feat: JSR registry configuration (jsr.json) and publishing workflow

.github/workflows/jsr-publish.yml

@@ -0,0 +1,23 @@
+name: Publish to JSR
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Publish package to JSR
+        run: npx jsr publish

jsr.json

@@ -0,0 +1,13 @@
+{
+  "name": "@codebygarv/express-lens",
+  "version": "2.5.0",
+  "description": "Zero-dependency HTTP monitoring, APM metrics, percentile latencies, Prometheus format exporter, slow request profiler, and real-time web dashboard for Express, Fastify, Hono, and Next.js.",
+  "license": "MIT",
+  "exports": {
+    ".": "./index.ts",
+    "./express": "./src/adapters/express.ts",
+    "./fastify": "./src/adapters/fastify.ts",
+    "./hono": "./src/adapters/hono.ts",
+    "./next": "./src/next.ts"
+  }
+}

src/adapters/fastify.ts

@@ -6,11 +6,11 @@ import type { ExpressLensOptions } from '../middleware.ts';
 /**
  * Fastify plugin adapter for Express Lens HTTP monitoring and debugging.
  */
-export function fastifyExpressLens(options: ExpressLensOptions = {}) {
+export function fastifyExpressLens(options: ExpressLensOptions = {}): (fastify: any) => Promise<void> {
   const slowThresholdMs = options.slowThresholdMs != null ? options.slowThresholdMs : 500;
   const customRedactList = Array.isArray(options.redactHeaders) ? options.redactHeaders : [];
 
-  return async function expressLensPlugin(fastify: any) {
+  return async function expressLensPlugin(fastify: any): Promise<void> {
     const requestTimes = new WeakMap<any, number>();
 
     // 1. Hook into onRequest to record start time

src/adapters/hono.ts

@@ -7,11 +7,11 @@ import type { ExpressLensOptions } from '../middleware.ts';
  * Hono & Edge framework adapter for Express Lens HTTP monitoring and debugging.
  * Compatible with Hono, Cloudflare Workers, Deno, Bun, and Vercel Edge.
  */
-export function honoExpressLens(options: ExpressLensOptions = {}) {
+export function honoExpressLens(options: ExpressLensOptions = {}): (c: any, next: () => Promise<void>) => Promise<any> {
   const slowThresholdMs = options.slowThresholdMs != null ? options.slowThresholdMs : 500;
   const customRedactList = Array.isArray(options.redactHeaders) ? options.redactHeaders : [];
 
-  return async function middleware(c: any, next: () => Promise<void>) {
+  return async function middleware(c: any, next: () => Promise<void>): Promise<any> {
     const url = c.req.url || c.req.path || '/';
 
     // 1. Intercept /express-lens dashboard endpoints directly inside Hono

src/next.ts

@@ -6,11 +6,11 @@ import type { ExpressLensOptions } from './middleware.ts';
 /**
  * Higher-Order Function to wrap Next.js App Router route handlers with HTTP monitoring.
  */
-export function withExpressLens(handler: Function, options: ExpressLensOptions = {}) {
+export function withExpressLens(handler: Function, options: ExpressLensOptions = {}): (req: Request, context?: any) => Promise<Response> {
   const slowThresholdMs = options.slowThresholdMs != null ? options.slowThresholdMs : 500;
   const customRedactList = Array.isArray(options.redactHeaders) ? options.redactHeaders : [];
 
-  return async function expressLensNextHandler(req: Request, context?: any) {
+  return async function expressLensNextHandler(req: Request, context?: any): Promise<Response> {
     const startTime = globalThis.performance ? globalThis.performance.now() : Date.now();
     const url = req.url || '/';
     const method = req.method || 'GET';
@@ -102,8 +102,8 @@ export function withExpressLens(handler: Function, options: ExpressLensOptions =
  * Route handler for exposing the Express Lens dashboard in Next.js catch-all route.
  * Usage: export const GET = dashboardRoute(); inside app/api/express-lens/[[...route]]/route.ts
  */
-export function dashboardRoute() {
-  return async function handleNextDashboard(req: Request) {
+export function dashboardRoute(): (req: Request) => Promise<Response> {
+  return async function handleNextDashboard(req: Request): Promise<Response> {
     const url = req.url || '';
     if (url.includes('/metrics-json')) {
       return Response.json(store.getMetrics());