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node_modules/core-js/internals/array-iteration-from-last.js

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+'use strict';
+var bind = require('../internals/function-bind-context');
+var IndexedObject = require('../internals/indexed-object');
+var toObject = require('../internals/to-object');
+var lengthOfArrayLike = require('../internals/length-of-array-like');
+
+// `Array.prototype.{ findLast, findLastIndex }` methods implementation
+var createMethod = function (TYPE) {
+  var IS_FIND_LAST_INDEX = TYPE == 1;
+  return function ($this, callbackfn, that) {
+    var O = toObject($this);
+    var self = IndexedObject(O);
+    var boundFunction = bind(callbackfn, that);
+    var index = lengthOfArrayLike(self);
+    var value, result;
+    while (index-- > 0) {
+      value = self[index];
+      result = boundFunction(value, index, O);
+      if (result) switch (TYPE) {
+        case 0: return value; // findLast
+        case 1: return index; // findLastIndex
+      }
+    }
+    return IS_FIND_LAST_INDEX ? -1 : undefined;
+  };
+};
+
+module.exports = {
+  // `Array.prototype.findLast` method
+  // https://github.com/tc39/proposal-array-find-from-last
+  findLast: createMethod(0),
+  // `Array.prototype.findLastIndex` method
+  // https://github.com/tc39/proposal-array-find-from-last
+  findLastIndex: createMethod(1)
+};