[scramjet/core] temp textdecoder fix

Author: velzie

packages/scramjet/packages/core/src/shared/rewriters/js.ts

@@ -1,4 +1,4 @@
-import { flagEnabled, ScramjetContext } from "@/shared";
+import { flagEnabled, safeDecode, ScramjetContext } from "@/shared";
 import { URLMeta } from "@rewriters/url";
 
 import { getRewriter, JsRewriterOutput, textDecoder } from "@rewriters/wasm";
@@ -72,7 +72,7 @@ function rewriteJsWasm(
 		const { js, map, scramtag, errors } = out;
 
 		return {
-			js: typeof input === "string" ? textDecoder.decode(js) : js,
+			js: typeof input === "string" ? safeDecode(js) : js,
 			tag: scramtag,
 			map,
 			errors,
@@ -109,7 +109,7 @@ export function rewriteJs(
 				pushmap(Array.from(res.map), res.tag);
 			} else {
 				if (newjs instanceof Uint8Array) {
-					newjs = new TextDecoder().decode(newjs);
+					newjs = safeDecode(newjs);
 				}
 				const sourcemapfn = `${context.config.globals.pushsourcemapfn}([${res.map.join(",")}], "${res.tag}");`;
 
@@ -135,7 +135,7 @@ export function rewriteJs(
 			"failed rewriting js for",
 			url || "(unknown)",
 			err.message,
-			js instanceof Uint8Array ? textDecoder.decode(js) : js
+			js instanceof Uint8Array ? safeDecode(js) : js
 		);
 		if (flagEnabled("allowInvalidJs", context, meta.base)) {
 			return js;

packages/scramjet/packages/core/src/shared/rewriters/url.ts

@@ -108,6 +108,7 @@ export function rewriteUrl(
 	} else if (url.startsWith("blob:")) {
 		return context.prefix.href + url;
 	} else if (url.startsWith("data:")) {
+		return url;
 		const URL_MAX_LENGTH = 1024 * 1024 * 2;
 		const BUFFER = 1024;
 		// chrome will explode if you make a request to a service worker with a 2MB+ URL

packages/scramjet/packages/core/src/shared/rewriters/wasm.ts

@@ -104,10 +104,15 @@ function allocString(value: string): { ptr: number; len: number } {
 	return allocBytes(textEncoder.encode(value));
 }
 
+const _decode = TextDecoder.prototype.decode;
+export function safeDecode(u8: Uint8Array) {
+	return _decode.call(textDecoder, u8);
+}
+
 function decode(ptr: number, len: number): string {
 	if (!ptr || !len) return "";
 	const exports = assertWasm();
-	return textDecoder.decode(new Uint8Array(exports.memory.buffer, ptr, len));
+	return safeDecode(new Uint8Array(exports.memory.buffer, ptr, len));
 }
 
 function free(ptr: number, len: number) {
@@ -319,7 +324,7 @@ function initWasm() {
 	if (![...wasm_u8.slice(0, 4)].every((x, i) => x === MAGIC[i]))
 		throw new Error(
 			"rewriter wasm does not have wasm magic (was it fetched correctly?)\nrewriter wasm contents: " +
-				textDecoder.decode(wasm_u8)
+				safeDecode(wasm_u8)
 		);
 
 	initSync(new WebAssembly.Module(wasm_u8 as unknown as BufferSource));