Function checkValidServiceWorker

flow-debugger/debugger-ui/src/serviceWorker.js:101–130

(swUrl, config)

}

function checkValidServiceWorker(swUrl, config) {
    // Check if the service worker can be found. If it can't reload the page.
    fetch(swUrl, {
        headers: { "Service-Worker": "script" },
    })
        .then((response) => {
            // Ensure service worker exists, and that we really are getting a JS file.
            const contentType = response.headers.get("content-type");
            if (
                response.status === 404 ||
                (contentType != null &&
                    contentType.indexOf("javascript") === -1)
            ) {
                // No service worker found. Probably a different app. Reload the page.
                navigator.serviceWorker.ready.then((registration) => {
                    registration.unregister().then(() => {
                        window.location.reload();
                    });
                });
            } else {
                // Service worker found. Proceed as normal.
                registerValidSW(swUrl, config);
            }
        })
        .catch(() => {
            console.log(
                "No internet connection found. App is running in offline mode."
            );
        });
}

export function unregister() {
    if ("serviceWorker" in navigator) {