--- /dev/null
+'use strict';
+var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
+var $indexOf = require('../internals/array-includes').indexOf;
+
+var aTypedArray = ArrayBufferViewCore.aTypedArray;
+var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
+
+// `%TypedArray%.prototype.indexOf` method
+// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.indexof
+exportTypedArrayMethod('indexOf', function indexOf(searchElement /* , fromIndex */) {
+ return $indexOf(aTypedArray(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
+});