node_modules

1 files changed, 21 insertions, 0 deletions

diff --git a/node_modules/es5-ext/array/#/intersection.js b/node_modules/es5-ext/array/#/intersection.js
new file mode 100644
index 000000000..91261d5f8
--- /dev/null
+++ b/node_modules/es5-ext/array/#/intersection.js
@@ -0,0 +1,21 @@
+"use strict";
+
+var value    = require("../../object/valid-value")
+  , contains = require("./contains")
+  , byLength = require("./_compare-by-length")
+  , filter   = Array.prototype.filter
+  , push     = Array.prototype.push
+  , slice    = Array.prototype.slice;
+
+module.exports = function (/* …list*/) {
+	var lists;
+	if (!arguments.length) slice.call(this);
+	push.apply(lists = [this], arguments);
+	lists.forEach(value);
+	lists.sort(byLength);
+	return lists.reduce(function (list1, list2) {
+		return filter.call(list1, function (item) {
+			return contains.call(list2, item);
+		});
+	});
+};