Switch to using @farcaster/frame-node for webhook parsing & validation

src/lib/neynar.ts

@@ -1,34 +0,0 @@
-const apiKey = process.env.NEYNAR_API_KEY || "";
-
-export async function isSignerValid({
-  fid,
-  signerPublicKey,
-}: {
-  fid: number;
-  signerPublicKey: string;
-}): Promise<boolean> {
-  const url = new URL("https://hub-api.neynar.com/v1/onChainSignersByFid");
-  url.searchParams.append("fid", fid.toString());
-
-  const response = await fetch(url, {
-    method: "GET",
-    headers: {
-      "x-api-key": apiKey,
-    },
-  });
-
-  if (response.status !== 200) {
-    throw new Error(await response.text());
-  }
-
-  const responseJson = await response.json();
-  const signerPublicKeyLC = signerPublicKey.toLowerCase();
-
-  const signerExists = responseJson.events.find(
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    (event: any) =>
-      event.signerEventBody.key.toLowerCase() === signerPublicKeyLC
-  );
-
-  return signerExists;
-}