1 files changed, 40 insertions, 0 deletions
diff --git a/node_modules/es5-ext/array/#/flatten.js b/node_modules/es5-ext/array/#/flatten.js
new file mode 100644
index 000000000..40167274e
--- /dev/null
+++ b/node_modules/es5-ext/array/#/flatten.js
@@ -0,0 +1,40 @@
+// Stack grow safe implementation
+
+"use strict";
+
+var ensureValue       = require("../../object/valid-value")
+  , isArray           = Array.isArray
+  , objHasOwnProperty = Object.prototype.hasOwnProperty;
+
+module.exports = function () {
+	var input = ensureValue(this), index = 0, remaining, remainingIndexes, length, i, result = [];
+	// Jslint: ignore
+	main: while (input) {
+		length = input.length;
+		for (i = index; i < length; ++i) {
+			if (!objHasOwnProperty.call(input, i)) continue;
+			if (isArray(input[i])) {
+				if (i < length - 1) {
+					// eslint-disable-next-line max-depth
+					if (!remaining) {
+						remaining = [];
+						remainingIndexes = [];
+					}
+					remaining.push(input);
+					remainingIndexes.push(i + 1);
+				}
+				input = input[i];
+				index = 0;
+				continue main;
+			}
+			result.push(input[i]);
+		}
+		if (remaining) {
+			input = remaining.pop();
+			index = remainingIndexes.pop();
+		} else {
+			input = null;
+		}
+	}
+	return result;
+};