3 ms·

Proxy has already been standardised (in ES6) so it should be coming into browsers soon. It's a little harder to polyfill than O.o though.

• AnkhMorporkian 11y ago
  As far as I know Proxy is impossible to polyfill. There are some patches which make old browser versions of Proxy meet the spec, but I just don't think you can close the Proxy gap with pure javascript.
  • pipeep 11y ago
    It's possible if you also translate all of the code that uses the polyfilled object by converting every MemberExpression to a function call, but that's probably a nightmare for performance.
    • bcherny 11y ago
      what happens when i add a property to the object that i'm proxying after the Proxy is already instantiated? you wouldn't be able to detect the addition and add getters/setters for the property unless you use some sort of O.o or dirty checking on the underlying object. see https://github.com/bcherny/auditable https://github.com/bcherny/auditable for an implementation, sans O.o.
      • pipeep 11y ago
        If you intercept every MemberExpression on every object, you can solve this (with the exception of eval), but as I said, it would be incredibly slow.