JSFiddle - React, Tailwind, and code Playground

by Glutamat

JavaScript

var merge = (function () {
    var initThis = this;
    return function () {
        var len = arguments.length - 1,
            srt, tmp;
        if ("function" === typeof arguments[arguments.length - 1]) srt = arguments[arguments.length - 1];
        else {
            srt = function (a, b, prop) {
                if (!prop) return a;
                return a[prop];
            };
            len++;
        }
        var merge = this === initThis ? {} : this;
        for (var i = 0; i < len; i++) inner(arguments[i], merge);

        function inner(obj2, obj1) {
            if (obj2 instanceof Array) {
                if (!obj1) obj1 = [];
                if (typeof obj1 != "object") obj1 = (tmp = srt(obj1, obj2, null), tmp) === obj2 ? [] : tmp;
                for (var i = 0; i < obj2.length; i++) if (!obj1[i] && typeof obj2[i] == "object") obj1[i] = inner(obj2[i]);
                    else if (obj1[i] && typeof obj2[i] == "object") obj1[i] = inner(obj2[i], obj1[i]);
                else if (obj1[i]) obj1[i] = srt(obj1, obj2, i) || obj1[i];
                else obj1[i] = obj2[i];
            } else if (obj2 instanceof Object) {
                if (!obj1) obj1 = {};
                if (typeof obj1 != "object") obj1 = (tmp = srt(obj1, obj2, null), tmp) === obj2 ? {} : tmp; //If obj2 is returned, set to empty obj to allow deep cloning
                for (var prop in obj2) {
                    var isObj = "object" === typeof obj2[prop];
                    if (!obj1[prop] && isObj) obj1[prop] = inner(obj2[prop]);
                    else if (obj1[prop] && isObj) obj1[prop] = inner(obj2[prop], obj1[prop]);
                    else if (obj1[prop]) obj1[prop] = srt(obj1, obj2, prop) || obj1[prop];
                    else obj1[prop] = obj2[prop];
                }
            } else {
                throw new SyntaxError ("expected " + obj2 + " to be of type object");
            }
            return obj1;
        }
        return merge;
    };
})();

project =...