HTMLTemplateElement innerHTML output bugfix (cjs, esm)

--browser result--
const f = document.createDocumentFragment();
const d = document.createElement('div')
d.innerHTML='<a>aaa</a>';
f.append(d);
const t = document.createElement('template');
t.content.append(f);
console.log(t.innerHTML); // '<div><a>aaa</a></div>'
console.log(t.innerText); //''

--linkedom--
console.log(t.innerHTML); // ''
console.log(t.innerText); //''

After appending the child element to the HTML Template Element's content
If you do innerHTML, it is normal to output the contents of the child element, but it is not output in linkedom.

bugfix

Author: visualkhh

cjs/html/template-element.js

@@ -5,6 +5,8 @@ const {registerHTMLClass} = require('../shared/register-html-class.js');
 
 const {HTMLElement} = require('./element.js');
 
+import {getInnerHtml} from '../mixin/inner-html.js'
+
 const tagName = 'template';
 
 /**
@@ -17,6 +19,10 @@ class HTMLTemplateElement extends HTMLElement {
     (this[CONTENT] = content)[PRIVATE] = this;
   }
 
+  get innerHTML() {
+    return getInnerHtml(this.content);
+  }
+
   get content() {
     if (this.hasChildNodes() && !this[CONTENT].hasChildNodes()) {
       for (const node of this.childNodes)

esm/html/template-element.js

@@ -4,6 +4,8 @@ import {registerHTMLClass} from '../shared/register-html-class.js';
 
 import {HTMLElement} from './element.js';
 
+import {getInnerHtml} from '../mixin/inner-html.js'
+
 const tagName = 'template';
 
 /**
@@ -16,6 +18,10 @@ class HTMLTemplateElement extends HTMLElement {
     (this[CONTENT] = content)[PRIVATE] = this;
   }
 
+  get innerHTML() {
+    return getInnerHtml(this.content);
+  }
+
   get content() {
     if (this.hasChildNodes() && !this[CONTENT].hasChildNodes()) {
       for (const node of this.childNodes)