From 299f562903407d746ba0a4a53f92b9758089f31c Mon Sep 17 00:00:00 2001
From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com>
Date: Sat, 10 Jan 2026 11:58:19 -0500
Subject: [PATCH 1/4] Update the default sandbox

---
 packages/fastboot/src/sandbox.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/packages/fastboot/src/sandbox.js b/packages/fastboot/src/sandbox.js
index f39685df5..5c801ce79 100644
--- a/packages/fastboot/src/sandbox.js
+++ b/packages/fastboot/src/sandbox.js
@@ -21,12 +21,32 @@ module.exports = class Sandbox {
       {
         sourceMapSupport,
         console,
+        fetch,
+        document,
+        navigator,
         setTimeout,
         clearTimeout,
         URL,
 
         // Convince jQuery not to assume it's in a browser
         module: { exports: {} },
+
+        MutationObserver,
+        ResizeObserver,
+        AbortController,
+        ReadableStream:
+            typeof ReadableStream !== 'undefined'
+                ? ReadableStream
+                : require('node:stream/web').ReadableStream,
+        WritableStream:
+            typeof WritableStream !== 'undefined'
+                ? WritableStream
+                : require('node:stream/web').WritableStream,
+        TransformStream:
+            typeof TransformStream !== 'undefined'
+                ? TransformStream
+                : require('node:stream/web').TransformStream,
+        Headers: typeof Headers !== 'undefined' ? Headers : undefined,
       },
       globals
     );

From c966eeb5c6cdc2958348c194cf2ebf63e5e1695a Mon Sep 17 00:00:00 2001
From: Chris Manson <chris@manson.ie>
Date: Thu, 10 Sep 2026 23:38:22 +0100
Subject: [PATCH 2/4] add atob to the default sandbox

---
 packages/fastboot/src/sandbox.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/fastboot/src/sandbox.js b/packages/fastboot/src/sandbox.js
index 5c801ce79..aa89e8fcf 100644
--- a/packages/fastboot/src/sandbox.js
+++ b/packages/fastboot/src/sandbox.js
@@ -19,6 +19,7 @@ module.exports = class Sandbox {
 
     let sandbox = Object.assign(
       {
+        atob,
         sourceMapSupport,
         console,
         fetch,

From 4d70fbd1de6f2ed74d72f9c3d78a922328205ca7 Mon Sep 17 00:00:00 2001
From: Chris Manson <chris@manson.ie>
Date: Thu, 10 Sep 2026 23:41:23 +0100
Subject: [PATCH 3/4] fix lint

---
 packages/fastboot/src/sandbox.js | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/packages/fastboot/src/sandbox.js b/packages/fastboot/src/sandbox.js
index aa89e8fcf..f5d47dda1 100644
--- a/packages/fastboot/src/sandbox.js
+++ b/packages/fastboot/src/sandbox.js
@@ -36,17 +36,18 @@ module.exports = class Sandbox {
         ResizeObserver,
         AbortController,
         ReadableStream:
-            typeof ReadableStream !== 'undefined'
-                ? ReadableStream
-                : require('node:stream/web').ReadableStream,
+          typeof ReadableStream !== 'undefined'
+            ? ReadableStream
+            : require('node:stream/web').ReadableStream,
         WritableStream:
-            typeof WritableStream !== 'undefined'
-                ? WritableStream
-                : require('node:stream/web').WritableStream,
+          typeof WritableStream !== 'undefined'
+            ? WritableStream
+            : require('node:stream/web').WritableStream,
         TransformStream:
-            typeof TransformStream !== 'undefined'
-                ? TransformStream
-                : require('node:stream/web').TransformStream,
+          typeof TransformStream !== 'undefined'
+            ? // eslint-disable-next-line no-undef
+              TransformStream
+            : require('node:stream/web').TransformStream,
         Headers: typeof Headers !== 'undefined' ? Headers : undefined,
       },
       globals

From 58c9c003b314b293fe6260aeecfc204e0de26b37 Mon Sep 17 00:00:00 2001
From: Chris Manson <chris@manson.ie>
Date: Thu, 10 Sep 2026 23:45:53 +0100
Subject: [PATCH 4/4] only include supported globals in default sandbox

---
 packages/fastboot/src/sandbox.js | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/packages/fastboot/src/sandbox.js b/packages/fastboot/src/sandbox.js
index f5d47dda1..352e6a77d 100644
--- a/packages/fastboot/src/sandbox.js
+++ b/packages/fastboot/src/sandbox.js
@@ -23,8 +23,6 @@ module.exports = class Sandbox {
         sourceMapSupport,
         console,
         fetch,
-        document,
-        navigator,
         setTimeout,
         clearTimeout,
         URL,
@@ -32,8 +30,6 @@ module.exports = class Sandbox {
         // Convince jQuery not to assume it's in a browser
         module: { exports: {} },
 
-        MutationObserver,
-        ResizeObserver,
         AbortController,
         ReadableStream:
           typeof ReadableStream !== 'undefined'