[{"_1":2,"_310":-5,"_311":-5},"loaderData",{"_3":4,"_22":23,"_24":25,"_254":255},"root",{"_5":6,"_7":8},"toasts",[],"visitor",{"_9":10,"_11":12},"viewportWidth",1280,"visitorSession",{"_13":14,"_16":17,"_18":-5,"_19":20,"_21":-5},"attributes",[15],"BOT","id",7058884,"membership","referenceId","01971406-43e3-74e8-b880-2f000258007a","userAccount","routes/_public/_layout",{},"routes/_public/mcp/servers/~namespace/~slug/_pages/_layout",{"_26":27,"_68":-5,"_69":28,"_29":70,"_171":172,"_253":118},"availableLocales",[28,40,47,54,61],{"_29":30,"_33":37,"_38":39},"mcpServer",{"_31":32,"_33":34,"_35":36},"description","Allows Claude to directly debug a NodeJS server by setting breakpoints, inspecting variables and stepping through code.","name","MCP NodeJS Debugger","readme","# MCP Node.js Debugger\n\nAn MCP server that gives Cursor or Claude Code access to Node.js at runtime to help you debug: [`@hyperdrive-eng/mcp-nodejs-debugger`](https://www.npmjs.com/package/@hyperdrive-eng/mcp-nodejs-debugger).\n\n## Demo\n\n### Cursor\n\nhttps://github.com/user-attachments/assets/c193a17e-b0e6-4c51-82aa-7f3f0de17e1a\n\n### Claude Code\n\nhttps://github.com/user-attachments/assets/adb7321b-3a6a-459b-a5c9-df365710d4d8\n\n## Quick start\n\n### Cursor\n\n1. Add to Cursor (`~/.cursor/mcp.json`)\n\n ![image](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n1. Run a Node.js server in [debug mode](https://nodejs.org/en/learn/getting-started/debugging) (i.e. with the `--inspect` flat)\n\n ```sh\n node --inspect {file.js}\n ```\n \n1. Ask Cursor to debug your Node.js server at runtime\n\n ![image](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n### Claude Code\n\n1. Add to Claude Code\n\n ```sh\n claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger\n ```\n\n1. Start Claude Code\n\n ```sh\n claude\n ╭───────────────────────────────────────────────────────╮\n │ ✻ Welcome to Claude Code research preview! │\n │ │\n │ /help for help │\n │ │\n │ Found 1 MCP server (use /mcp for status) │\n ╰───────────────────────────────────────────────────────╯\n ```\n\n2. Run a Node.js server in [debug mode](https://nodejs.org/en/learn/getting-started/debugging) (i.e. with the `--inspect` flat)\n\n ```sh\n # In another terminal\n node --inspect {file.js}\n ```\n\n3. Ask Claude Code to debug your Node.js server at runtime\n\n ```sh\n > I'm getting a runtime error in Node.js \n\n {YOUR_RUNTIME_ERROR}\n \n Please help me debug this error at runtime using the nodejs-debugger mcp.\n ```\n \n## Usage\n\n### Claude Code\n\n1. Add to Claude Code\n\n ```sh\n claude mcp add nodejs-debugger npx mcp-nodejs-debugger\n ```\n\n1. Verify connection\n\n ```sh\n > /mcp\n ⎿ MCP Server Status\n\n • nodejs-debugger: connected\n ```\n\n1. Remove from Claude Code\n\n ```sh\n claude remove nodejs-debugger\n ```\n\n### Cursor\n\n1. Add to Cursor (`~/.cursor/mcp.json`)\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n1. Verify connection:\n\n ![image](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n1. Remove from Cursor (`~/.cursor/mcp.json`):\n\n ```diff\n - {\n - \"mcpServers\": {\n - \"nodejs-debugger\": {\n - \"command\": \"npx\",\n - \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n - }\n - }\n - }\n ```\n\n## Example\n\n### Cursor\n\n1. Run this simple Node.js app: [github.com/mdn/express-locallibrary-tutorial](https://github.com/mdn/express-locallibrary-tutorial):\n\n ```sh\n node --inspect ./bin/www\n ```\n\n1. Ask Cursor to set a breakpoint\n\n ![image](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n ![image](https://github.com/user-attachments/assets/d24b3423-b7c3-4268-ab86-732371aa047c)\n\n2. Create a book at [`localhost:3000/catalog/book/create`](http://localhost:3000/catalog/book/create)\n\n ![image](https://github.com/user-attachments/assets/165cb026-7767-417d-a52e-2423e5e5728e)\n\n1. Watch Cursor capture runtime state\n\n ![image](https://github.com/user-attachments/assets/a7204504-7441-4592-9758-0397086ba724)\n\n### Claude Code\n\n1. Here is a buggy Node.js server:\n\n ```\n node --inspect index.js\n \n Debugger listening on ws://127.0.0.1:9229/2862f5a2-8618-4516-8429-1248b397e9b4\n \n #######################\n ## THE RUNTIME ERROR ##\n #######################\n MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://www.mongodb.com/docs/atlas/security-whitelist/\n at _handleConnectionErrors (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1110:11)\n at NativeConnection.openUri (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1041:11)\n at async main (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js:35:3) {\n reason: TopologyDescription {\n type: 'ReplicaSetNoPrimary',\n servers: Map(3) {\n 'ac-8e6hgk7-shard-00-01.