added revocable proxies example

sumeetsarkar · Nov 20, 2017 · 9c1ac88 · 9c1ac88
1 parent 66ecb05
commit 9c1ac88
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -15,6 +15,6 @@
 10. [Let Const Var](let-const-var/index.js)
 11. [Object literals](object-literals/index.js)
 12. [Promises](promises/index.js)
-13. [Proxies](proxies/index.js)
+13. [Proxies/ Revocable Proxies](proxies/index.js)
 14. [Spread](spread/index.js)
 15. [Template / Tagged Template literals](template-literals/index.js)
diff --git a/proxies/index.js b/proxies/index.js
@@ -49,11 +49,21 @@
     console.log(myProxyObj.name);
     console.log(myProxyObj.language);
   }
+
+  function demoRevocableProxy() {
+    const { proxy, revoke } = Proxy.revocable({}, {}); // passing empty object as target and handler
+    proxy.name = 'Sumeet Sarkar';
+    console.log(proxy.name);
+    revoke();
+    console.log(proxy); // works, as Proxy still shows the entire object
+    console.log(proxy.name); // error! TypeError: Cannot perform 'get' on a proxy that has been revoked
+  }
 
   function demo() {
     console.log('\n\PROXIES');
     demoSimpleProxy();
     demoProxyCreator();
+    demoRevocableProxy();
   };
 
   (context || this).demoLibs['proxies'] = demo;