nitroping

This package is part of the nitroping-sdk monorepo. The npm package name (nitroping) is unchanged. See the top-level README for SDKs in other languages.

nitroping-js

Zero-dependency TypeScript SDK for nitroping.
Send push notifications, register devices, verify webhooks. Pure ESM, works in Node, Bun, Deno, Cloudflare Workers, and browsers.

Why nitroping?

nitroping is a hosted push notification service that unifies APNs (iOS), FCM (Android), and Web Push behind one API. Send to a single device, a user across all of their devices, or every device in your app with one HTTP call. The service handles fanout, retries, idempotency, quota and outbound webhooks for delivery state — you write the product, not the plumbing.

nitroping-js is the official TypeScript client. It has zero runtime dependencies, ships as native ESM with full type definitions, and runs anywhere modern JavaScript runs: Node 18+, Bun, Deno, Cloudflare Workers, Vercel Edge, and the browser. The whole bundle is small enough to drop into serverless without thinking about it.

Install

npm install nitroping
# or
pnpm add nitroping
# or
bun add nitroping
# or
yarn add nitroping

Quick Start

Send a notification (server)

import { Nitroping } from "nitroping"

const np = new Nitroping({ apiKey: process.env.NITROPING_API_KEY! })

const result = await np.notifications.send(
  {
    title: "Order #4129 shipped",
    body: "Your package is on its way.",
    deepLink: "https://example.com/orders/4129",
    actions: [
      { id: "track", title: "Track" },
      { id: "view", title: "View order" },
    ],
    target: { userIds: ["user-42"] },
  },
  { idempotencyKey: "order-shipped-4129" },
)

console.log(result.id, result.status) // "abc-...", "queued"

Register a Web Push device (browser)

import { subscribeWebPush } from "nitroping/web"

const { device } = await subscribeWebPush({
  publicKey: "pk_live_...",
  appId: "0e1d2c3b-4a59-6877-9876-543210abcdef",
  userId: "user-42",
})

console.log("Subscribed device", device.id)

Then drop a tiny /public/sw.js that handles push:

self.addEventListener("push", (event) => {
  const data = event.data?.json() ?? {}
  event.waitUntil(
    self.registration.showNotification(data.title ?? "Notification", {
      body: data.body,
      icon: data.icon,
      data: { deepLink: data.deep_link },
    }),
  )
})

self.addEventListener("notificationclick", (event) => {
  event.notification.close()
  const url = event.notification.data?.deepLink ?? "/"
  event.waitUntil(self.clients.openWindow(url))
})

Verify a webhook (server)

import { verifyWebhook } from "nitroping/webhooks"

export async function POST(request: Request) {
  const body = await request.text()
  const signature = request.headers.get("x-nitroping-signature")

  try {
    const event = await verifyWebhook({
      body,
      signature,
      secret: process.env.NITROPING_WEBHOOK_SECRET!,
    })

    if (event.type === "notification.delivered") {
      console.log("delivered", event.data["notification_id"])
    }
  } catch (err) {
    return new Response("signature error", { status: 400 })
  }

  return new Response("ok")
}

Tree shaking

Three independent entry points — import only what you need:

import { Nitroping } from "nitroping" // server: send + devices
import { subscribeWebPush } from "nitroping/web" // browser: subscribe + register
import { verifyWebhook } from "nitroping/webhooks" // server: webhook verify

The web and webhooks modules don't pull the HTTP client in, so a server that only verifies webhooks doesn't ship any request code, and a browser app that only subscribes doesn't ship anything secret-key-flavored.

API reference

new Nitroping(options)

Creates a server-side client.

const np = new Nitroping({
  apiKey: "np_live_...", // or omit + set NITROPING_API_KEY env var
  baseUrl: "https://nitroping.dev", // optional, default shown
  timeoutMs: 30_000, // optional, default 30s. 0 = disable.
})

np.notifications.send(input, options?)

Sends a notification. Returns { id, status }. Throws NitropingError on non-2xx with the server's code, message, and per-field details.

await np.notifications.send(
  {
    title: "Welcome!",
    body: "Glad to have you on board.",
    icon: "https://example.com/icon.png",
    image: "https://example.com/hero.png",
    deepLink: "https://example.com/welcome",
    data: { onboarding: true },
    actions: [{ id: "tour", title: "Take the tour" }],
    target: { all: true },
  },
  { idempotencyKey: "welcome-user-42" },
)

target is a discriminated union — exactly one of:

Selector	Use when
{ all: true }	Broadcast to every active device
{ deviceIds: [...] }	Hit specific device rows
{ userIds: [...] }	Hit every device row a user owns

np.notifications.get(id)

Fetch a previously-enqueued notification by id. Returns the full row (with counters: total_sent, total_delivered, total_failed, etc).

const n = await np.notifications.get("abc-123")
console.log(n["counters"])

np.devices.register(input)

Register a device with the secret API key. Use this for iOS / Android where you control the server. Returns { id, created } — created is false when an existing row matched on (token, user_id).

await np.devices.register({
  platform: "ios",
  token: deviceToken, // raw APNs hex token
  userId: "user-42",
  metadata: { app_version: "2.4.1" },
})

np.devices.deactivate(id)

Sets status = inactive on the device row. Subsequent sends skip it.

await np.devices.deactivate("device-id")

subscribeWebPush(options) — nitroping/web

Browser-only. Registers a service worker, asks for permission, fetches the VAPID public key, calls pushManager.subscribe, and registers the resulting endpoint with nitroping — all in one call.

