fix: napi_is_buffer(Uint8Array) should return true (#129)

* fix: napi_is_buffer(Uint8Array) should return `true`

* fix: napi_get_buffer_info should handle DataView

Author: toyobayashi

packages/emnapi/src/value/convert2c.ts

@@ -166,6 +166,9 @@ export function napi_get_buffer_info (
   $CHECK_ARG!(envObject, buffer)
   const handle = emnapiCtx.handleStore.get(buffer)!
   $RETURN_STATUS_IF_FALSE!(envObject, handle.isBuffer(emnapiCtx.feature.Buffer), napi_status.napi_invalid_arg)
+  if (handle.isDataView()) {
+    return napi_get_dataview_info(env, buffer, length, data, 0, 0)
+  }
   return napi_get_typedarray_info(env, buffer, 0, length, data, 0, 0)
 }
 

packages/runtime/src/Handle.ts

@@ -48,6 +48,7 @@ export class Handle<S> {
   }
 
   public isBuffer (BufferConstructor?: BufferCtor): boolean {
+    if (ArrayBuffer.isView(this.value)) return true
     BufferConstructor ??= _Buffer
     return typeof BufferConstructor === 'function' && BufferConstructor.isBuffer(this.value)
   }