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

server/utils/domains.ts

@@ -0,0 +1,16 @@
+import { parseDomain, stripSubdomain } from "@shared/utils/domains";
+
+export function getCookieDomain(domain: string) {
+  return process.env.SUBDOMAINS_ENABLED === "true"
+    ? stripSubdomain(domain)
+    : domain;
+}
+
+export function isCustomDomain(hostname: string) {
+  const parsed = parseDomain(hostname);
+  // @ts-expect-error ts-migrate(2345) FIXME: Argument of type 'string | undefined' is not assig... Remove this comment to see the full error message
+  const main = parseDomain(process.env.URL);
+  return (
+    parsed && main && (main.domain !== parsed.domain || main.tld !== parsed.tld)
+  );
+}