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-02.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-00.cojoign.mongodb.net:27017' => [ServerDescription]\n },\n stale: false,\n compatible: true,\n heartbeatFrequencyMS: 10000,\n localThresholdMS: 15,\n setName: 'atlas-5syy8t-shard-0',\n maxElectionId: null,\n maxSetVersion: null,\n commonWireVersion: 0,\n logicalSessionTimeoutMinutes: null\n },\n code: undefined\n }\n ```\n\n1. Claude Code debugs the Node.js server at runtime:\n\n ```sh \n > I'm getting a runtime error connecting to mongoose. Please help me debug by checking the value of \n the mongodb configs at runtime using the nodejs-debugger mcp.\n\n ⏺ I'll help you debug the mongoose connection issue using the Node.js debugger. Let's first understand where the\n MongoDB connection is configured.\n \n ⏺ Search(pattern: \"**/*.js\")…\n ⎿ Found 100 files\n \n ⏺ Let's set a breakpoint at the mongoose connection point and continue:\n \n ⏺ nodejs-debugger:set_breakpoint (MCP)(file: …\n \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n line: 35)\n ⎿ Breakpoint set successfully. ID:\n 2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\.js\n \n ⏺ Let's list all our breakpoints:\n \n ⏺ nodejs-debugger:list_breakpoints (MCP)\n ⎿ [\n {\n \"file\": \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n \"line\": 35,\n \"id\": \"2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\\\.js\"\n }\n ]\n \n ⏺ Let's try to execute a specific piece of code to check the connection variables:\n \n ⏺ nodejs-debugger:nodejs_inspect (MCP)(js_code: \"// Get the mongoose module and inspect connection\\nconst mongoose = …\n require('mongoose');\\nconsole.log('Current mongoose version:',\n mongoose.version);\\nconsole.log('Current mongoose connection state:',\n mongoose.connection.readyState);\\n// Log connection string safely (without\n password)\\nconst connectionString = process.env.MONGODB_URI || \\n\n \\\"mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWr\n ites=true&w=majority&appName=Cluster0\\\";\\nconsole.log('Connection string\n (masked):', connectionString.replace(/(?<=mongodb\\\\+srv:\\\\/\\\\/\\\\w+:)(.+?)(?=@)/,\n '*****'));\")\n \n ⎿ Console output:\n [log] Current mongoose version: 8.9.5\n [log] Current mongoose connection state: 0\n [log] Connection string (masked): mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWri\n tes=true&w=majority&appName=Cluster0\n\n ⏺ The runtime error you're seeing in your application is related to MongoDB\n Atlas connection issues. Based on your error message, the problem is:\n \n 1. You're using placeholder credentials (\"cooluser:coolpassword\")\n \n To fix this, you have two options:\n \n 1. Use a local MongoDB instance by changing line 29-30 in app.js to:\n const dev_db_url = \"mongodb://127.0.0.1:27017/local_library\";\n 2. Or correctly set up MongoDB Atlas:\n - Log into Atlas at https://cloud.mongodb.com\n - Go to Network Access and add your current IP to whitelist\n - Create proper database credentials\n - Update the connection string with real credentials\n \n Which option would you like to proceed with?\n ```\n","English","tag","en-US",{"_29":41,"_33":45,"_38":46},{"_31":42,"_33":43,"_35":44},"Permite a Claude depurar directamente un servidor NodeJS estableciendo puntos de interrupción, inspeccionando variables y recorriendo el código.","Depurador MCP NodeJS","# Depurador MCP Node.js\n\nUn servidor MCP que brinda a Cursor o Claude Code acceso a Node.js en tiempo de ejecución para ayudarlo a depurar: [`@hyperdrive-eng/mcp-nodejs-debugger`](https://www.npmjs.com/package/@hyperdrive-eng/mcp-nodejs-debugger) .