Access Token Check Input Validation - Typescript Implementation

// /[;&|`\$\(\)\{\}\[\]<>]/ - Professional TypeScript Implementation
import { ValidationResult } from './types';

interface PatternValidator {
  validate(input: string): ValidationResult;
  validateAsync(input: string): Promise<ValidationResult>;
}

class RegexValidator implements PatternValidator {
  private readonly pattern: RegExp;
  
  constructor(pattern: string) {
    this.pattern = new RegExp(pattern);
  }
  
  validate(input: string): ValidationResult {
    if (!input || typeof input !== 'string') {
      return { isValid: false, error: 'Input must be a non-empty string' };
    }
    
    try {
      const isValid = this.pattern.test(input.trim());
      return {
        isValid,
        error: isValid ? null : 'Pattern validation failed',
        metadata: { pattern: this.pattern.source, ecosystem: 'web' }
      };
    } catch (error) {
      return { isValid: false, error: 'Regex execution error' };
    }
  }
  
  async validateAsync(input: string): Promise<ValidationResult> {
    return new Promise((resolve) => {
      // Simulate async validation with error handling
      setTimeout(() => resolve(this.validate(input)), 0);
    });
  }
}

// Usage with comprehensive error handling
const validator = new RegexValidator('/[;&|`\$\(\)\{\}\[\]<>]/');
const result = validator.validate(userInput);

if (result.isValid) {
  console.log('✅ Validation passed');
} else {
  console.error('❌ Validation failed:', result.error);
}

const regex = //[;&|`\$\(\)\{\}\[\]<>]//;
const isValid = regex.test(input.trim());

import re
regex = re.compile(r"/[;&|`\$\(\)\{\}\[\]<>]/")
is_valid = bool(regex.match(input.strip()))