SingleFile/lib/single-file-extension-editor-init.js

(function () {
	'use strict';

	/* global document */

	(() => {

		document.currentScript.remove();
		processNode(document);

		function processNode(node) {
			node.querySelectorAll("template[shadowrootmode]").forEach(element => {
				let shadowRoot = element.parentElement.shadowRoot;
				if (!shadowRoot) {
					try {
						shadowRoot = element.parentElement.attachShadow({
							mode: element.getAttribute("shadowrootmode")
						});
						shadowRoot.innerHTML = element.innerHTML;
						element.remove();
					} catch (error) {
						// ignored
					}
					if (shadowRoot) {
						processNode(shadowRoot);
					}
				}
			});
		}

	})();

})();