\n\n## Manifestación\n\n### Cursor\n\n\n\n### Claude Code\n\n\n\n## Inicio rápido\n\n### Cursor\n\n1. Agregar al cursor ( `~/.cursor/mcp.json` )\n\n ![imagen](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. Ejecute un servidor Node.js en [modo de depuración](https://nodejs.org/en/learn/getting-started/debugging) (es decir, con `--inspect` flat)\n\n ```sh\n node --inspect {file.js}\n ```\n\n3. Pídale a Cursor que depure su servidor Node.js en tiempo de ejecución\n\n ![imagen](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n### Claude Code\n\n1. Añadir a Claude Code\n\n ```sh\n claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger\n ```\n\n2. Iniciar Claude Code\n\n ```sh\n claude\n ╭───────────────────────────────────────────────────────╮\n │ ✻ Welcome to Claude Code research preview! │\n │ │\n │ /help for help │\n │ │\n │ Found 1 MCP server (use /mcp for status) │\n ╰───────────────────────────────────────────────────────╯\n ```\n\n3. Ejecute un servidor Node.js en [modo de depuración](https://nodejs.org/en/learn/getting-started/debugging) (es decir, con `--inspect` flat)\n\n ```sh\n # In another terminal\n node --inspect {file.js}\n ```\n\n4. Pídale a Claude Code que depure su servidor Node.js en tiempo de ejecución\n\n ```sh\n > I'm getting a runtime error in Node.js \n\n {YOUR_RUNTIME_ERROR}\n \n Please help me debug this error at runtime using the nodejs-debugger mcp.\n ```\n\n## Uso\n\n### Claude Code\n\n1. Añadir a Claude Code\n\n ```sh\n claude mcp add nodejs-debugger npx mcp-nodejs-debugger\n ```\n\n2. Verificar la conexión\n\n ```sh\n > /mcp\n ⎿ MCP Server Status\n\n • nodejs-debugger: connected\n ```\n\n3. Eliminar de Claude Code\n\n ```sh\n claude remove nodejs-debugger\n ```\n\n### Cursor\n\n1. Agregar al cursor ( `~/.cursor/mcp.json` )\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. Verificar conexión:\n\n ![imagen](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n3. Eliminar del cursor ( `~/.cursor/mcp.json` ):\n\n ```diff\n - {\n - \"mcpServers\": {\n - \"nodejs-debugger\": {\n - \"command\": \"npx\",\n - \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n - }\n - }\n - }\n ```\n\n## Ejemplo\n\n### Cursor\n\n1. Ejecute esta sencilla aplicación Node.js: [github.com/mdn/express-locallibrary-tutorial](https://github.com/mdn/express-locallibrary-tutorial) :\n\n ```sh\n node --inspect ./bin/www\n ```\n\n2. Pedirle a Cursor que establezca un punto de interrupción\n\n ![imagen](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n ![imagen](https://github.com/user-attachments/assets/d24b3423-b7c3-4268-ab86-732371aa047c)\n\n3. Crea un libro en [`localhost:3000/catalog/book/create`](http://localhost:3000/catalog/book/create)\n\n ![imagen](https://github.com/user-attachments/assets/165cb026-7767-417d-a52e-2423e5e5728e)\n\n4. Observar el estado de ejecución de la captura del cursor\n\n ![imagen](https://github.com/user-attachments/assets/a7204504-7441-4592-9758-0397086ba724)\n\n### Claude Code\n\n1. Aquí hay un servidor Node.js con errores:\n\n ```\n node --inspect index.js\n\n Debugger listening on ws://127.0.0.1:9229/2862f5a2-8618-4516-8429-1248b397e9b4\n\n #######################\n ## THE RUNTIME ERROR ##\n #######################\n MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://www.mongodb.com/docs/atlas/security-whitelist/\n at _handleConnectionErrors (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1110:11)\n at NativeConnection.openUri (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1041:11)\n at async main (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js:35:3) {\n reason: TopologyDescription {\n type: 'ReplicaSetNoPrimary',\n servers: Map(3) {\n 'ac-8e6hgk7-shard-00-01.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-02.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-00.cojoign.mongodb.net:27017' => [ServerDescription]\n },\n stale: false,\n compatible: true,\n heartbeatFrequencyMS: 10000,\n localThresholdMS: 15,\n setName: 'atlas-5syy8t-shard-0',\n maxElectionId: null,\n maxSetVersion: null,\n commonWireVersion: 0,\n logicalSessionTimeoutMinutes: null\n },\n code: undefined\n }\n ```\n\n2. Claude Code depura el servidor Node.js en tiempo de ejecución:\n\n ```sh\n > I'm getting a runtime error connecting to mongoose. Please help me debug by checking the value of \n the mongodb configs at runtime using the nodejs-debugger mcp.\n\n ⏺ I'll help you debug the mongoose connection issue using the Node.js debugger. Let's first understand where the\n MongoDB connection is configured.