Simple token bucket implementation

Bucket.js

class Bucket {
    constructor(size, per) {
        this.per = per;
        this.size = size;

        this.lastFilled = Math.floor(Date.now() / 1000);
        this.tokens = size;
    }

    take() {
        this.refill();
        if (this.tokens <= 0) {
            return false;
        }

        this.tokens--;
        return true;
    }

    refill() {
        const now = Math.floor(Date.now() / 1000);
	const rate = (now - this.lastFilled) / this.per;
        console.log('Rate: ', rate);

        this.tokens = Math.min(this.size, this.tokens + Math.floor(rate * this.size));
        this.lastFilled = now;
        console.log('Refilled to ' + this.tokens);
    }
}