From 9a53b70cbb8f439d36cf1f2c91eaa774f6680819 Mon Sep 17 00:00:00 2001
From: jake champion <jake.champion@netlify.com>
Date: Thu, 21 Nov 2024 14:50:15 +0000
Subject: [PATCH] fix: call `init` when the module is imported and not when we
 call the `csp` function

this avoids a potential race condition where multiple calls to `init` have happened, which ends up causes memory out of bounds errors
---
 pkg/html_rewriter_bg.wasm | Bin 536422 -> 536422 bytes
 src/index.ts              |   6 +++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkg/html_rewriter_bg.wasm b/pkg/html_rewriter_bg.wasm
index 2401fb2992cc37404d4e9fc8a9758f6145e1397f..3c21811f8513663a69b77410583222b51cfa22e3 100644
GIT binary patch
delta 35
qcmaEMPvO};g@zW!7N!>F7M3ln)B6}1+h_E#0x{e68GY>M761SfE)Mzt

delta 35
qcmaEMPvO};g@zW!7N!>F7M3ln)B6}X+Gq5!0x{e68GY>M761Sfmk$8|

diff --git a/src/index.ts b/src/index.ts
index c675879..a9e546a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,8 @@
-import init from "../pkg/html_rewriter.js";
 import { HTMLRewriter } from "./html_rewriter_wrapper.ts";
 import { Element } from "./types.d.ts";
 
+import { default as init } from "../pkg/html_rewriter.js";
+await init();
 type Params = {
   /**
    * When true, uses the `Content-Security-Policy-Report-Only` header instead
@@ -59,7 +60,7 @@ function uInt8ArrayToBase64String(input: Uint8Array): string {
   return btoa(res);
 }
 
-export async function csp(originalResponse: Response, params?: Params) {
+export function csp(originalResponse: Response, params?: Params) {
   const isHTMLResponse = originalResponse.headers.get("content-type")
     ?.startsWith(
       "text/html",
@@ -146,7 +147,6 @@ export async function csp(originalResponse: Response, params?: Params) {
   }
 
   const querySelectors = ["script", 'link[rel="preload"][as="script"]'];
-  await init();
   return new HTMLRewriter()
     .on(querySelectors.join(","), {
       element(element: Element) {