var push = [].push;
-// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
+// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterOut }` methods implementation
var createMethod = function (TYPE) {
var IS_MAP = TYPE == 1;
var IS_FILTER = TYPE == 2;
var IS_SOME = TYPE == 3;
var IS_EVERY = TYPE == 4;
var IS_FIND_INDEX = TYPE == 6;
+ var IS_FILTER_OUT = TYPE == 7;
var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
return function ($this, callbackfn, that, specificCreate) {
var O = toObject($this);
var length = toLength(self.length);
var index = 0;
var create = specificCreate || arraySpeciesCreate;
- var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
+ var target = IS_MAP ? create($this, length) : IS_FILTER || IS_FILTER_OUT ? create($this, 0) : undefined;
var value, result;
for (;length > index; index++) if (NO_HOLES || index in self) {
value = self[index];
case 5: return value; // find
case 6: return index; // findIndex
case 2: push.call(target, value); // filter
- } else if (IS_EVERY) return false; // every
+ } else switch (TYPE) {
+ case 4: return false; // every
+ case 7: push.call(target, value); // filterOut
+ }
}
}
return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
find: createMethod(5),
// `Array.prototype.findIndex` method
// https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
- findIndex: createMethod(6)
+ findIndex: createMethod(6),
+ // `Array.prototype.filterOut` method
+ // https://github.com/tc39/proposal-array-filtering
+ filterOut: createMethod(7)
};