Files
react/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
Andrew Clark 19092ac8c3 Re-add old Fabric Offscreen impl behind flag (#22018)
* Re-add old Fabric Offscreen impl behind flag

There's a chance that #21960 will affect layout in a way that we don't
expect, so I'm adding back the old implementation so we can toggle the
feature with a flag.

The flag should read from the ReactNativeFeatureFlags shim so that we
can change it at runtime. I'll do that separately.

* Import dynamic RN flags from external module

Internal feature flags that we wish to control with a GK can now be
imported from an external module, which I've called
"ReactNativeInternalFeatureFlags".

We'll need to add this module to the downstream repo.

We can't yet use this in our tests, because we don't have a test
configuration that runs against the React Native feature flags fork. We
should set up that up the same way we did for www.
2021-08-03 19:30:20 -07:00

30 lines
1.1 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict
*/
import typeof * as ExportsType from './ReactFeatureFlags.native-fb-dynamic';
import typeof * as DynamicFlagsType from 'ReactNativeInternalFeatureFlags';
// In xplat, these flags are controlled by GKs. Because most GKs have some
// population running in either mode, we should run our tests that way, too,
//
// Use __VARIANT__ to simulate a GK. The tests will be run twice: once
// with the __VARIANT__ set to `true`, and once set to `false`.
//
// TODO: __VARIANT__ isn't supported for React Native flags yet. You can set the
// flag here but it won't be set to `true` in any of our test runs. Need to
// update the test configuration.
export const enablePersistentOffscreenHostContainer = __VARIANT__;
// Flow magic to verify the exports of this file match the original version.
// eslint-disable-next-line no-unused-vars
type Check<_X, Y: _X, X: Y = _X> = null;
// eslint-disable-next-line no-unused-expressions
(null: Check<ExportsType, DynamicFlagsType>);