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/routes/auth/providers/index.ts

@@ -0,0 +1,39 @@
+import { signin } from "@shared/utils/routeHelpers";
+import { requireDirectory } from "@server/utils/fs";
+
+// @ts-expect-error ts-migrate(7034) FIXME: Variable 'providers' implicitly has type 'any[]' i... Remove this comment to see the full error message
+const providers = [];
+
+requireDirectory(__dirname).forEach(([module, id]) => {
+  // @ts-expect-error ts-migrate(2339) FIXME: Property 'config' does not exist on type 'unknown'... Remove this comment to see the full error message
+  const { config, default: router } = module;
+
+  if (id === "index") {
+    return;
+  }
+
+  if (!config) {
+    throw new Error(
+      `Auth providers must export a 'config' object, missing in ${id}`
+    );
+  }
+
+  if (!router || !router.routes) {
+    throw new Error(
+      `Default export of an auth provider must be a koa-router, missing in ${id}`
+    );
+  }
+
+  if (config && config.enabled) {
+    providers.push({
+      id,
+      name: config.name,
+      enabled: config.enabled,
+      authUrl: signin(id),
+      router: router,
+    });
+  }
+});
+
+// @ts-expect-error ts-migrate(7005) FIXME: Variable 'providers' implicitly has an 'any[]' typ... Remove this comment to see the full error message
+export default providers;