39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow strict
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*/
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/**
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* IMPORTANT!!
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*
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* This module cannot import `ReactFabric` (directly or indirectly)
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* because it can be used by apps only using the legacy renderer.
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* In that case `nativeFabricUIManager` isn't defined and `ReactFabric` throws.
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*/
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export function isPublicInstance(maybeInstance: mixed): boolean {
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return (
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maybeInstance != null &&
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// TODO: implement a better check when the instance is defined in the React Native repository.
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(maybeInstance.__nativeTag != null ||
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// TODO: remove this check when syncing the new version of the renderer from React to React Native.
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isLegacyFabricInstance(maybeInstance))
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);
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}
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function isLegacyFabricInstance(maybeInstance: mixed): boolean {
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/* eslint-disable dot-notation */
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return (
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maybeInstance != null &&
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// $FlowExpectedError[incompatible-use]
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maybeInstance['_internalInstanceHandle'] != null &&
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maybeInstance['_internalInstanceHandle'].stateNode != null &&
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maybeInstance['_internalInstanceHandle'].stateNode.canonical != null
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);
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}
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