Refactors getFirstQueryParam to separate file

1 files changed, 13 insertions, 0 deletions

diff --git a/api/_getFirstQueryParam.ts b/api/_getFirstQueryParam.ts
new file mode 100644
index 0000000..2073e7a
--- /dev/null
+++ b/api/_getFirstQueryParam.ts
@@ -0,0 +1,13 @@
+import type { VercelRequest } from '@vercel/node';
+
+export function getFirstQueryParam(key: string, query: VercelRequest['query']): string | null {
+  const value = query[key];
+  if (!value) {
+    return null;
+  }
+  if (typeof(value) === 'string') {
+    return value;
+  }
+  return value[0] as string;
+}
+