@sentry/browser/build/npm/cjs/dev/tracing/backgroundtab.js

Official Sentry SDK for browsers

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

const browser = require('@sentry/core/browser');
const debugBuild = require('../debug-build.js');
const helpers = require('../helpers.js');

function registerBackgroundTabDetection() {
  if (helpers.WINDOW.document) {
    helpers.WINDOW.document.addEventListener("visibilitychange", () => {
      const activeSpan = browser.getActiveSpan();
      if (!activeSpan) {
        return;
      }
      const rootSpan = browser.getRootSpan(activeSpan);
      if (helpers.WINDOW.document.hidden && rootSpan) {
        const cancelledStatus = "cancelled";
        const { op, status } = browser.spanToJSON(rootSpan);
        if (debugBuild.DEBUG_BUILD) {
          browser.debug.log(`[Tracing] Transaction: ${cancelledStatus} -> since tab moved to the background, op: ${op}`);
        }
        if (!status) {
          rootSpan.setStatus({ code: browser.SPAN_STATUS_ERROR, message: cancelledStatus });
        }
        rootSpan.setAttribute("sentry.cancellation_reason", "document.hidden");
        rootSpan.end();
      }
    });
  } else {
    debugBuild.DEBUG_BUILD && browser.debug.warn("[Tracing] Could not set up background tab detection due to lack of global document");
  }
}

exports.registerBackgroundTabDetection = registerBackgroundTabDetection;
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