mocker-data-generator/build/main/array-includes.js

A simplified way to generate mock data, builds using a simple schema and with the FakerJs

if (!Array.prototype.includes) {
    Object.defineProperty(Array.prototype, 'includes', {
        value: function (searchElement, fromIndex) {
            // 1. Let O be ? ToObject(this value).
            if (this == null) {
                throw new TypeError('"this" is null or not defined');
            }
            var o = Object(this);
            // 2. Let len be ? ToLength(? Get(O, "length")).
            var len = o.length >>> 0;
            // 3. If len is 0, return false.
            if (len === 0) {
                return false;
            }
            // 4. Let n be ? ToInteger(fromIndex).
            //    (If fromIndex is undefined, this step produces the value 0.)
            var n = fromIndex | 0;
            // 5. If n ≥ 0, then
            //  a. Let k be n.
            // 6. Else n < 0,
            //  a. Let k be len + n.
            //  b. If k < 0, let k be 0.
            var k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
            function sameValueZero(x, y) {
                return (x === y ||
                    (typeof x === 'number' &&
                        typeof y === 'number' &&
                        isNaN(x) &&
                        isNaN(y)));
            }
            // 7. Repeat, while k < len
            while (k < len) {
                // a. Let elementK be the result of ? Get(O, ! ToString(k)).
                // b. If SameValueZero(searchElement, elementK) is true, return true.
                // c. Increase k by 1.
                if (sameValueZero(o[k], searchElement)) {
                    return true;
                }
                k++;
            }
            // 8. Return false
            return false;
        }
    });
}