strategy_2

class FormValidator {
    constructor(strategy) {
        this.strategy = strategy;
    }

    validate(data) {
        return this.strategy.validate(data);
    }
}

class EmailValidation {
    validate(email) {
        return /\S+@\S+\.\S+/.test(email);
    }
}

class PasswordValidation {
    validate(password) {
        return password.length > 6;
    }
}

const emailValidator = new FormValidator(new EmailValidation());
console.log(emailValidator.validate("test@example.com")); // true