react-image-slideshow/src/utils/polyfill.js

A simple image slideshow components with react.js

const polyfill = () => {
    // polyfill to fit 'fill' method in Array
    if (!Array.prototype.fill) {
        Array.prototype.fill = function(value) {

            // Steps 1-2.
            if (this == null) {
                throw new TypeError('this is null or not defined');
            }

            var O = Object(this);

            // Steps 3-5.
            var len = O.length >>> 0; // parseInt(O.length)

            // Steps 6-7.
            var start = arguments[1];
            var relativeStart = start >> 0;

            // Step 8.
            var k = relativeStart < 0 ?
                Math.max(len + relativeStart, 0) :
                Math.min(relativeStart, len);

            // Steps 9-10.
            var end = arguments[2];
            var relativeEnd = end === undefined ?
                len :
            end >> 0;

            // Step 11.
            var final = relativeEnd < 0 ?
                Math.max(len + relativeEnd, 0) :
                Math.min(relativeEnd, len);

            // Step 12.
            while(k < final) {
                O[k] = value;
                k++;
            }

            // Step 13.
            return O;
        };
    }
};

export default polyfill;