fix(pouchdb-error): do not inherit error properties by copying from p…

…arent error manually

to avoid Hermes from causing an error. See facebook/hermes#1496

packages/node_modules/pouchdb-errors/src/index.js

@@ -44,26 +44,13 @@ var MISSING_STUB = new PouchError(412, 'missing_stub', 'A pre-existing attachmen
 var INVALID_URL = new PouchError(413, 'invalid_url', 'Provided URL is invalid');
 
 function createError(error, reason) {
-  function CustomPouchError(reason) {
-    // inherit error properties from our parent error manually
-    // so as to allow proper JSON parsing.
-    var names = Object.getOwnPropertyNames(error);
-    for (var i = 0, len = names.length; i < len; i++) {
-      if (typeof error[names[i]] !== 'function') {
-        this[names[i]] = error[names[i]];
-      }
-    }
-
-    if (this.stack === undefined) {
-      this.stack = (new Error()).stack;
-    }
-
-    if (reason !== undefined) {
-      this.reason = reason;
-    }
+  // inherit error properties from our parent error manually
+  // so as to allow proper JSON parsing.
+  var err = new PouchError(error.status, error.name, error.message);
+  if (reason !== undefined) {
+    err.reason = reason;
   }
-  CustomPouchError.prototype = PouchError.prototype;
-  return new CustomPouchError(reason);
+  return err;
 }
 
 function generateErrorFromResponse(err) {