diff options
Diffstat (limited to 'node_modules/core-js/modules/es.array.index-of.js')
| -rw-r--r-- | node_modules/core-js/modules/es.array.index-of.js | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/es.array.index-of.js b/node_modules/core-js/modules/es.array.index-of.js new file mode 100644 index 0000000..5a1442b --- /dev/null +++ b/node_modules/core-js/modules/es.array.index-of.js @@ -0,0 +1,22 @@ +'use strict'; +var $ = require('../internals/export'); +var $indexOf = require('../internals/array-includes').indexOf; +var arrayMethodIsStrict = require('../internals/array-method-is-strict'); +var arrayMethodUsesToLength = require('../internals/array-method-uses-to-length'); + +var nativeIndexOf = [].indexOf; + +var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0; +var STRICT_METHOD = arrayMethodIsStrict('indexOf'); +var USES_TO_LENGTH = arrayMethodUsesToLength('indexOf', { ACCESSORS: true, 1: 0 }); + +// `Array.prototype.indexOf` method +// https://tc39.github.io/ecma262/#sec-array.prototype.indexof +$({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || !STRICT_METHOD || !USES_TO_LENGTH }, { + indexOf: function indexOf(searchElement /* , fromIndex = 0 */) { + return NEGATIVE_ZERO + // convert -0 to +0 + ? nativeIndexOf.apply(this, arguments) || 0 + : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined); + } +}); |