only apply polyfills where necessary - closes #7374

sveltejs · Nov 15, 2022 · b1e6461 · b1e6461
1 parent ab2fac6
commit b1e6461
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diff --git a/.changeset/many-rivers-hide.md b/.changeset/many-rivers-hide.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+Only apply polyfills where necessary
diff --git a/packages/kit/src/exports/node/polyfills.js b/packages/kit/src/exports/node/polyfills.js
@@ -18,6 +18,8 @@ const globals = {
 // exported for dev/preview and node environments
 export function installPolyfills() {
 	for (const name in globals) {
+		if (name in globalThis) continue;
+
 		Object.defineProperty(globalThis, name, {
 			enumerable: true,
 			configurable: true,