fix(proxy-state-tree): prevent proxying Date instances

Author: christianalfoni

packages/node_modules/proxy-state-tree/src/Proxyfier.ts

@@ -174,7 +174,7 @@ export class Proxifier {
           prop === 'length' ||
           (typeof target[prop] === 'function' &&
             !arrayMutations.has(String(prop))) ||
-          typeof prop === 'symbol'
+          typeof prop === 'symbol' || target[prop] instanceof Date
         ) {
           return target[prop]
         }
@@ -272,7 +272,7 @@ export class Proxifier {
         if (prop === VALUE) return object
         if (prop === PROXY_TREE) return proxifier.tree
 
-        if (typeof prop === 'symbol' || prop in Object.prototype)
+        if (typeof prop === 'symbol' || prop in Object.prototype || target[prop] instanceof Date)
           return target[prop]
 
         const descriptor = Object.getOwnPropertyDescriptor(target, prop) || Object.getOwnPropertyDescriptor(Object.getPrototypeOf(target), prop)