Fetch API

Some methods are working only with Dart 3.0, see compatibility_layer library for more info.

This package provides JavaScript bindings to Fetch API.


  • Full fetch options / request parameters coverage
  • Cancel requests via AbortController.
  • Read response
    • As text (String)
    • As Blob
    • As Stream of Uint8List
  • Response streaming
  • Request streaming (check compatibility)
  • Get access to redirect status
  • Support non-200 responses

Some notes about fetch and Request

fetch and Request have same options but different semantics, e.g. fetch's default mode is no-cors while Request is cors. Therefore options objects for this function and constructor made as different classes. For more info about that read MDN docs.


The Fetch API provides an interface for fetching resources (including across the network). It will seem familiar to anyone who has used XMLHttpRequest, but the new API provides a more powerful and flexible feature set.
Dart 2.19 compatibility layer.