pikku-deploy-express

name	pikku-deploy-express
description	Use when deploying a Pikku app with Express. Covers PikkuExpressServer standalone and pikkuExpressMiddleware for existing Express apps. TRIGGER when: code imports @pikku/express or @pikku/express-middleware, user mentions Express deployment, or start.ts creates a PikkuExpressServer. DO NOT TRIGGER when: just defining functions/wirings without Express-specific code.

Pikku Express Deployment

Agent Operating Procedure

Use this skill as an execution checklist, not reference material.

1. Discover before editing. Prefer OpenCode tools such as pikku-meta when available; otherwise run the relevant pikku meta ... --json command and inspect only the focused output you need.
2. Identify the source files that own the behavior. Do not start by reading generated output, .pikku, node_modules, vendored packages, or broad build artifacts.
3. Make the smallest source change that satisfies the task. Keep generated files generated, and avoid hand-editing SDKs, schema output, or typegen.
4. Validate with the narrowest relevant command first, then run pikku-verify or pikku all when functions, wirings, schemas, or generated clients may have changed.
5. If validation fails, fix the source cause and rerun validation. Do not paper over generated errors by editing generated files.

Standalone Server

yarn add @pikku/express

import { PikkuExpressServer } from '@pikku/express'
import './.pikku/pikku-bootstrap.gen.js'
import { createConfig, createSingletonServices } from './services.js'

const config = await createConfig()
const singletonServices = await createSingletonServices(config)

const appServer = new PikkuExpressServer(
  { ...config, port: 4002, hostname: 'localhost' },
  singletonServices.logger
)
appServer.enableExitOnSigInt()
await appServer.init()
await appServer.start()

Constructor: new PikkuExpressServer(config, logger)

Config extends CoreConfig with:

• port: number
• hostname: string
• healthCheckPath?: string
• limits?: Partial<Record<string, string>>
• content?: LocalContentConfig (for static assets / file uploads)

Methods:

• init(httpOptions?): Promise<void> — Register middleware and routes
• start(): Promise<void> — Start listening
• stop(): Promise<void> — Graceful shutdown
• enableExitOnSigInt(): Promise<void> — SIGINT handler
• enableCors(options): void — Enable CORS
• enableStaticAssets(): void — Serve static files (requires content config)

Property: app: Express — Direct access to Express instance for custom middleware.

Middleware (existing Express app)

yarn add @pikku/express-middleware

import express from 'express'
import { pikkuExpressMiddleware } from '@pikku/express-middleware'
import './.pikku/pikku-bootstrap.gen.js'

const app = express()
app.use(
  pikkuExpressMiddleware({
    logger: singletonServices.logger,
    logRoutes: true,
    loadSchemas: true,
  })
)