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lyrra-sdk

v0.2.3

Published

Official Lyrra SDK — drop-in observability (errors / RUM / heartbeat) with one install. Works in browser, Node, Next.js, Express, Hono, and Cloudflare Workers.

Readme

lyrra-sdk

Official SDK for Lyrra — Japanese monitoring SaaS that ships errors, RUM (Web Vitals), and heartbeat in one drop-in package.

ESM only. Works in browsers, Node, Next.js, Express, Hono, and edge runtimes.

Install

pnpm add lyrra-sdk
# or
npm install lyrra-sdk

Quick start (browser)

import { init } from "lyrra-sdk/browser";

init({
  appKey: "pk_xxx",          // get this from the Lyrra dashboard
  endpoint: "https://event.lyrra.net",
  // optional:
  release: process.env.RELEASE_TAG,
  environment: "production",
});

init wires up:

  • global window.onerror + unhandledrejection error capture
  • Web Vitals (CLS / LCP / INP / FCP / TTFB)
  • a 60-second heartbeat ping

Next.js

// app/layout.tsx
import { LyrraClient } from "lyrra-sdk/next/client";

export default function RootLayout({ children }) {
  return (
    <html>
      <body>
        <LyrraClient appKey={process.env.NEXT_PUBLIC_LYRRA_APP_KEY!} />
        {children}
      </body>
    </html>
  );
}
// server actions / route handlers
import { trackError } from "lyrra-sdk/next/server";

Express

import express from "express";
import { lyrraErrorHandler } from "lyrra-sdk/express";

const app = express();
// ... your routes
app.use(lyrraErrorHandler({ appKey: process.env.LYRRA_APP_KEY! }));

Hono

import { Hono } from "hono";
import { lyrra } from "lyrra-sdk/hono";

const app = new Hono();
app.use("*", lyrra({ appKey: env.LYRRA_APP_KEY }));

API surface

  • trackError(err, ctx?) — manual error capture
  • trackRum(metric) — manual Web Vitals submission
  • sendHeartbeat() — manual heartbeat
  • flush() — force-send the queue (useful before page unload)
  • destroy() — tear down listeners

License

MIT