// false -> Array#indexOf
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// true -> Array#includes
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var toIObject = require('./_to-iobject');
|
var toLength = require('./_to-length');
|
var toAbsoluteIndex = require('./_to-absolute-index');
|
module.exports = function (IS_INCLUDES) {
|
return function ($this, el, fromIndex) {
|
var O = toIObject($this);
|
var length = toLength(O.length);
|
var index = toAbsoluteIndex(fromIndex, length);
|
var value;
|
// Array#includes uses SameValueZero equality algorithm
|
// eslint-disable-next-line no-self-compare
|
if (IS_INCLUDES && el != el) while (length > index) {
|
value = O[index++];
|
// eslint-disable-next-line no-self-compare
|
if (value != value) return true;
|
// Array#indexOf ignores holes, Array#includes - not
|
} else for (;length > index; index++) if (IS_INCLUDES || index in O) {
|
if (O[index] === el) return IS_INCLUDES || index || 0;
|
} return !IS_INCLUDES && -1;
|
};
|
};
|
