NodeJS Program to Resolve User Home Path with Explanation
NodeJS
Easy
File System & Paths
39 views
1 min read
86 words
This problem helps you practice core NodeJS fundamentals in a practical way. It builds intuition around user, home, path. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Join a filename into the user home directory and print it.
Input Format
stdin: filename.
Output Format
Print resolved path.
Constraints
Use os.homedir.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
const fs = require('fs');
const os = require('os');
const path = require('path');
const name = fs.readFileSync(0, 'utf8').trim();
if (!name) process.exit(0);
console.log(path.join(os.homedir(), name));
Output Example
Output:
C:\\\\Users\\\\...\\\\meetcode.txt
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Join a filename into the user home directory and print it.
Input / Output
Output
Print resolved path.
Constraints
Use os.homedir.
Examples
Output:
C:\\\\Users\\\\...\\\\meetcode.txt
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
const fs = require('fs');
const os = require('os');
const path = require('path');
const name = fs.readFileSync(0, 'utf8').trim();
if (!name) process.exit(0);
console.log(path.join(os.homedir(), name));
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