@wordpress/e2e-test-utils/build-module/observe-focus-loss.js

End-To-End (E2E) test utils for WordPress.

async function enableFocusLossObservation() {
  await page.evaluate(() => {
    if (window._detectFocusLoss) {
      document.body.removeEventListener(
        "focusout",
        window._detectFocusLoss
      );
    }
    window._detectFocusLoss = (event) => {
      if (!event.relatedTarget) {
        throw new Error("Unexpected focus loss");
      }
    };
    document.body.addEventListener("focusout", window._detectFocusLoss);
  });
}
async function disableFocusLossObservation() {
  await page.evaluate(() => {
    if (window._detectFocusLoss) {
      document.body.removeEventListener(
        "focusout",
        window._detectFocusLoss
      );
    }
  });
}
export {
  disableFocusLossObservation,
  enableFocusLossObservation
};
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