diff --git a/src/hyparquet.d.ts b/src/hyparquet.d.ts
index c258bfd..004c4da 100644
--- a/src/hyparquet.d.ts
+++ b/src/hyparquet.d.ts
@@ -15,3 +15,13 @@ export function parquetRead(arrayBuffer: ArrayBuffer): any[][]
  * @returns {FileMetaData} metadata object
  */
 export function parquetMetadata(arrayBuffer: ArrayBuffer): any
+
+/**
+ * Decompress snappy data.
+ * Accepts an output buffer to avoid allocating a new buffer for each call.
+ *
+ * @param {Uint8Array} inputArray compressed data
+ * @param {Uint8Array} outputArray output buffer
+ * @returns {boolean} true if successful
+ */
+export function snappyUncompress(inputArray: Uint8Array, outputArray: Uint8Array): boolean
diff --git a/src/hyparquet.js b/src/hyparquet.js
index a11437f..3f540fc 100644
--- a/src/hyparquet.js
+++ b/src/hyparquet.js
@@ -1,6 +1,9 @@
 import { parquetMetadata } from './metadata.js'
 export { parquetMetadata }
 
+import { snappyUncompress } from './snappy.js'
+export { snappyUncompress }
+
 /**
  * Read parquet data rows from a file
  *