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createAnimatedComponentInjection.js
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createAnimatedComponentInjection.js
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/**
* 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-local
* @format
*/
import * as React from 'react';
type createAnimatedComponent = <TProps: {...}, TInstance>(
Component: React.AbstractComponent<TProps, TInstance>,
) => React.AbstractComponent<TProps, TInstance>;
// This can be undefined, null, or the experimental implementation. If this is
// null, that means `createAnimatedComponent` has already been initialized and
// it is too late to call `inject`.
let injected: ?createAnimatedComponent;
/**
* Call during bundle initialization to opt-in to new `createAnimatedComponent`.
*/
export function inject(newInjected: createAnimatedComponent): void {
if (injected !== undefined) {
if (__DEV__) {
console.error(
'createAnimatedComponentInjection: ' +
(injected == null
? 'Must be called before `createAnimatedComponent`.'
: 'Cannot be called more than once.'),
);
}
return;
}
injected = newInjected;
}
/**
* Only called by `createAnimatedComponent.js`.
*/
export function recordAndRetrieve(): createAnimatedComponent | null {
if (injected === undefined) {
injected = null;
}
return injected;
}