All files / src/utils authUtils.ts

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// src/utils/authUtils.ts
import zxcvbn from 'zxcvbn';
 
/**
 * Validates the strength of a password using zxcvbn.
 * @param password The password to validate.
 * @returns An object with `isValid` and a feedback message.
 */
export function validatePasswordStrength(password: string): {
  isValid: boolean;
  feedback: string;
} {
  const result = zxcvbn(password);
  // Score: 0-4. We require at least 3.
  if (result.score < 3) {
    const suggestions = result.feedback.suggestions.join(' ');
    return { isValid: false, feedback: `Password is too weak. ${suggestions}` };
  }
  return { isValid: true, feedback: '' };
}