\n\n ⏺ Search(pattern: \"**/*.js\")…\n ⎿ Found 100 files\n\n ⏺ Let's set a breakpoint at the mongoose connection point and continue:\n\n ⏺ nodejs-debugger:set_breakpoint (MCP)(file: …\n \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n line: 35)\n ⎿ Breakpoint set successfully. ID:\n 2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\.js\n \n ⏺ Let's list all our breakpoints:\n \n ⏺ nodejs-debugger:list_breakpoints (MCP)\n ⎿ [\n {\n \"file\": \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n \"line\": 35,\n \"id\": \"2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\\\.js\"\n }\n ]\n \n ⏺ Let's try to execute a specific piece of code to check the connection variables:\n\n ⏺ nodejs-debugger:nodejs_inspect (MCP)(js_code: \"// Get the mongoose module and inspect connection\\nconst mongoose = …\n require('mongoose');\\nconsole.log('Current mongoose version:',\n mongoose.version);\\nconsole.log('Current mongoose connection state:',\n mongoose.connection.readyState);\\n// Log connection string safely (without\n password)\\nconst connectionString = process.env.MONGODB_URI || \\n\n \\\"mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWr\n ites=true&w=majority&appName=Cluster0\\\";\\nconsole.log('Connection string\n (masked):', connectionString.replace(/(?<=mongodb\\\\+srv:\\\\/\\\\/\\\\w+:)(.+?)(?=@)/,\n '*****'));\")\n \n ⎿ Console output:\n [log] Current mongoose version: 8.9.5\n [log] Current mongoose connection state: 0\n [log] Connection string (masked): mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWri\n tes=true&w=majority&appName=Cluster0\n\n ⏺ The runtime error you're seeing in your application is related to MongoDB\n Atlas connection issues. Based on your error message, the problem is:\n \n 1. You're using placeholder credentials (\"cooluser:coolpassword\")\n \n To fix this, you have two options:\n \n 1. Use a local MongoDB instance by changing line 29-30 in app.js to:\n const dev_db_url = \"mongodb://127.0.0.1:27017/local_library\";\n 2. Or correctly set up MongoDB Atlas:\n - Log into Atlas at https://cloud.mongodb.com\n - Go to Network Access and add your current IP to whitelist\n - Create proper database credentials\n - Update the connection string with real credentials\n \n Which option would you like to proceed with?\n ```","Spanish","es-ES",{"_29":48,"_33":52,"_38":53},{"_31":49,"_33":50,"_35":51},"ブレークポイントを設定し、変数を検査し、コードをステップ実行することで、Claude が NodeJS サーバーを直接デバッグできるようにします。","MCP NodeJS デバッガー","# MCP Node.js デバッガー\n\n実行時に Cursor または Claude Code に Node.js へのアクセスを提供し、デバッグを支援する MCP サーバー: [`@hyperdrive-eng/mcp-nodejs-debugger`](https://www.npmjs.com/package/@hyperdrive-eng/mcp-nodejs-debugger) 。\n\n## デモ\n\n### カーソル\n\n\n\n### クロード・コード\n\n\n\n## クイックスタート\n\n### カーソル\n\n1. カーソルに追加 ( `~/.cursor/mcp.json` )\n\n ![画像](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. Node.js サーバーを[デバッグモード](https://nodejs.org/en/learn/getting-started/debugging)で実行する (つまり、 `--inspect` flat を使用する)\n\n ```sh\n node --inspect {file.js}\n ```\n\n3. 実行時に Node.js サーバーをデバッグするには Cursor を使用します。\n\n ![画像](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n### クロード・コード\n\n1. クロード・コードに追加\n\n ```sh\n claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger\n ```\n\n2. クロードコードを開始\n\n ```sh\n claude\n ╭───────────────────────────────────────────────────────╮\n │ ✻ Welcome to Claude Code research preview! │\n │ │\n │ /help for help │\n │ │\n │ Found 1 MCP server (use /mcp for status) │\n ╰───────────────────────────────────────────────────────╯\n ```\n\n3. Node.js サーバーを[デバッグモード](https://nodejs.org/en/learn/getting-started/debugging)で実行する (つまり、 `--inspect` flat を使用する)\n\n ```sh\n # In another terminal\n node --inspect {file.js}\n ```\n\n4. Claude CodeにNode.jsサーバーの実行時のデバッグを依頼する\n\n ```sh\n > I'm getting a runtime error in Node.js \n\n {YOUR_RUNTIME_ERROR}\n \n Please help me debug this error at runtime using the nodejs-debugger mcp.\n ```\n\n## 使用法\n\n### クロード・コード\n\n1. クロード・コードに追加\n\n ```sh\n claude mcp add nodejs-debugger npx mcp-nodejs-debugger\n ```\n\n2. 接続を確認する\n\n ```sh\n > /mcp\n ⎿ MCP Server Status\n\n • nodejs-debugger: connected\n ```\n\n3. クロードコードから削除\n\n ```sh\n claude remove nodejs-debugger\n ```\n\n### カーソル\n\n1. カーソルに追加 ( `~/.cursor/mcp.json` )\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. 接続を確認します:\n\n ![画像](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n3. カーソルから削除 ( `~/.cursor/mcp.json` ):\n\n ```diff\n - {\n - \"mcpServers\": {\n - \"nodejs-debugger\": {\n - \"command\": \"npx\",\n - \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n - }\n - }\n - }\n ```\n\n## 例\n\n### カーソル\n\n1. このシンプルな Node.js アプリを実行します: [github.com/mdn/express-locallibrary-tutorial](https://github.com/mdn/express-locallibrary-tutorial) :\n\n ```sh\n node --inspect ./bin/www\n ```\n\n2. カーソルにブレークポイントを設定するように要求する\n\n ![画像](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n ![画像](https://github.com/user-attachments/assets/d24b3423-b7c3-4268-ab86-732371aa047c)\n\n3. [`localhost:3000/catalog/book/create`](http://localhost:3000/catalog/book/create)にブックを作成します。