mirror of
https://github.com/facebook/react.git
synced 2025-11-01 09:12:30 +00:00
Brian Vaughn
36cab2720a
* DevTools console override handles new component stack format DevTools does not attempt to mimic the default browser console format for its component stacks but it does properly detect the new format for Chrome, Firefox, and Safari.
74 lines
2.8 KiB
JavaScript
74 lines
2.8 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its 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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* @flow
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*/
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// ATTENTION
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// When adding new symbols to this file,
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// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
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// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
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// nor polyfill, then a plain number is used for performance.
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export let REACT_ELEMENT_TYPE = 0xeac7;
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export let REACT_PORTAL_TYPE = 0xeaca;
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export let REACT_FRAGMENT_TYPE = 0xeacb;
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export let REACT_STRICT_MODE_TYPE = 0xeacc;
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export let REACT_PROFILER_TYPE = 0xead2;
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export let REACT_PROVIDER_TYPE = 0xeacd;
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export let REACT_CONTEXT_TYPE = 0xeace;
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export let REACT_FORWARD_REF_TYPE = 0xead0;
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export let REACT_SUSPENSE_TYPE = 0xead1;
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export let REACT_SUSPENSE_LIST_TYPE = 0xead8;
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export let REACT_MEMO_TYPE = 0xead3;
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export let REACT_LAZY_TYPE = 0xead4;
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export let REACT_BLOCK_TYPE = 0xead9;
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export let REACT_SERVER_BLOCK_TYPE = 0xeada;
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export let REACT_FUNDAMENTAL_TYPE = 0xead5;
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export let REACT_RESPONDER_TYPE = 0xead6;
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export let REACT_SCOPE_TYPE = 0xead7;
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export let REACT_OPAQUE_ID_TYPE = 0xeae0;
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export let REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
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if (typeof Symbol === 'function' && Symbol.for) {
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const symbolFor = Symbol.for;
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REACT_ELEMENT_TYPE = symbolFor('react.element');
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REACT_PORTAL_TYPE = symbolFor('react.portal');
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REACT_FRAGMENT_TYPE = symbolFor('react.fragment');
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REACT_STRICT_MODE_TYPE = symbolFor('react.strict_mode');
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REACT_PROFILER_TYPE = symbolFor('react.profiler');
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REACT_PROVIDER_TYPE = symbolFor('react.provider');
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REACT_CONTEXT_TYPE = symbolFor('react.context');
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REACT_FORWARD_REF_TYPE = symbolFor('react.forward_ref');
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REACT_SUSPENSE_TYPE = symbolFor('react.suspense');
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REACT_SUSPENSE_LIST_TYPE = symbolFor('react.suspense_list');
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REACT_MEMO_TYPE = symbolFor('react.memo');
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REACT_LAZY_TYPE = symbolFor('react.lazy');
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REACT_BLOCK_TYPE = symbolFor('react.block');
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REACT_SERVER_BLOCK_TYPE = symbolFor('react.server.block');
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REACT_FUNDAMENTAL_TYPE = symbolFor('react.fundamental');
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REACT_RESPONDER_TYPE = symbolFor('react.responder');
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REACT_SCOPE_TYPE = symbolFor('react.scope');
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REACT_OPAQUE_ID_TYPE = symbolFor('react.opaque.id');
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REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
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}
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const MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
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const FAUX_ITERATOR_SYMBOL = '@@iterator';
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export function getIteratorFn(maybeIterable: ?any): ?() => ?Iterator<*> {
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if (maybeIterable === null || typeof maybeIterable !== 'object') {
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return null;
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}
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const maybeIterator =
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(MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) ||
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maybeIterable[FAUX_ITERATOR_SYMBOL];
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if (typeof maybeIterator === 'function') {
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return maybeIterator;
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}
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return null;
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}
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