mirror of
https://github.com/zebrajr/react.git
synced 2025-12-06 12:20:20 +01:00
70 lines
2.5 KiB
JavaScript
70 lines
2.5 KiB
JavaScript
/**
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @flow
|
|
*/
|
|
|
|
import {renameElementSymbol} from 'shared/ReactFeatureFlags';
|
|
|
|
// ATTENTION
|
|
// When adding new symbols to this file,
|
|
// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
|
|
|
|
// The Symbol used to tag the ReactElement-like types.
|
|
export const REACT_LEGACY_ELEMENT_TYPE: symbol = Symbol.for('react.element');
|
|
export const REACT_ELEMENT_TYPE: symbol = renameElementSymbol
|
|
? Symbol.for('react.transitional.element')
|
|
: REACT_LEGACY_ELEMENT_TYPE;
|
|
export const REACT_PORTAL_TYPE: symbol = Symbol.for('react.portal');
|
|
export const REACT_FRAGMENT_TYPE: symbol = Symbol.for('react.fragment');
|
|
export const REACT_STRICT_MODE_TYPE: symbol = Symbol.for('react.strict_mode');
|
|
export const REACT_PROFILER_TYPE: symbol = Symbol.for('react.profiler');
|
|
export const REACT_CONSUMER_TYPE: symbol = Symbol.for('react.consumer');
|
|
export const REACT_CONTEXT_TYPE: symbol = Symbol.for('react.context');
|
|
export const REACT_FORWARD_REF_TYPE: symbol = Symbol.for('react.forward_ref');
|
|
export const REACT_SUSPENSE_TYPE: symbol = Symbol.for('react.suspense');
|
|
export const REACT_SUSPENSE_LIST_TYPE: symbol = Symbol.for(
|
|
'react.suspense_list',
|
|
);
|
|
export const REACT_MEMO_TYPE: symbol = Symbol.for('react.memo');
|
|
export const REACT_LAZY_TYPE: symbol = Symbol.for('react.lazy');
|
|
export const REACT_SCOPE_TYPE: symbol = Symbol.for('react.scope');
|
|
export const REACT_ACTIVITY_TYPE: symbol = Symbol.for('react.activity');
|
|
export const REACT_LEGACY_HIDDEN_TYPE: symbol = Symbol.for(
|
|
'react.legacy_hidden',
|
|
);
|
|
export const REACT_TRACING_MARKER_TYPE: symbol = Symbol.for(
|
|
'react.tracing_marker',
|
|
);
|
|
|
|
export const REACT_MEMO_CACHE_SENTINEL: symbol = Symbol.for(
|
|
'react.memo_cache_sentinel',
|
|
);
|
|
|
|
export const REACT_POSTPONE_TYPE: symbol = Symbol.for('react.postpone');
|
|
|
|
export const REACT_VIEW_TRANSITION_TYPE: symbol = Symbol.for(
|
|
'react.view_transition',
|
|
);
|
|
|
|
const MAYBE_ITERATOR_SYMBOL = Symbol.iterator;
|
|
const FAUX_ITERATOR_SYMBOL = '@@iterator';
|
|
|
|
export function getIteratorFn(maybeIterable: ?any): ?() => ?Iterator<any> {
|
|
if (maybeIterable === null || typeof maybeIterable !== 'object') {
|
|
return null;
|
|
}
|
|
const maybeIterator =
|
|
(MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) ||
|
|
maybeIterable[FAUX_ITERATOR_SYMBOL];
|
|
if (typeof maybeIterator === 'function') {
|
|
return maybeIterator;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
export const ASYNC_ITERATOR = Symbol.asyncIterator;
|