\n\n ![画像](https://github.com/user-attachments/assets/165cb026-7767-417d-a52e-2423e5e5728e)\n\n4. ウォッチカーソルがランタイム状態をキャプチャする\n\n ![画像](https://github.com/user-attachments/assets/a7204504-7441-4592-9758-0397086ba724)\n\n### クロード・コード\n\n1. バグのある Node.js サーバーは次のとおりです。\n\n ```\n node --inspect index.js\n\n Debugger listening on ws://127.0.0.1:9229/2862f5a2-8618-4516-8429-1248b397e9b4\n\n #######################\n ## THE RUNTIME ERROR ##\n #######################\n MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://www.mongodb.com/docs/atlas/security-whitelist/\n at _handleConnectionErrors (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1110:11)\n at NativeConnection.openUri (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1041:11)\n at async main (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js:35:3) {\n reason: TopologyDescription {\n type: 'ReplicaSetNoPrimary',\n servers: Map(3) {\n 'ac-8e6hgk7-shard-00-01.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-02.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-00.cojoign.mongodb.net:27017' => [ServerDescription]\n },\n stale: false,\n compatible: true,\n heartbeatFrequencyMS: 10000,\n localThresholdMS: 15,\n setName: 'atlas-5syy8t-shard-0',\n maxElectionId: null,\n maxSetVersion: null,\n commonWireVersion: 0,\n logicalSessionTimeoutMinutes: null\n },\n code: undefined\n }\n ```\n\n2. Claude Code は実行時に Node.js サーバーをデバッグします。\n\n ```sh\n > I'm getting a runtime error connecting to mongoose. Please help me debug by checking the value of \n the mongodb configs at runtime using the nodejs-debugger mcp.\n\n ⏺ I'll help you debug the mongoose connection issue using the Node.js debugger. Let's first understand where the\n MongoDB connection is configured.\n\n ⏺ Search(pattern: \"**/*.js\")…\n ⎿ Found 100 files\n\n ⏺ Let's set a breakpoint at the mongoose connection point and continue:\n\n ⏺ nodejs-debugger:set_breakpoint (MCP)(file: …\n \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n line: 35)\n ⎿ Breakpoint set successfully. ID:\n 2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\.js\n \n ⏺ Let's list all our breakpoints:\n \n ⏺ nodejs-debugger:list_breakpoints (MCP)\n ⎿ [\n {\n \"file\": \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n \"line\": 35,\n \"id\": \"2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\\\.js\"\n }\n ]\n \n ⏺ Let's try to execute a specific piece of code to check the connection variables:\n\n ⏺ nodejs-debugger:nodejs_inspect (MCP)(js_code: \"// Get the mongoose module and inspect connection\\nconst mongoose = …\n require('mongoose');\\nconsole.log('Current mongoose version:',\n mongoose.version);\\nconsole.log('Current mongoose connection state:',\n mongoose.connection.readyState);\\n// Log connection string safely (without\n password)\\nconst connectionString = process.env.MONGODB_URI || \\n\n \\\"mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWr\n ites=true&w=majority&appName=Cluster0\\\";\\nconsole.log('Connection string\n (masked):', connectionString.replace(/(?<=mongodb\\\\+srv:\\\\/\\\\/\\\\w+:)(.+?)(?=@)/,\n '*****'));\")\n \n ⎿ Console output:\n [log] Current mongoose version: 8.9.5\n [log] Current mongoose connection state: 0\n [log] Connection string (masked): mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWri\n tes=true&w=majority&appName=Cluster0\n\n ⏺ The runtime error you're seeing in your application is related to MongoDB\n Atlas connection issues. Based on your error message, the problem is:\n \n 1. You're using placeholder credentials (\"cooluser:coolpassword\")\n \n To fix this, you have two options:\n \n 1. Use a local MongoDB instance by changing line 29-30 in app.js to:\n const dev_db_url = \"mongodb://127.0.0.1:27017/local_library\";\n 2. Or correctly set up MongoDB Atlas:\n - Log into Atlas at https://cloud.mongodb.com\n - Go to Network Access and add your current IP to whitelist\n - Create proper database credentials\n - Update the connection string with real credentials\n \n Which option would you like to proceed with?\n ```","Japanese","ja-JP",{"_29":55,"_33":59,"_38":60},{"_31":56,"_33":57,"_35":58},"Claude가 중단점을 설정하고, 변수를 검사하고, 코드를 단계별로 실행하여 NodeJS 서버를 직접 디버깅할 수 있도록 해줍니다.","MCP NodeJS 디버거","# MCP Node.js 디버거\n\n디버깅을 돕기 위해 Cursor 또는 Claude Code가 런타임에 Node.js에 액세스할 수 있도록 하는 MCP 서버: [`@hyperdrive-eng/mcp-nodejs-debugger`](https://www.npmjs.com/package/@hyperdrive-eng/mcp-nodejs-debugger) .