chromium/src/third_party/blink/renderer/modules/native_io/native_io_file.idl

// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://github.com/fivedots/nativeio-explainer

[
  Exposed=(Window, Worker),
  RuntimeEnabled=StorageFoundationAPI,
  SecureContext
] interface NativeIOFile {
  [CallWith=ScriptState] Promise<void> close();

  [
    CallWith=ScriptState, RaisesException
  ] Promise<unsigned long long> getLength();

  [
    CallWith=ScriptState, RaisesException
  ] Promise<void> setLength(unsigned long long length);

  [
    CallWith=ScriptState, RaisesException, MeasureAs=StorageFoundationRead
  ] Promise<NativeIOReadResult> read(ArrayBufferView buffer,
                                     unsigned long long file_offset);
  [
    CallWith=ScriptState, RaisesException, MeasureAs=StorageFoundationWrite
  ] Promise<NativeIOWriteResult> write(ArrayBufferView buffer,
                                      unsigned long long file_offset);
  [
    CallWith=ScriptState, RaisesException, MeasureAs=StorageFoundationFlush
  ] Promise<void> flush();
};