let log = '' const timeout = setTimeout(() => { console.error(`localhost.run gave no tunnel URL within 30 seconds:\n${log}`) exit(1) }, 30_000) const read = (chunk: Buffer) => { log += chunk.toString() const match = log.match(/https:\/\/[a-z0-9-]+\.lhr\.life/) if (!match) return clearTimeout(timeout) for (const stream of [tunnel.stdout, tunnel.stderr]) { stream?.removeListener('data', read) stream?.resume() } resolve(match[0]) } tunnel.stdout?.on('data', read) tunnel.stderr?.on('data', read)})
console.log(`\nTunnel: ${publicUrl}\n`)
const server = spawn( process.execPath, start ? ['src/index.ts', ...args] : ['--watch', 'src/index.ts', ...args], { stdio: 'inherit', env: start ? { ...process.env, NODE_ENV: 'production', PORT: port, PUBLIC_URL: publicUrl } : { ...process.env, PORT: port, PUBLIC_URL: publicUrl, // Vite's dev server rejects requests for hosts it doesn't know. __VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS: new URL(publicUrl).hostname, }, },)children.push(server)server.on('exit', (code) => exit(code ?? 0))