\n\n## 데모\n\n### 커서\n\n\n\n### 클로드 코드\n\n\n\n## 빠른 시작\n\n### 커서\n\n1. 커서에 추가( `~/.cursor/mcp.json` )\n\n ![영상](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n 지엑스피1\n\n2. [디버그 모드](https://nodejs.org/en/learn/getting-started/debugging) 에서 Node.js 서버를 실행합니다(예: `--inspect` flat 사용)\n\n ```sh\n node --inspect {file.js}\n ```\n\n3. 런타임에 Node.js 서버를 디버깅하도록 Cursor에 요청합니다.\n\n ![영상](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n### 클로드 코드\n\n1. 클로드 코드에 추가\n\n ```sh\n claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger\n ```\n\n2. 클로드 코드 시작\n\n ```sh\n claude\n ╭───────────────────────────────────────────────────────��\n │ ✻ Welcome to Claude Code research preview! │\n │ │\n │ /help for help │\n │ │\n │ Found 1 MCP server (use /mcp for status) │\n ╰───────────────────────────────────────────────────────╯\n ```\n\n3. [디버그 모드](https://nodejs.org/en/learn/getting-started/debugging) 에서 Node.js 서버를 실행합니다(예: `--inspect` flat 사용)\n\n ```sh\n # In another terminal\n node --inspect {file.js}\n ```\n\n4. Claude Code에게 런타임에 Node.js 서버를 디버깅하도록 요청하세요.\n\n ```sh\n > I'm getting a runtime error in Node.js \n\n {YOUR_RUNTIME_ERROR}\n \n Please help me debug this error at runtime using the nodejs-debugger mcp.\n ```\n\n## 용법\n\n### 클로드 코드\n\n1. 클로드 코드에 추가\n\n ```sh\n claude mcp add nodejs-debugger npx mcp-nodejs-debugger\n ```\n\n2. 연결 확인\n\n ```sh\n > /mcp\n ⎿ MCP Server Status\n\n • nodejs-debugger: connected\n ```\n\n3. Claude Code에서 제거\n\n ```sh\n claude remove nodejs-debugger\n ```\n\n### 커서\n\n1. 커서에 추가( `~/.cursor/mcp.json` )\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. 연결 확인:\n\n ![영상](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n3. 커서에서 제거( `~/.cursor/mcp.json` ):\n\n ```diff\n - {\n - \"mcpServers\": {\n - \"nodejs-debugger\": {\n - \"command\": \"npx\",\n - \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n - }\n - }\n - }\n ```\n\n## 예\n\n### 커서\n\n1. 이 간단한 Node.js 앱을 실행해 보세요: [github.com/mdn/express-locallibrary-tutorial](https://github.com/mdn/express-locallibrary-tutorial) :\n\n ```sh\n node --inspect ./bin/www\n ```\n\n2. 커서에 중단점을 설정하도록 요청합니다.\n\n ![영상](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n ![영상](https://github.com/user-attachments/assets/d24b3423-b7c3-4268-ab86-732371aa047c)\n\n3. [`localhost:3000/catalog/book/create`](http://localhost:3000/catalog/book/create) 에서 책을 만드세요\n\n ![영상](https://github.com/user-attachments/assets/165cb026-7767-417d-a52e-2423e5e5728e)\n\n4. 커서 캡처 런타임 상태를 확인하세요\n\n ![영상](https://github.com/user-attachments/assets/a7204504-7441-4592-9758-0397086ba724)\n\n### 클로드 코드\n\n1. 버그가 있는 Node.js 서버는 다음과 같습니다.\n\n ```\n node --inspect index.js\n\n Debugger listening on ws://127.0.0.1:9229/2862f5a2-8618-4516-8429-1248b397e9b4\n\n #######################\n ## THE RUNTIME ERROR ##\n #######################\n MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://www.mongodb.com/docs/atlas/security-whitelist/\n at _handleConnectionErrors (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1110:11)\n at NativeConnection.openUri (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1041:11)\n at async main (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js:35:3) {\n reason: TopologyDescription {\n type: 'ReplicaSetNoPrimary',\n servers: Map(3) {\n 'ac-8e6hgk7-shard-00-01.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-02.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-00.cojoign.mongodb.net:27017' => [ServerDescription]\n },\n stale: false,\n compatible: true,\n heartbeatFrequencyMS: 10000,\n localThresholdMS: 15,\n setName: 'atlas-5syy8t-shard-0',\n maxElectionId: null,\n maxSetVersion: null,\n commonWireVersion: 0,\n logicalSessionTimeoutMinutes: null\n },\n code: undefined\n }\n ```\n\n2. Claude Code는 런타임에 Node.js 서버를 디버깅합니다.\n\n ```sh\n > I'm getting a runtime error connecting to mongoose. Please help me debug by checking the value of \n the mongodb configs at runtime using the nodejs-debugger mcp.\n\n ⏺ I'll help you debug the mongoose connection issue using the Node.js debugger. Let's first understand where the\n MongoDB connection is configured.