@ideal-postcodes/jsutil/esm/watcher.js

Browser Address Autocomplete for api.ideal-postcodes.co.uk

import { debounce } from "./debounce";
export const watchTimer = ({ bind, interval = 1000 }) => {
    let timer = null;
    const start = () => {
        timer = window.setInterval(() => {
            try {
                bind();
            }
            catch (e) {
                stop();
            }
        }, interval);
        return timer;
    };
    const stop = () => {
        if (timer === null)
            return;
        window.clearInterval(timer);
        timer = null;
    };
    return { start, stop };
};
export const watchMutation = ({ bind, interval = 1000, target = window.document, observerConfig = {
    subtree: true,
    childList: true,
}, }) => {
    const observer = new MutationObserver(debounce(() => {
        try {
            bind();
        }
        catch (e) {
            stop();
        }
    }, interval));
    const start = () => {
        observer.observe(target, observerConfig);
        return null;
    };
    const stop = () => observer.disconnect();
    return { start, stop };
};
export const watchChange = (options) => {
    if (!window)
        return watchTimer(options);
    if (!window.MutationObserver)
        return watchTimer(options);
    if (options.mutationObserver)
        return watchMutation(options);
    return watchTimer(options);
};