Numbers-LE: Zero Hassle Number Extraction

Extract 1.5M numbers per second • 100x faster than manual searching
JSON, YAML, CSV, TOML, INI, ENV

Downloads

Number Extraction Demo

Command Palette

⚡ See It In Action

Before: Manually copying numbers from a 1,000-line JSON file (30 minutes)

{
  "revenue": 1250000,
  "profit": 340000,
  "expenses": [125000, 89000, 56000]
  // ... 200 more values buried in nested objects
}

After: One command extracts all 203 numbers with stats in 0.2 seconds

Numbers: 203 total
Sum: 15,234,567
Average: 75,023
Min: 1,200 | Max: 1,250,000
Median: 45,000

Time Saved: 30 minutes → 1 second ⚡

✅ Why Numbers-LE?

1.5M numbers per second - 100x faster than manual searching
Zero Config - Install → Press Cmd+Alt+N → Get stats instantly
Battle-Tested - 171 unit tests, 95% coverage, zero critical vulnerabilities
Security-Hardened - 42 tests prevent CSV formula injection, DDE attacks, SQL/XSS vectors

Perfect for data validation, config audits, and financial analysis.

🙏 Thank You

If Numbers-LE saves you time, a quick rating helps other developers discover it:
⭐ Open VSX • VS Code Marketplace

Key Features

Statistical analysis - Count, sum, average, min, max, median, mode, std dev
Automatic cleanup - Sort, dedupe, and filter by ranges
6 file formats - JSON, YAML, CSV, TOML, INI, ENV
Smart filtering - Excludes IDs, version numbers, non-data noise
CSV streaming - Handle 500MB+ files without memory issues
13 languages - English, Chinese, German, Spanish, French, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Ukrainian, Vietnamese

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💡 Use Cases

Financial Analysis - Extract revenue, profit, and growth metrics from JSON/CSV for quick validation
Config Validation - Pull timeouts, limits, and thresholds from YAML/TOML/INI for auditing
Performance Monitoring - Analyze CPU, memory, and response times from logs and metrics files
Data QA - Get instant statistics (avg, median, outliers) on numeric datasets

🚀 Quick Start

Install from Open VSX or VS Code Marketplace
Open any supported file type (Cmd/Ctrl + P → search for "Numbers-LE")
Run Quick Extract (Cmd+Alt+N / Ctrl+Alt+N / Status Bar)

⚙️ Configuration

numbers-le.openResultsSideBySide – Open to the side
numbers-le.csv.streamingEnabled – Toggle CSV streaming
numbers-le.dedupeEnabled – Auto-dedupe numbers
numbers-le.sortEnabled – Auto-sort output
numbers-le.analysis.enabled – Enable statistical analysis
numbers-le.analysis.includeStats – Include detailed statistics
Safety Guards – File size warnings & thresholds
Notification Levels – Control verbosity and alerts

⚡ Performance

Numbers-LE is built for speed and handles files from 100KB to 30MB+. See detailed benchmarks.

Format	File Size	Throughput	Duration	Memory	Tested On
JSON	0.13MB	1218182	~1.1	< 1MB	Apple Silicon
JSON	1.31MB	1593824	~8.42	< 1MB	Apple Silicon
JSON	6.55MB	1356652	~49.46	< 1MB	Apple Silicon
CSV	0.5MB	1232136	~15.87	< 1MB	Apple Silicon
CSV	3MB	1548819	~75.77	~13MB	Apple Silicon
CSV	10MB	1204916	~324.64	< 1MB	Apple Silicon
ENV	5K lines	1,561,687	~19.21	< 1MB	Apple Silicon

Real-World Performance: Tested with actual data up to 30MB (practical limit: 1MB warning, 10MB error threshold)
Performance Monitoring: Built-in real-time tracking with configurable thresholds
Full Metrics: docs/PERFORMANCE.md • Test Environment: macOS, Bun 1.2.22, Node 22.x

For detailed information, see Performance Monitoring.

🧩 System Requirements

VS Code 1.70.0+ • Platform Windows, macOS, Linux
Memory 500MB recommended for large files

🔒 Privacy

100% local processing. No data leaves your machine. Optional logging: numbers-le.telemetryEnabled

🌍 Language Support

13 languages: English, German, Spanish, French, Indonesian, Italian, Japanese, Korean, Portuguese (Brazil), Russian, Ukrainian, Vietnamese, Chinese (Simplified)

🔧 Troubleshooting

Not detecting numbers?
Ensure file is saved with supported extension (.json, .yaml, .csv, .toml, .ini, .env)

Large files slow?
Enable CSV streaming: numbers-le.csv.streamingEnabled: true

Need help?
Check Issues or enable logging: numbers-le.telemetryEnabled: true

❓ FAQ

What numbers are extracted?
Integers, floats, percentages, currencies (excludes IDs, version numbers)

Can I get statistics?
Yes, enable numbers-le.analysis.enabled: true for avg, median, std dev, outliers

Max file size?
Up to 500MB with CSV streaming. Practical limit: 10MB for other formats

CSV streaming?
Enable numbers-le.csv.streamingEnabled: true to process large CSVs in chunks

📊 Testing

171 unit tests • 95% function coverage, 80% line coverage
Powered by Vitest • Run with bun run test:coverage

Core Principle

No broken or failed tests are allowed in commits. All tests must pass before code can be committed or merged.

Test Suite Highlights

42 security tests for CSV/ENV/INI injection prevention
Comprehensive coverage of JSON, YAML, CSV, TOML, INI, ENV formats
Statistical analysis validation and edge case handling

For detailed testing guidelines, see Testing Guidelines.

Numbers-LE

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