chore: add logging

src/arrow-backend.ts

@@ -21,8 +21,8 @@ export class ArrowBackend extends ParquetBackend {
       try {
         const module = await import("parquet-reader");
         this.readParquet_ = module.readParquet;
-      } catch (_) {
-        throw new Error('cannot find prebuilt arrow module, either build the module or use another backend');
+      } catch (error) {
+        throw new Error(`cannot find prebuilt arrow module, either build the module or use another backend: ${error}`);
       }
     }
     this.readParquet_(path, stream);

src/parquet-backend-factory.ts

@@ -1,9 +1,11 @@
 import { ArrowBackend } from './arrow-backend';
 import { BackendName } from './backend-name';
+import { getLogger } from './logger';
 import { ParquetToolsBackend } from './parquet-tools-backend';
 import { ParquetsBackend } from './parquets-backend';
 
 export function createParquetBackend(backend: BackendName) {
+  getLogger().info(`using ${backend} backend`);
   switch (backend) {
     case 'parquet-tools':
       return new ParquetToolsBackend;