@grafana/faro-web-sdk/dist/esm/instrumentations/_internal/monitors/domMutationMonitor.js

Faro instrumentations, metas, transports for web.

import { Observable } from '@grafana/faro-core';
import { MESSAGE_TYPE_DOM_MUTATION } from './const';
let domMutationObservable;
let domMutationObserver;
export function monitorDomMutations() {
    if (!domMutationObservable) {
        domMutationObservable = new Observable();
    }
    if (!domMutationObserver) {
        domMutationObserver = new MutationObserver((_mutationsList, _observer) => {
            domMutationObservable.notify({ type: MESSAGE_TYPE_DOM_MUTATION });
        });
        domMutationObserver.observe(document, {
            attributes: true,
            childList: true,
            subtree: true,
            characterData: true,
        });
    }
    return domMutationObservable;
}
// Test-only utility to reset state between tests
export function __resetDomMutationMonitorForTests() {
    if (domMutationObserver) {
        domMutationObserver.disconnect();
    }
    domMutationObserver = undefined;
    domMutationObservable = undefined;
}
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