--- /dev/null
+/*!
+ * array-slice <https://github.com/jonschlinkert/array-slice>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+module.exports = function slice(arr, start, end) {
+ var len = arr.length >>> 0;
+ var range = [];
+
+ start = idx(arr, start);
+ end = idx(arr, end, len);
+
+ while (start < end) {
+ range.push(arr[start++]);
+ }
+ return range;
+};
+
+
+function idx(arr, pos, end) {
+ var len = arr.length >>> 0;
+
+ if (pos == null) {
+ pos = end || 0;
+ } else if (pos < 0) {
+ pos = Math.max(len + pos, 0);
+ } else {
+ pos = Math.min(pos, len);
+ }
+
+ return pos;
+}
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