CodeReview — AI-Powered Code Review Assistant

Combines fast local regex pattern matching with deep AI-powered analysis to deliver thorough, actionable code reviews. Runs a local static analysis pre-pass first, then sends code and initial findings to an AI model for comprehensive review including bug detection, security analysis, performance suggestions, and style feedback.

How It Works

1. Local Pre-Pass — Regex-based pattern matching runs instantly, catching hardcoded secrets, eval usage, SQL injection patterns, empty catch blocks, long functions, and more.
2. AI Deep Review — The full source code and local findings are sent to your chosen AI model (Anthropic, OpenAI, or Ollama) for deep reasoning about bugs, logic errors, performance, and architecture.
3. Graceful Fallback — If no API key is set or the AI call fails, you still get local static analysis results. Never blocks your workflow.

Usage

const { CodeReview } = require('./src/code-review');

// AI-powered review (default: anthropic/claude-haiku-4-5)
const reviewer = new CodeReview({ model: 'anthropic/claude-haiku-4-5' });
const result = await reviewer.review('./src/auth.js');

console.log(result.score);        // 1-10
console.log(result.issues);       // Array of issues with severity, line, type, message
console.log(result.suggestions);  // Actionable improvement suggestions
console.log(result.summary);      // Concise quality summary
console.log(result.aiPowered);    // true

// Review an entire directory
const dirResult = await reviewer.reviewDir('./src', {
  include: ['*.js', '*.ts'],
  exclude: ['node_modules', '.git', 'dist'],
  concurrency: 3
});
console.log(dirResult.averageScore);
console.log(dirResult.totalIssues);

Model Options

// OpenAI
const reviewer = new CodeReview({ model: 'openai/gpt-4o-mini' });

// Local Ollama
const reviewer = new CodeReview({ model: 'ollama/codellama' });

// Local-only (no AI, regex patterns only)
const reviewer = new CodeReview();
const result = await reviewer.review('./src/app.js');
// result.aiPowered === false

What It Catches

Output Format

{
  "file": "./src/auth.js",
  "score": 5,
  "issues": [
    {
      "severity": "high",
      "line": 42,
      "type": "security",
      "message": "User input passed directly to SQL query without parameterization"
    },
    {
      "severity": "medium",
      "line": 87,
      "type": "bugs",
      "message": "Empty catch block silently swallows database connection errors"
    }
  ],
  "suggestions": [
    "Use parameterized queries or an ORM to prevent SQL injection on line 42",
    "Add error logging in the catch block on line 87",
    "Extract the authentication logic into a separate middleware module"
  ],
  "summary": "The auth module has a critical SQL injection vulnerability and several error handling gaps. Core logic is sound but needs security hardening.",
  "totalIssues": 2,
  "lines": 142,
  "aiPowered": true,
  "model": "anthropic/claude-haiku-4-5"
}

Language Support

Works with any language your AI model understands. The local pre-pass targets common patterns across languages. AI review tested with:

JavaScript, TypeScript, Python, Go, Rust, Java, C#, Ruby, PHP, Swift, Kotlin

Technical Details

• Zero npm dependencies — Pure Node.js using only built-in https, http, fs, and path modules
• File truncation — Files are truncated at 8,000 characters before sending to AI to stay within token limits
• Concurrency control — Directory reviews process files in configurable parallel batches (default: 3)
• Graceful degradation — AI failures never crash; local results are always available

⚠️ Disclaimer

This software is provided "AS IS", without warranty of any kind, express or implied.

USE AT YOUR OWN RISK.

• The author(s) are NOT liable for any damages, losses, or consequences arising from the use or misuse of this software — including but not limited to financial loss, data loss, security breaches, business interruption, or any indirect/consequential damages.
• This software does NOT constitute financial, legal, trading, or professional advice.
• Users are solely responsible for evaluating whether this software is suitable for their use case, environment, and risk tolerance.
• No guarantee is made regarding accuracy, reliability, completeness, or fitness for any particular purpose.
• The author(s) are not responsible for how third parties use, modify, or distribute this software after purchase.

By downloading, installing, or using this software, you acknowledge that you have read this disclaimer and agree to use the software entirely at your own risk.

DATA DISCLAIMER: When an AI model is configured, this software sends your source code and static analysis findings to the configured provider (Anthropic, OpenAI, or a local Ollama instance). Do not run it over code containing secrets or sensitive data unless you understand where data is sent. Without an API key, all analysis is local-only. The author(s) are not responsible for data loss, corruption, or unauthorized access resulting from software bugs, system failures, or user error. Always maintain independent backups of important data. When AI models are configured, file contents are sent to the respective AI provider's API (Anthropic, OpenAI, or your local Ollama instance). No data is transmitted externally when running in local-only mode (no model configured).

Support & Links

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