jdStrictScope.js

<script type="text/javascript">
'use strict';

var defineGetterAndSetterProperty = function(sourceObject, targetObject, property) {
  Object.defineProperty(targetObject, property, {
    set: function (newValue) {
      sourceObject[property] = newValue;
    },              
    get: function () {
      return sourceObject[property];
    }
  });        
};

var createUndeclaredScope = function(scope) {
  var UndeclaredScope = function() {
    var self = this;

    this.declare = function(obj) {
      angular.forEach(obj, function(value, key) {
        scope[key] = angular.isFunction(value) ? angular.bind(scope, value) : value;
      });

      return Object.seal(scope);
    };

    angular.forEach(scope, function(value, key) {
      if (!scope.hasOwnProperty(key)) {
        return;
      }

      defineGetterAndSetterProperty(scope, self, key);
    });

    return Object.seal(this);
  };
  UndeclaredScope.prototype = scope;

  return new UndeclaredScope();
};
    
var isStrictModeEnabled = function() {
  return (this === undefined);
};

var prepareControllerScope = function(scope) {
  if (isStrictModeEnabled()) {
    return createUndeclaredScope(scope);
  } else {
    scope.declare = function(obj) {
      angular.extend(scope, obj);
      return this;
    };

    return scope;
  }
};
    
angular.module('jdStrictScope', [])
  .config(function($provide) {
    $provide.decorator('$controller', function($delegate) {
      return function(constructor, locals) {
        var originalScope = locals.$scope;

        locals.$scope = prepareControllerScope(locals.$scope);

        return (function(window, document, undefined) {
          return $delegate(constructor, locals);
        }(window, document));
      };
    })
  });

</script>