Hydrogen service worker confuses multiple client instances

[jryans]

The Hydrogen service worker causes general confusion when running multiple instances at the same time like Patience does, since all instances hear what the others are doing.

We'll need to do at least one of:

• Isolate each client on its own domain (blocks direct window access)
• Run a modified Hydrogen instance with service workers disabled
• Craft some hack to make it seem like the browser doesn't support service workers

We are already attempting the hack approach:

patience/core/api/adapters/hydrogen.ts

Lines 155 to 170 in a255dce

	// Inject a helper script to disable service workers, as the multiple
	// frames on same domain otherwise affect each other via the service
	// worker.
	const helperScript = frameDoc.createElement("script");
	helperScript.textContent = "(" + function() {
	// We can't delete navigator.serviceWorker, so instead we hide it
	// with a proxy.
	const navigatorProxy = new Proxy({}, {
	has: (target, key) => key !== "serviceWorker" && key in target,
	});
	Object.defineProperty(window, "navigator", {
	value: navigatorProxy,
	});
	console.log("Service worker support disabled");
	} + ")()";
	frameDoc.head.prepend(helperScript);

...but it seems to only work in Firefox. Recent Chrome appears to run the frame's document before the hack has a chance to mess with things.