password-analysis/src/feedback.ts

A library for analyzing the strength of a password

export function getFeedback(entropy: number, common: boolean, patterns: string[]): string {
    if (entropy < 28) return "Very weak: Add more characters.";
    if (common) return "Weak: Avoid common passwords.";
    if (patterns.length > 0) return `Weak: Avoid ${patterns.join(", ")} patterns.`;
    if (entropy < 50) return "Moderate: Use a mix of letters, numbers, and symbols.";
    return "Strong password!";
  }