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/utils/urls.ts

@@ -0,0 +1,46 @@
+import { parseDomain } from "@shared/utils/domains";
+
+export function isInternalUrl(href: string) {
+  if (href[0] === "/") return true;
+  const outline = parseDomain(window.location.href);
+  const parsed = parseDomain(href);
+
+  if (
+    parsed &&
+    outline &&
+    parsed.subdomain === outline.subdomain &&
+    parsed.domain === outline.domain &&
+    parsed.tld === outline.tld
+  ) {
+    return true;
+  }
+
+  return false;
+}
+
+export function isHash(href: string) {
+  if (href[0] === "#") return true;
+
+  try {
+    const outline = new URL(window.location.href);
+    const parsed = new URL(href);
+
+    if (
+      outline.hostname === parsed.hostname &&
+      outline.pathname === parsed.pathname &&
+      !!parsed.hash
+    ) {
+      return true;
+    }
+  } catch (e) {
+    // failed to parse as url
+  }
+
+  return false;
+}
+
+export function decodeURIComponentSafe(text: string) {
+  return text
+    ? decodeURIComponent(text.replace(/%(?![0-9][0-9a-fA-F]+)/g, "%25"))
+    : text;
+}