feat(baoyu-url-to-markdown): vendor baoyu-fetch runtime

skills/baoyu-url-to-markdown/scripts/lib/adapters/index.ts

@@ -0,0 +1,29 @@
+import type { Adapter, AdapterInput } from "./types";
+import { genericAdapter } from "./generic";
+import { hnAdapter } from "./hn";
+import { xAdapter } from "./x";
+import { youtubeAdapter } from "./youtube";
+
+const adapters: Adapter[] = [xAdapter, youtubeAdapter, hnAdapter, genericAdapter];
+
+export function listAdapters(): Adapter[] {
+  return adapters;
+}
+
+export function resolveAdapter(input: AdapterInput, forcedName?: string): Adapter {
+  if (forcedName) {
+    const forced = adapters.find((adapter) => adapter.name === forcedName);
+    if (!forced) {
+      throw new Error(`Unknown adapter: ${forcedName}`);
+    }
+    return forced;
+  }
+
+  const matched = adapters.find((adapter) => adapter.match(input));
+  if (!matched) {
+    throw new Error("No adapter matched the URL");
+  }
+  return matched;
+}
+
+export { genericAdapter };