1class TokenValidator {
2    constructor(expirationMinutes = 60) {
3        this.expirationMs = expirationMinutes * 60 * 1000;
4    }
5
6    createToken(userId) {
7        return {
8            userId,
9            created: Date.now(),
10            expires: Date.now() + this.expirationMs
11        };
12    }
13
14    isValid(token) {
15        if (!token?.expires) return false;
16        const now = Date.now();
17        const timeLeft = token.expires - now;
18        return timeLeft > 0;
19    }
20}
21
22const validator = new TokenValidator(1); // 1 minute expiration
23const token = validator.createToken('user123');
24
25setTimeout(() => {
26    console.log(validator.isValid(token));
27}, 30 * 1000); // Check after 30 seconds
28
29setTimeout(() => {
30    console.log(validator.isValid(token));
31}, 90 * 1000); // Check after 90 seconds