A simple method to filter an array of objects based on predicates for strings

ArrayFilterWithPredicates.js

/**
 * Built this to filters a large array based on predicates to use with a Vuejs app I was building.
 * It provides a declarative way to filter an array of objects whose properties are strings.
 * But it can be adapted and improved for other types.
 * you can see an example vuejs app that uses this method here: http://jsfiddle.net/ahmedmusallam/jruxn3bh/
 */

(function () {
    /**
     * @param {Arrray} predicates: an array of predicates
     * @param {String} operator: either "OR" or "AND". a logical operator for the predicates
     */
    Array.prototype.filterWithPredicates = function (predicates, operator) {
        
        // no predicates, return all
        if(!predicates) return this;

        // determine predicate evaluation operation
        operator = operator && operator.toUpperCase() === "OR" ? "some" : "every";

        return this.filter(function (item) {
            return predicates
            // test predicates against array item and return an predicateEvaluation array
            .map(function (predicate) {
                var value = item[predicate.property];
                // item is array, check if atleast one element matches
                if (Array.isArray(value)) {
                    return value.some(function (valueItem) {
                        return valueItem.indexOf && valueItem.indexOf(predicate.match) > -1;
                    });
                }
                // item is not an array but has indexOf (most likely string)
                else if (value.indexOf) {
                    return value.indexOf(predicate.match) > -1;
                }
            })
            // use array some/every depending on operator to determine OR/AND operation
            [operator](function (predicateEvaluation) {
                return predicateEvaluation === true;
            });
        });
    }
})();

// Usage
var arr = [
  {
    "id": "5001",
    "type": "None",
    "description": "nada"
  },
  {
    "id": "5002",
    "type": "Glazed",
    "description": "meh"
  },
  {
    "id": "5005",
    "type": "Sugar",
    "description": "it's alright"
  },
  {
    "id": "5007",
    "type": "Powdered Sugar",
    "description": "better than sugar"
  },
  {
    "id": "5006",
    "type": "Chocolate with Sprinkles",
    "description": "yes!"
  },
  {
    "id": "5003",
    "type": "Chocolate",
    "description": "yes! the best"
  }
];

var filteredArr = arr.filterWithPredicates([{
  property:"type", 
  match: "Chocolate"
},{
  property:"description", 
  match: "yes" 
}]);

// returns
/*
[{
  "id": "5007",
  "type": "Powdered Sugar",
  "description": "better than sugar"
},
{
  "id": "5006",
  "type": "Chocolate with Sprinkles",
  "description": "yes!"
 }]
*/