chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

app/menus/GroupMemberMenu.tsx

@@ -0,0 +1,37 @@
+import { observer } from "mobx-react";
+import * as React from "react";
+import { useTranslation } from "react-i18next";
+import { useMenuState } from "reakit/Menu";
+import ContextMenu from "~/components/ContextMenu";
+import OverflowMenuButton from "~/components/ContextMenu/OverflowMenuButton";
+import Template from "~/components/ContextMenu/Template";
+
+type Props = {
+  onRemove: () => void;
+};
+
+function GroupMemberMenu({ onRemove }: Props) {
+  const { t } = useTranslation();
+  const menu = useMenuState({
+    modal: true,
+  });
+  return (
+    <>
+      <OverflowMenuButton aria-label={t("Show menu")} {...menu} />
+      <ContextMenu {...menu} aria-label={t("Group member options")}>
+        <Template
+          {...menu}
+          items={[
+            {
+              type: "button",
+              title: t("Remove"),
+              onClick: onRemove,
+            },
+          ]}
+        />
+      </ContextMenu>
+    </>
+  );
+}
+
+export default observer(GroupMemberMenu);