--- /dev/null
+'use strict';
+var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
+var $findLastIndex = require('../internals/array-iteration-from-last').findLastIndex;
+
+var aTypedArray = ArrayBufferViewCore.aTypedArray;
+var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
+
+// `%TypedArray%.prototype.findLastIndex` method
+// https://github.com/tc39/proposal-array-find-from-last
+exportTypedArrayMethod('findLastIndex', function findLastIndex(predicate /* , thisArg */) {
+ return $findLastIndex(aTypedArray(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
+});