es.array.reduce-right.js 1.2 KB

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  1. 'use strict';
  2. var $ = require('../internals/export');
  3. var $reduceRight = require('../internals/array-reduce').right;
  4. var arrayMethodIsStrict = require('../internals/array-method-is-strict');
  5. var arrayMethodUsesToLength = require('../internals/array-method-uses-to-length');
  6. var CHROME_VERSION = require('../internals/engine-v8-version');
  7. var IS_NODE = require('../internals/engine-is-node');
  8. var STRICT_METHOD = arrayMethodIsStrict('reduceRight');
  9. // For preventing possible almost infinite loop in non-standard implementations, test the forward version of the method
  10. var USES_TO_LENGTH = arrayMethodUsesToLength('reduce', { 1: 0 });
  11. // Chrome 80-82 has a critical bug
  12. // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
  13. var CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;
  14. // `Array.prototype.reduceRight` method
  15. // https://tc39.github.io/ecma262/#sec-array.prototype.reduceright
  16. $({ target: 'Array', proto: true, forced: !STRICT_METHOD || !USES_TO_LENGTH || CHROME_BUG }, {
  17. reduceRight: function reduceRight(callbackfn /* , initialValue */) {
  18. return $reduceRight(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
  19. }
  20. });