\n\n ⏺ Search(pattern: \"**/*.js\")…\n ⎿ Found 100 files\n\n ⏺ Let's set a breakpoint at the mongoose connection point and continue:\n\n ⏺ nodejs-debugger:set_breakpoint (MCP)(file: …\n \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n line: 35)\n ⎿ Breakpoint set successfully. ID:\n 2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\.js\n \n ⏺ Let's list all our breakpoints:\n \n ⏺ nodejs-debugger:list_breakpoints (MCP)\n ⎿ [\n {\n \"file\": \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n \"line\": 35,\n \"id\": \"2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\\\.js\"\n }\n ]\n \n ⏺ Let's try to execute a specific piece of code to check the connection variables:\n\n ⏺ nodejs-debugger:nodejs_inspect (MCP)(js_code: \"// Get the mongoose module and inspect connection\\nconst mongoose = …\n require('mongoose');\\nconsole.log('Current mongoose version:',\n mongoose.version);\\nconsole.log('Current mongoose connection state:',\n mongoose.connection.readyState);\\n// Log connection string safely (without\n password)\\nconst connectionString = process.env.MONGODB_URI || \\n\n \\\"mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWr\n ites=true&w=majority&appName=Cluster0\\\";\\nconsole.log('Connection string\n (masked):', connectionString.replace(/(?<=mongodb\\\\+srv:\\\\/\\\\/\\\\w+:)(.+?)(?=@)/,\n '*****'));\")\n \n ⎿ Console output:\n [log] Current mongoose version: 8.9.5\n [log] Current mongoose connection state: 0\n [log] Connection string (masked): mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWri\n tes=true&w=majority&appName=Cluster0\n\n ⏺ The runtime error you're seeing in your application is related to MongoDB\n Atlas connection issues. Based on your error message, the problem is:\n \n 1. You're using placeholder credentials (\"cooluser:coolpassword\")\n \n To fix this, you have two options:\n \n 1. Use a local MongoDB instance by changing line 29-30 in app.js to:\n const dev_db_url = \"mongodb://127.0.0.1:27017/local_library\";\n 2. Or correctly set up MongoDB Atlas:\n - Log into Atlas at https://cloud.mongodb.com\n - Go to Network Access and add your current IP to whitelist\n - Create proper database credentials\n - Update the connection string with real credentials\n \n Which option would you like to proceed with?\n ```","Korean","ko-KR",{"_29":62,"_33":66,"_38":67},{"_31":63,"_33":64,"_35":65},"允许 Claude 通过设置断点、检查变量和单步执行代码来直接调试 NodeJS 服务器。","MCP NodeJS 调试器","# MCP Node.js 调试器\n\nMCP 服务器允许 Cursor 或 Claude Code 在运行时访问 Node.js 以帮助您调试： [`@hyperdrive-eng/mcp-nodejs-debugger`](https://www.npmjs.com/package/@hyperdrive-eng/mcp-nodejs-debugger) 。\n\n## 演示\n\n### 光标\n\n\n\n### 克劳德·科德\n\n\n\n## 快速启动\n\n### 光标\n\n1. 添加到光标（ `~/.cursor/mcp.json` ）\n\n ![图像](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. 在[调试模式](https://nodejs.org/en/learn/getting-started/debugging)下运行 Node.js 服务器（即使用`--inspect` flat）\n\n ```sh\n node --inspect {file.js}\n ```\n\n3. 让 Cursor 在运行时调试你的 Node.js 服务器\n\n ![图像](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n### 克劳德·科德\n\n1. 添加到克劳德代码\n\n ```sh\n claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger\n ```\n\n2. 启动克劳德代码\n\n ```sh\n claude\n ╭───────────────────────────────────────────────────────╮\n │ ✻ Welcome to Claude Code research preview! │\n │ │\n │ /help for help │\n │ │\n │ Found 1 MCP server (use /mcp for status) │\n ╰───────────────────────────────────────────────────────╯\n ```\n\n3. 在[调试模式](https://nodejs.org/en/learn/getting-started/debugging)下运行 Node.js 服务器（即使用`--inspect` flat）\n\n ```sh\n # In another terminal\n node --inspect {file.js}\n ```\n\n4. 使用 Claude Code 在运行时调试你的 Node.js 服务器\n\n ```sh\n > I'm getting a runtime error in Node.js \n\n {YOUR_RUNTIME_ERROR}\n \n Please help me debug this error at runtime using the nodejs-debugger mcp.\n ```\n\n## 用法\n\n### 克劳德·科德\n\n1. 添加到克劳德代码\n\n ```sh\n claude mcp add nodejs-debugger npx mcp-nodejs-debugger\n ```\n\n2. 验证连接\n\n ```sh\n > /mcp\n ⎿ MCP Server Status\n\n • nodejs-debugger: connected\n ```\n\n3. 从克劳德法典中删除\n\n ```sh\n claude remove nodejs-debugger\n ```\n\n### 光标\n\n1. 添加到光标（ `~/.cursor/mcp.json` ）\n\n ```diff\n + {\n + \"mcpServers\": {\n + \"nodejs-debugger\": {\n + \"command\": \"npx\",\n + \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n + }\n + }\n + }\n ```\n\n2. 验证连接：\n\n ![图像](https://github.com/user-attachments/assets/132092ab-52d9-4790-84bb-9e9702603390)\n\n3. 从 Cursor 中删除（ `~/.cursor/mcp.json` ）：\n\n ```diff\n - {\n - \"mcpServers\": {\n - \"nodejs-debugger\": {\n - \"command\": \"npx\",\n - \"args\": [\"@hyperdrive-eng/mcp-nodejs-debugger\"]\n - }\n - }\n - }\n ```\n\n## 例子\n\n### 光标\n\n1. 运行这个简单的 Node.js 应用程序： [github.com/mdn/express-locallibrary-tutorial](https://github.com/mdn/express-locallibrary-tutorial) ：\n\n ```sh\n node --inspect ./bin/www\n ```\n\n2. 