Modernize codebase

- Use ES modules
- Remove vendored libs and build them from npm using esbuild
- Switch from JSZip to zip.js

1 files changed, 4 insertions, 5 deletions

diff --git a/ext/js/dom/text-source-element.js b/ext/js/dom/text-source-element.js
index e37a3582..95534975 100644
--- a/ext/js/dom/text-source-element.js
+++ b/ext/js/dom/text-source-element.js
@@ -16,16 +16,15 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-/* global
- * DocumentUtil
- * StringUtil
- */
+import {StringUtil} from '../data/sandbox/string-util.js';
+import {DocumentUtil} from './document-util.js';
+import {TextSourceRange} from './text-source-range.js';
 
 /**
  * This class represents a text source that is attached to a HTML element, such as an <img>
  * with alt text or a <button>.
  */
-class TextSourceElement {
+export class TextSourceElement {
     /**
      * Creates a new instance of the class.
      * @param {Element} element The source element.