import { subscribeWebPush } from "nitroping/web"

const { device, subscription } = await subscribeWebPush({
  publicKey: "pk_live_...", // public, safe to ship in bundles
  appId: "uuid-of-the-app",
  serviceWorkerPath: "/sw.js", // optional, default shown
  serviceWorkerScope: "/", // optional
  userId: "user-42", // optional — enables { userIds: [...] }
})

Idempotent — call on every page load; the server dedupes on (app_id, token).

verifyWebhook(options) — nitroping/webhooks

Verifies the X-Nitroping-Signature header and returns the parsed event.

import { verifyWebhook } from "nitroping/webhooks"

const event = await verifyWebhook({
  body: rawString,
  signature: request.headers.get("x-nitroping-signature"),
  secret: process.env.NITROPING_WEBHOOK_SECRET!,
  tolerance: 300, // optional, seconds. Default 300.
})

The signing scheme is HMAC-SHA256 over "<unix>.<raw body>". The header ships as t=<unix>, v1=<hex> — same as Polar / Stripe. Use the raw request body string (not a re-serialized parsed object) or the HMAC won't match.

Framework recipes

Express / Fastify webhook handler

import express from "express"
import { verifyWebhook } from "nitroping/webhooks"

const app = express()

app.post(
  "/webhooks/nitroping",
  express.raw({ type: "application/json" }), // keep the raw body
  async (req, res) => {
    try {
      const event = await verifyWebhook({
        body: req.body.toString("utf8"),
        signature: req.header("x-nitroping-signature"),
        secret: process.env.NITROPING_WEBHOOK_SECRET!,
      })
      // ...handle event...
      res.status(200).send("ok")
    } catch {
      res.status(400).send("bad signature")
    }
  },
)

Hono / Cloudflare Workers

import { Hono } from "hono"
import { Nitroping } from "nitroping"
import { verifyWebhook } from "nitroping/webhooks"

interface Env {
  NITROPING_API_KEY: string
  NITROPING_WEBHOOK_SECRET: string
}

const app = new Hono<{ Bindings: Env }>()

app.post("/send", async (c) => {
  const np = new Nitroping({ apiKey: c.env.NITROPING_API_KEY })
  const result = await np.notifications.send({
    title: "Hello from Workers",
    body: "Running on the edge",
    target: { all: true },
  })
  return c.json(result)
})

app.post("/webhooks", async (c) => {
  const event = await verifyWebhook({
    body: await c.req.text(),
    signature: c.req.header("x-nitroping-signature"),
    secret: c.env.NITROPING_WEBHOOK_SECRET,
  })
  return c.json({ received: event.id })
})

export default app

Next.js App Router

// app/api/notify/route.ts
import { Nitroping } from "nitroping"

export const runtime = "edge"

export async function POST(request: Request) {
  const np = new Nitroping({ apiKey: process.env.NITROPING_API_KEY! })
  const { title, body } = await request.json()

  const result = await np.notifications.send({
    title,
    body,
    target: { all: true },
  })
  return Response.json(result)
}

// app/api/webhooks/nitroping/route.ts
import { verifyWebhook } from "nitroping/webhooks"

export async function POST(request: Request) {
  const body = await request.text()
  const event = await verifyWebhook({
    body,
    signature: request.headers.get("x-nitroping-signature"),
    secret: process.env.NITROPING_WEBHOOK_SECRET!,
  })

  // event.type: "notification.delivered" | "notification.failed" |
  //             "notification.opened" | "notification.clicked" | "webhook.test"
  return Response.json({ ok: true, type: event.type })
}

Errors

Every error thrown by the SDK extends NitropingError. Narrow by instanceof to handle specific cases:

Class	When it fires
NitropingError	Base class. Any non-2xx response, or any internal failure with no more specific subclass.
NetworkError	fetch rejected (DNS, TLS, offline, abort). Original cause attached via cause.
InvalidSignatureError	verifyWebhook HMAC mismatch, missing header, malformed header.
TimestampOutOfRangeError	verifyWebhook signature valid but t= outside the tolerance window.
WebPushUnsupportedError	subscribeWebPush running where Service Worker / Push API isn't available.
PermissionDeniedError	subscribeWebPush and the user (or browser policy) blocks notifications.

import { Nitroping, NitropingError, NetworkError } from "nitroping"

try {
  await np.notifications.send({ title: "Hi", body: "There", target: { all: true } })
} catch (err) {
  if (err instanceof NetworkError) {
    // transient — retry with backoff
  } else if (err instanceof NitropingError && err.code === "quota_exceeded") {
    // surface "upgrade your plan" UI
    console.log(err.details) // { quota, used, resets_at }
  } else {
    throw err
  }
}

TypeScript

Type declarations ship in the package — no separate @types/... install needed. The SDK targets ESNext with strict mode and avoids any in the public surface. All public types (SendNotificationRequest, NotificationTarget, WebhookEvent, etc.) are exported from the main entry.

Runtime support

Runtime	Status
Node 18 +	Yes
Bun 1.0 +	Yes
Deno 1.30 +	Yes
Cloudflare Workers	Yes
Vercel Edge Runtime	Yes
Modern browsers	Yes (nitroping/web + nitroping/webhooks)

nitroping (the server SDK) is also usable in the browser, but you should not ship the secret np_ key — use nitroping/web with a public pk_ key instead.

License

MIT — Copyright (c) 2026 productdevbook.

_{Built by @productdevbook — nitroping.dev · OSS core}