laminar

laminar is a 3kb HTTP pipeline library for Node.js and edge runtimes. It is deliberately minimal: no routing, no templating, just a clean composable middleware model with a fully typed context object.

Example

import { pipeline, compose } from 'laminar'

const logger = async (ctx, next) => {
  console.log(`${ctx.method} ${ctx.url}`)
  const res = await next(ctx)
  console.log(`-> ${res.status}`)
  return res
}

const auth = async (ctx, next) => {
  if (!ctx.headers.authorization) {
    return { status: 401, body: 'Unauthorized' }
  }
  return next({ ...ctx, user: parseToken(ctx.headers.authorization) })
}

const handler = compose(logger, auth, myRouteHandler)
export default pipeline(handler)

Design goals

• Zero dependencies — ships as pure ESM with no transitive deps
• Edge-first — runs on Cloudflare Workers, Vercel Edge, Deno Deploy
• Typed context — middleware can widen the context type; downstream handlers see the enriched type

Status

v1.2.1. Stable API. Actively maintained.