要求 Cursor 设置断点\n\n ![图像](https://github.com/user-attachments/assets/fa85982b-33ce-41df-ac90-58ce6a73c433)\n\n ![图像](https://github.com/user-attachments/assets/d24b3423-b7c3-4268-ab86-732371aa047c)\n\n3. 在[`localhost:3000/catalog/book/create`](http://localhost:3000/catalog/book/create)创建一本书\n\n ![图像](https://github.com/user-attachments/assets/165cb026-7767-417d-a52e-2423e5e5728e)\n\n4. Watch Cursor 捕获运行时状态\n\n ![图像](https://github.com/user-attachments/assets/a7204504-7441-4592-9758-0397086ba724)\n\n### 克劳德·科德\n\n1. 这是一个有缺陷的 Node.js 服务器：\n\n ```\n node --inspect index.js\n\n Debugger listening on ws://127.0.0.1:9229/2862f5a2-8618-4516-8429-1248b397e9b4\n\n #######################\n ## THE RUNTIME ERROR ##\n #######################\n MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://www.mongodb.com/docs/atlas/security-whitelist/\n at _handleConnectionErrors (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1110:11)\n at NativeConnection.openUri (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/node_modules/mongoose/lib/connection.js:1041:11)\n at async main (/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js:35:3) {\n reason: TopologyDescription {\n type: 'ReplicaSetNoPrimary',\n servers: Map(3) {\n 'ac-8e6hgk7-shard-00-01.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-02.cojoign.mongodb.net:27017' => [ServerDescription],\n 'ac-8e6hgk7-shard-00-00.cojoign.mongodb.net:27017' => [ServerDescription]\n },\n stale: false,\n compatible: true,\n heartbeatFrequencyMS: 10000,\n localThresholdMS: 15,\n setName: 'atlas-5syy8t-shard-0',\n maxElectionId: null,\n maxSetVersion: null,\n commonWireVersion: 0,\n logicalSessionTimeoutMinutes: null\n },\n code: undefined\n }\n ```\n\n2. Claude Code 在运行时调试 Node.js 服务器：\n\n ```sh\n > I'm getting a runtime error connecting to mongoose. Please help me debug by checking the value of \n the mongodb configs at runtime using the nodejs-debugger mcp.\n\n ⏺ I'll help you debug the mongoose connection issue using the Node.js debugger. Let's first understand where the\n MongoDB connection is configured.\n\n ⏺ Search(pattern: \"**/*.js\")…\n ⎿ Found 100 files\n\n ⏺ Let's set a breakpoint at the mongoose connection point and continue:\n\n ⏺ nodejs-debugger:set_breakpoint (MCP)(file: …\n \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n line: 35)\n ⎿ Breakpoint set successfully. ID:\n 2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\.js\n \n ⏺ Let's list all our breakpoints:\n \n ⏺ nodejs-debugger:list_breakpoints (MCP)\n ⎿ [\n {\n \"file\": \"/Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app.js\",\n \"line\": 35,\n \"id\": \"2:34:0:file:///Users/arthur/Documents/thirdparties/mdn/express-locallibrary-tutorial/app\\\\.js\"\n }\n ]\n \n ⏺ Let's try to execute a specific piece of code to check the connection variables:\n\n ⏺ nodejs-debugger:nodejs_inspect (MCP)(js_code: \"// Get the mongoose module and inspect connection\\nconst mongoose = …\n require('mongoose');\\nconsole.log('Current mongoose version:',\n mongoose.version);\\nconsole.log('Current mongoose connection state:',\n mongoose.connection.readyState);\\n// Log connection string safely (without\n password)\\nconst connectionString = process.env.MONGODB_URI || \\n\n \\\"mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWr\n ites=true&w=majority&appName=Cluster0\\\";\\nconsole.log('Connection string\n (masked):', connectionString.replace(/(?<=mongodb\\\\+srv:\\\\/\\\\/\\\\w+:)(.+?)(?=@)/,\n '*****'));\")\n \n ⎿ Console output:\n [log] Current mongoose version: 8.9.5\n [log] Current mongoose connection state: 0\n [log] Connection string (masked): mongodb+srv://cooluser:coolpassword@cluster0.cojoign.mongodb.net/local_library?retryWri\n tes=true&w=majority&appName=Cluster0\n\n ⏺ The runtime error you're seeing in your application is related to MongoDB\n Atlas connection issues. Based on your error message, the problem is:\n \n 1. You're using placeholder credentials (\"cooluser:coolpassword\")\n \n To fix this, you have two options:\n \n 1. Use a local MongoDB instance by changing line 29-30 in app.js to:\n const dev_db_url = \"mongodb://127.0.0.1:27017/local_library\";\n 2. Or correctly set up MongoDB Atlas:\n - Log into Atlas at https://cloud.mongodb.com\n - Go to Network Access and add your current IP to whitelist\n - Create proper database credentials\n - Update the connection string with real credentials\n \n Which option would you like to proceed with?\n 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