diff --git a/react-packager/src/Resolver/polyfills/Array.prototype.es6.js b/react-packager/src/Resolver/polyfills/Array.prototype.es6.js index 2752aab5..7e2078f8 100644 --- a/react-packager/src/Resolver/polyfills/Array.prototype.es6.js +++ b/react-packager/src/Resolver/polyfills/Array.prototype.es6.js @@ -53,3 +53,39 @@ if (!Array.prototype.find) { } }); } + +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes +if (!Array.prototype.includes) { + Object.defineProperty(Array.prototype, 'includes', { + enumerable: false, + writable: true, + configurable: true, + value: function (searchElement) { + var O = Object(this); + var len = parseInt(O.length) || 0; + if (len === 0) { + return false; + } + var n = parseInt(arguments[1]) || 0; + var k; + if (n >= 0) { + k = n; + } else { + k = len + n; + if (k < 0) { + k = 0; + } + } + var currentElement; + while (k < len) { + currentElement = O[k]; + if (searchElement === currentElement || + (searchElement !== searchElement && currentElement !== currentElement)) { + return true; + } + k++; + } + return false; + } + }); +}