LeetCode Exporter

Open LeetCode problems in your editor and test/submit solutions from the command line.

Quick Start

npm install -g leetcode-exporter
leetcode-exporter setup

Then load the Chrome extension and register it (see Installation for details).

Features

• One-Click Export: Click extension icon on any LeetCode problem to open it in your editor
• CLI Test & Submit: Run tests and submit solutions without leaving your terminal
• No Browser Required: After opening a problem, work entirely from your editor
• Multiple Languages: JavaScript, TypeScript, Python, Java, C++, C, Go, Rust, and more

Installation

Prerequisites

• Node.js 14 or higher
• Google Chrome browser
• One of: Cursor, VS Code Insiders, or VS Code

Step 1: Install the CLI Tool

npm install -g leetcode-exporter

Step 2: Run Setup

leetcode-exporter setup

This will register the native host and open Chrome's extensions page.

Step 3: Load the Extension

1. In Chrome, enable Developer mode (toggle in top-right)
2. Click Load unpacked
3. Paste the path from clipboard (or navigate to the extension folder)

Step 4: Register Extension

1. Click the extension icon in Chrome toolbar
2. Click "Copy Command"
3. Paste and run in terminal

Usage

Opening Problems

1. Go to any LeetCode problem (e.g., https://leetcode.com/problems/two-sum/)
2. Click the extension icon → "Open in Editor"
3. The problem opens in your editor with the code template and description

Testing Solutions

# Test solution in current directory
leetcode-exporter test

# Test specific problem
leetcode-exporter test ./1-two-sum

Submitting Solutions

# Submit solution in current directory
leetcode-exporter submit

# Submit specific problem
leetcode-exporter submit ./1-two-sum

Example output:

Submitting: /Users/you/leetcode/1-two-sum/solution.py

Problem: two-sum (#1)
Language: python3

Submitting...

✓ Accepted
  Runtime: 52 ms (faster than 85.2%)
  Memory: 15.1 MB (less than 62.3%)
  Tests: 63/63 passed

Configuration

# View current config
leetcode-exporter config

# Change workspace directory
leetcode-exporter config workspaceDir ~/projects/leetcode

# Set preferred editor (auto, cursor, code-insiders, code)
leetcode-exporter config editor cursor

# Enable visual button on LeetCode pages (optional)
leetcode-exporter config showVisualButton true

File Output

Files are saved to ~/leetcode/ in organized directories:

~/leetcode/
├── 1-two-sum/
│   └── solution.js
├── 2-add-two-numbers/
│   └── solution.py
└── 3-longest-substring-without-repeating-characters/
    └── solution.rs

Example file content:

/*
 * Problem: Two Sum
 * Difficulty: Easy
 * URL: https://leetcode.com/problems/two-sum/
 *
 * Description:
 * Given an array of integers nums and an integer target, return indices
 * of the two numbers such that they add up to target...
 */

function twoSum(nums, target) {
  // Your solution here
}

Supported Languages

| Language | Extension | |----------|-----------| | JavaScript | .js | | TypeScript | .ts | | Python | .py | | Java | .java | | C++ | .cpp | | C | .c | | Go | .go | | Rust | .rs | | Ruby | .rb | | Swift | .swift | | Kotlin | .kt |

Uninstall

leetcode-exporter uninstall

Then remove the extension from Chrome.

Troubleshooting

"Not logged in" error when testing/submitting

1. Make sure you're logged in to LeetCode in Chrome
2. Visit any LeetCode problem page (this syncs your session to the CLI)
3. Try the command again

"No editor found" error

1. Make sure you have VS Code, VS Code Insiders, or Cursor installed
2. Ensure your editor's CLI is in PATH:

   which code    # or code-insiders, or cursor

3. Or set your preferred editor: leetcode-exporter config editor cursor

Extension icon doesn't open problem

• Make sure you're on a LeetCode problem page (e.g., /problems/two-sum/)
• Try refreshing the page
• Check that the extension is enabled in chrome://extensions

Native host errors

Re-run the setup:

leetcode-exporter setup

Security & Privacy

• Session-based auth: Uses your existing LeetCode browser session for API calls
• Local storage: Session tokens are stored locally in ~/.leetcode-exporter.json
• No external servers: All communication is between your browser, CLI, and LeetCode
• Minimal permissions: Only accesses leetcode.com pages

Legal Notice

This tool is for personal educational use only. LeetCode problem descriptions are the property of LeetCode. Do not use this tool to redistribute or publish problem content.

License

MIT