From 4e78e3351d3bc61526199f664894b907f5e2f819 Mon Sep 17 00:00:00 2001
From: MrBBot <me@mrbbot.dev>
Date: Mon, 3 Jan 2022 13:22:32 +0000
Subject: [PATCH] Auto-enable `proxy_primitive_instanceof` for `type = "rust"`
 projects

---
 packages/core/src/plugins/build.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/core/src/plugins/build.ts b/packages/core/src/plugins/build.ts
index 32b8663dd..1172d0252 100644
--- a/packages/core/src/plugins/build.ts
+++ b/packages/core/src/plugins/build.ts
@@ -138,5 +138,9 @@ export function _populateBuildConfig(
       "generated",
       "script.wasm"
     );
+
+    // Proxy `instanceof` checks on primitives for wasm-bindgen
+    config.miniflare ??= {};
+    config.miniflare.proxy_primitive_instanceof = true;
   }
 }