scuffed as fuck blob rewriting

src/client/shared/worker.ts

@@ -6,7 +6,18 @@ export default function (client: ScramjetClient, self: typeof globalThis) {
 		construct({ args }) {
 			if (args[0] instanceof URL) args[0] = args[0].href;
 			if (args[0].startsWith("blob:") || args[0].startsWith("data:")) {
-				// TODO
+				if (args[0].startsWith("blob:")) {
+					args[0] =
+						"data:application/javascript;base64," + btoa(syncfetch(args[0]));
+				}
+
+				args[0] = "/scramjet/worker?data=" + args[0];
+				if (args[1] && args[1].type === "module") {
+					args[0] += "&type=module";
+				}
+
+				args[0] += "&origin=" + encodeURIComponent(client.url.origin);
+
 				return;
 			}
 
@@ -18,3 +29,11 @@ export default function (client: ScramjetClient, self: typeof globalThis) {
 		},
 	});
 }
+
+function syncfetch(url: string) {
+	const xhr = new XMLHttpRequest();
+	xhr.open("GET", url, false);
+	xhr.send();
+
+	return xhr.responseText;
+}

src/worker/fetch.ts

@@ -13,6 +13,28 @@ export async function swfetch(
 	this: ScramjetServiceWorker,
 	{ request }: FetchEvent
 ) {
+	if (new URL(request.url).pathname.startsWith("/scramjet/worker")) {
+		const dataurl = new URL(request.url).searchParams.get("data");
+		const res = await fetch(dataurl);
+		const ab = await res.arrayBuffer();
+
+		const ismodule = new URL(request.url).searchParams.get("type") === "module";
+
+		const origin = new URL(
+			decodeURIComponent(new URL(request.url).searchParams.get("origin"))
+		);
+
+		if (ismodule) origin.searchParams.set("type", "module");
+
+		const rewritten = rewriteWorkers(ab, new URL(origin));
+
+		return new Response(rewritten, {
+			headers: {
+				"Content-Type": "application/javascript",
+			},
+		});
+	}
+
 	const urlParam = new URLSearchParams(new URL(request.url).search);
 
 	if (urlParam.has("url")) {