diff --git a/.eslintrc.json b/.eslintrc.json
index b0ffb24..8e481e9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -33,8 +33,10 @@
     "jsdoc/check-param-names": "error",
     "jsdoc/check-property-names": "error",
     "jsdoc/check-tag-names": "error",
-    "jsdoc/require-param-type": "warn",
-    "jsdoc/require-returns-type": "warn",
+    "jsdoc/require-param": "error",
+    "jsdoc/require-param-type": "error",
+    "jsdoc/require-returns": "error",
+    "jsdoc/require-returns-type": "error",
     "jsdoc/sort-tags": "error",
     "no-constant-condition": "off",
     "no-multi-spaces": "error",
diff --git a/src/hyparquet.ts b/src/hyparquet.ts
index 45a5869..a37c13a 100644
--- a/src/hyparquet.ts
+++ b/src/hyparquet.ts
@@ -3,8 +3,8 @@ import { parquetMetadata } from './metadata.js'
 /**
  * Read parquet data rows from a file
  *
- * @param arrayBuffer parquet file contents
- * @returns array of rows
+ * @param {ArrayBuffer} arrayBuffer parquet file contents
+ * @returns {any[][]} row data
  */
 export function parquetRead(arrayBuffer: ArrayBuffer): any[][] {
   const metadata = parquetMetadata(arrayBuffer)