If you want to test out ES2015 features (incl. proxies) coming soon in V8, you can download Chrome Canary and turn on the Experimental JavaScript flag (under ch

If you want to test out ES2015 features (incl. proxies) coming soon in V8, you can download Chrome Canary and turn on the Experimental JavaScript flag (under chrome://flags). With the flag enabled, Chrome reaches 91% percent on the Kangax table [0]. We're working hard to turn these features on by default as soon as possible. [0]: https://kangax.github.io/compat-table/es6/ https://kangax.github.io/compat-table/es6/ (Disclaimer: I'm a PM on the V8 team)