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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at
callback interface ObserverCallback {
undefined handleEvent(FetchObserver observer);
enum FetchState {
// Pending states
"requesting", "responding",
// Final states
"aborted", "errored", "complete"
interface FetchObserver : EventTarget {
readonly attribute FetchState state;
// Events
attribute EventHandler onstatechange;
attribute EventHandler onrequestprogress;
attribute EventHandler onresponseprogress;