@grafana/faro-web-sdk/dist/esm/utils/throttle.js

Faro instrumentations, metas, transports for web.

/**
 * Tail based throttle which caches the args of the last call and updates
 */
export function throttle(callback, delay) {
    let pause = false;
    let lastPending;
    const timeoutBehavior = () => {
        if (lastPending == null) {
            pause = false;
            return;
        }
        callback(...lastPending);
        lastPending = null;
        setTimeout(timeoutBehavior, delay);
    };
    return (...args) => {
        if (pause) {
            lastPending = args;
            return;
        }
        callback(...args);
        pause = true;
        setTimeout(timeoutBehavior, delay);
    };
}
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