Convert frontend code to typescript (#31559)

None of the frontend js/ts files was touched besides these two commands
(edit: no longer true, I touched one file in
https://github.com/go-gitea/gitea/pull/31559/commits/61105d0618e285d97e95044bfb64415f364a4526
because of a deprecation that was not showing before the rename).

`tsc` currently reports 778 errors, so I have disabled it in CI as
planned.

Everything appears to work fine.

1 files changed, 28 insertions, 0 deletions

diff --git a/web_src/js/modules/fomantic/modal.ts b/web_src/js/modules/fomantic/modal.ts
new file mode 100644
index 0000000000..8b455cf4de
--- /dev/null
+++ b/web_src/js/modules/fomantic/modal.ts
@@ -0,0 +1,28 @@
+import $ from 'jquery';
+
+const fomanticModalFn = $.fn.modal;
+
+// use our own `$.fn.modal` to patch Fomantic's modal module
+export function initAriaModalPatch() {
+  if ($.fn.modal === ariaModalFn) throw new Error('initAriaModalPatch could only be called once');
+  $.fn.modal = ariaModalFn;
+  ariaModalFn.settings = fomanticModalFn.settings;
+}
+
+// the patched `$.fn.modal` modal function
+// * it does the one-time attaching on the first call
+function ariaModalFn(...args) {
+  const ret = fomanticModalFn.apply(this, args);
+  if (args[0] === 'show' || args[0]?.autoShow) {
+    for (const el of this) {
+      // If there is a form in the modal, there might be a "cancel" button before "ok" button (all buttons are "type=submit" by default).
+      // In such case, the "Enter" key will trigger the "cancel" button instead of "ok" button, then the dialog will be closed.
+      // It breaks the user experience - the "Enter" key should confirm the dialog and submit the form.
+      // So, all "cancel" buttons without "[type]" must be marked as "type=button".
+      for (const button of el.querySelectorAll('form button.cancel:not([type])')) {
+        button.setAttribute('type', 'button');
+      }
+    }
+  }
+  return ret;
+}