fix: Don't use proxies if Proxy.revocable is not defined. Fixes #435

Use legacy proxies if Proxy.revocable is not defined. Fixes #435
immerjs · Oct 4, 2019 · c84aa53 · c84aa53
2 parents f37b6be + e19d129
commit c84aa53
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/immer.js b/src/immer.js
@@ -19,7 +19,10 @@ import {ImmerScope} from "./scope"
 function verifyMinified() {}
 
 const configDefaults = {
-	useProxies: typeof Proxy !== "undefined" && typeof Reflect !== "undefined",
+	useProxies:
+		typeof Proxy !== "undefined" &&
+		typeof Proxy.revocable !== "undefined" &&
+		typeof Reflect !== "undefined",
 	autoFreeze:
 		typeof process !== "undefined"
 			? process.env.NODE_ENV !== "production"