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Practice Zone • NodeJS
6 Topics 120 Questions All Difficulty
Topics
All Questions Full list for NodeJS 120 Async & Event Loop Practice Async & Event Loop with real questions. 20 CLI Tools & Debugging Practice CLI Tools & Debugging with real questions. 20 File System & Paths Practice File System & Paths with real questions. 20 HTTP & APIs Practice HTTP & APIs with real questions. 20 Node Basics & Modules Practice Node Basics & Modules with real questions. 20 Streams & Buffers Practice Streams & Buffers with real questions. 20
Questions
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Hello Meetcode CLI
Easy
Jan 25, 2026
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Read ENV Variable
Easy
Jan 25, 2026
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Parse Command Line Args
Medium
Jan 25, 2026
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Export And Require Module
Medium
Jan 25, 2026
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CommonJS vs ESM Hint
Medium
Jan 25, 2026
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Resolve Current File Path
Easy
Jan 25, 2026
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Safe JSON Parse
Hard
Jan 25, 2026
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Timing A Function
Medium
Jan 25, 2026
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Process Exit Codes
Easy
Jan 25, 2026
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Simple Logger Function
Easy
Jan 25, 2026
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Read Text File
Medium
Jan 25, 2026
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Write File Safely
Hard
Jan 25, 2026
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Append Log Lines
Easy
Jan 25, 2026
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List Directory Files
Hard
Jan 25, 2026
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Path Normalize
Medium
Jan 25, 2026
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File Stats Size
Medium
Jan 25, 2026
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Copy File
Hard
Jan 25, 2026
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Delete File If Exists
Easy
Jan 25, 2026
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Read JSON Config
Medium
Jan 25, 2026
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Atomic Save Pattern
Hard
Jan 25, 2026
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EventEmitter Counter
Medium
Jan 25, 2026
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Promise Chain Order
Hard
Jan 25, 2026
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Async/Await Try Catch
Medium
Jan 25, 2026
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Parallel Promises
Medium
Jan 25, 2026
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Timeout With Promise.race
Hard
Jan 25, 2026
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Retry With Backoff
Hard
Jan 25, 2026
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Queue Tasks One By One
Medium
Jan 25, 2026
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AbortController With Fetch
Hard
Jan 25, 2026
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Event Loop Starvation
Hard
Jan 25, 2026
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Custom Delay Function
Easy
Jan 25, 2026
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Basic HTTP Server
Medium
Jan 25, 2026
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Parse URL Query
Medium
Jan 25, 2026
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Routing Without Framework
Hard
Jan 25, 2026
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Read JSON Body
Hard
Jan 25, 2026
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CORS Headers
Medium
Jan 25, 2026
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Set Cookie Header
Medium
Jan 25, 2026
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Static File Server
Hard
Jan 25, 2026
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Request Timeout
Easy
Jan 25, 2026
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URL Builder Function
Easy
Jan 25, 2026
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Handle Large JSON Response
Medium
Jan 25, 2026
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Buffer From String
Easy
Jan 25, 2026
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Hex To Buffer
Medium
Jan 25, 2026
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Stream Copy File
Hard
Jan 25, 2026
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Readable Stream Line Counter
Hard
Jan 25, 2026
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Transform Uppercase Stream
Medium
Jan 25, 2026
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Backpressure Idea Demo
Hard
Jan 25, 2026
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JSON Lines Writer
Medium
Jan 25, 2026
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Gzip Compress Text
Hard
Jan 25, 2026
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Decode Base64
Easy
Jan 25, 2026
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Chunked JSON Parse Problem
Hard
Jan 25, 2026
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Basic CLI Calculator
Medium
Jan 25, 2026
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Pretty Print Errors
Medium
Jan 25, 2026
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Color Output Without Library
Hard
Jan 25, 2026
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Progress Bar Idea
Hard
Jan 25, 2026
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Spawn Child Process
Hard
Jan 25, 2026
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Read From Stdin Lines
Easy
Jan 25, 2026
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Simple Config File Locator
Medium
Jan 25, 2026
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Debug Flag Switch
Easy
Jan 25, 2026
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Graceful SIGINT
Hard
Jan 25, 2026
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Simple Worker Thread
Hard
Jan 25, 2026
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Cluster Basics Explanation
Medium
Jan 25, 2026
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Require Cache Singleton
Medium
Jan 25, 2026
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Safe Number From String
Easy
Jan 25, 2026
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Random ID Generator
Easy
Jan 25, 2026
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Merge Defaults With User Config
Medium
Jan 25, 2026
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Use assert For Quick Check
Medium
Jan 25, 2026
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Measure Memory Usage
Easy
Jan 25, 2026
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queueMicrotask Demo
Hard
Jan 25, 2026
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File URL Conversion
Hard
Jan 25, 2026
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Simple In-Memory Cache
Medium
Jan 25, 2026
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Unhandled Rejection Handler
Hard
Jan 25, 2026
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fs.promises ReadFile
Medium
Jan 25, 2026
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Create File If Missing
Easy
Jan 25, 2026
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Rename File
Medium
Jan 25, 2026
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Watch File Changes
Hard
Jan 25, 2026
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Read Large File Line By Line
Hard
Jan 25, 2026
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Recursive Folder Size
Hard
Jan 25, 2026
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Temporary File Path
Easy
Jan 25, 2026
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Compare Two Files By Hash
Hard
Jan 25, 2026
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Resolve User Home Path
Easy
Jan 25, 2026
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nextTick vs setImmediate
Hard
Jan 25, 2026
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EventEmitter once()
Medium
Jan 25, 2026
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Promisify Callback API
Medium
Jan 25, 2026
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Concurrency Limit Pool
Hard
Jan 25, 2026
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Async Generator Basics
Hard
Jan 25, 2026
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Debounce Function
Medium
Jan 25, 2026
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Stop Interval After N
Easy
Jan 25, 2026
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Handle SIGTERM Async Cleanup
Hard
Jan 25, 2026
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Task Queue With setImmediate
Hard
Jan 25, 2026
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Microtask With Promise.resolve
Easy
Jan 25, 2026
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HTTP Client GET https
Hard
Jan 25, 2026
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Fetch With Timeout
Hard
Jan 25, 2026
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Parse Cookies Header
Medium
Jan 25, 2026
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Basic Auth Header
Easy
Jan 25, 2026
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In-Memory Rate Limiter
Hard
Jan 25, 2026
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Handle Redirect Response
Medium
Jan 25, 2026
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Parse Form Urlencoded
Medium
Jan 25, 2026
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Keep-Alive Agent
Easy
Jan 25, 2026
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Send JSON With Status
Hard
Jan 25, 2026
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SHA256 Of Stdin Stream
Hard
Jan 25, 2026
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