JSFiddle - React, Tailwind, and code Playground

by Glutamat

JavaScript

var util = {
        enforceSignature: function enforcesSignature(options, args, fn) { //This is mainly a debug validation function may be replaced by a simpler one. If you pass a functin, its parameters get parsed and outputted on a mismatch.
            var params, i, l, j, k, res;

            res = true;


            for (i = 0, l = options.length; i < l; i++) {
                var types = options[i] = Array.isArray(options[i]) ? options[i] : [options[i]];
                var mismatch = true;
                for (j = 0, k = types.length; j < k; j++) {
                    if ((args[i] && args[i].constructor === types[j]) || (types[j] === args[i])) {
                        mismatch = false;
                        break;
                    }
                }
                if (mismatch) {
                    res = false;
                    break;
                }
            }
            j--;

            if (!res) {
                var err = [
                i >= 0 ? i : "?",
                options[i][j] && (options[i][j].name || "asd"),
                args[i] && args[i].constructor && args[i].constructor.name || '"' + args[i] + '"'];

                if ("function" === typeof fn) {
                    params = ("" + fn).match(/\((.*)\)/)[1].split(",");
                    err.push(params[i] || "unknown");

                    throw new TypeError("Type mismatch on " + fn.name + " " + err[0] + " (" + err[1] + "). Expected " + err[2] + ", got " + err[3] + " instead");
                } else {
                    throw new TypeError("Type mismatch on parameter" + err[1] + ". Expected " + err[2] + ", got " + err[3] + " instead");
                }
            }

            return true;
        },
        formatString: function() {
            var args, str, i;

            i = 0;

            args = Array.prototype.slice.call(arguments);
            str = args.shift();
            str = str.replace(/%s/g, function() {
                return args[i++];
...