infinite-scroll-svelte/dist/throttle.js

Wrapper that fires events when the user has scrolled it to the beginning or end

export class Throttle {
    throttleIntervalMs;
    nextThrottleTime;
    constructor(throttleIntervalMs, nextThrottleTime = performance.now()) {
        this.throttleIntervalMs = throttleIntervalMs;
        this.nextThrottleTime = nextThrottleTime;
    }
    get isThrottling() {
        const currentTime = performance.now();
        const mustThrottle = currentTime < this.nextThrottleTime;
        if (mustThrottle === false) {
            this.nextThrottleTime = currentTime + this.throttleIntervalMs;
        }
        return mustThrottle;
    }
}