microjungle JsonML to DocumentFragment

Based on https://github.com/deepsweet/microjungle by Kir Belevich

ეს სკრიპტი არ უნდა იყოს პირდაპირ დაინსტალირებული. ეს ბიბლიოთეკაა, სხვა სკრიპტებისთვის უნდა ჩართეთ მეტა-დირექტივაში // @require https://update.greasyfork.org/scripts/25520/241821/microjungle%20JsonML%20to%20DocumentFragment.js.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        microjungle JsonML to DocumentFragment
// @description Based on https://github.com/deepsweet/microjungle by Kir Belevich
// @namespace   https://greasyfork.org/en/users/447-spooky-donkey
// @ecmaVersion 6
// @version     3
// @grant       none
// ==/UserScript==

/*exported MicrojungleJsonMLtoDocumentFragment*/
const MicrojungleJsonMLtoDocumentFragment = function () {
	"use strict";
	return function frag(template, target = document.createDocumentFragment()) {
		if (!Array.isArray(template)) {
			return target;
		}
		const stringOrFinite = a => typeof a === "string" ||
			(typeof a === "number" && isFinite(a));
		function createElement(item, s = item[1]) {
			const elem = document.createElement(item.shift());
			if (!!s && s.constructor === Object) {
				const attrList = item.shift();
				Object.entries(attrList).forEach(([attrName, attrValue]) => {
					if (stringOrFinite(attrValue)) {
						elem.setAttribute(attrName, attrValue);
					}
				});
			}
			target.appendChild(frag(item, elem));
		}
		template.forEach(item => {
			if (stringOrFinite(item)) {
				target.appendChild(document.createTextNode(item));
			} else if (item) {
				if (typeof item[0] === "string") {
					createElement(item);
				} else if (item.nodeType) {
					target.appendChild(item);
				} else {
					frag(item, target);
				}
			}
		});
		return target;
	};
};