/*** 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 {
REACT_CONTEXT_TYPE,
REACT_FORWARD_REF_TYPE,
REACT_FRAGMENT_TYPE,
REACT_PROFILER_TYPE,
REACT_PROVIDER_TYPE,
REACT_DEBUG_TRACING_MODE_TYPE,
REACT_STRICT_MODE_TYPE,
REACT_SUSPENSE_TYPE,
REACT_SUSPENSE_LIST_TYPE,
REACT_MEMO_TYPE,
REACT_LAZY_TYPE,
REACT_SCOPE_TYPE,
REACT_LEGACY_HIDDEN_TYPE,
REACT_OFFSCREEN_TYPE,
REACT_CACHE_TYPE,
REACT_TRACING_MARKER_TYPE,
} from 'shared/ReactSymbols';
import {
enableScopeAPI,
enableCacheElement,
enableTransitionTracing,
enableDebugTracing,
enableLegacyHidden,
} from './ReactFeatureFlags';
const REACT_CLIENT_REFERENCE: symbol = Symbol.for('react.client.reference');
export default function isValidElementType(type: mixed): boolean {
if (typeof type === 'string' || typeof type === 'function') {
return true;
}// Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill).
if (
type === REACT_FRAGMENT_TYPE ||
type === REACT_PROFILER_TYPE ||
(enableDebugTracing && type === REACT_DEBUG_TRACING_MODE_TYPE) ||
type === REACT_STRICT_MODE_TYPE ||
type === REACT_SUSPENSE_TYPE ||
type === REACT_SUSPENSE_LIST_TYPE ||
(enableLegacyHidden && type === REACT_LEGACY_HIDDEN_TYPE) ||
type === REACT_OFFSCREEN_TYPE ||
(enableScopeAPI && type === REACT_SCOPE_TYPE) ||
(enableCacheElement && type === REACT_CACHE_TYPE) ||
(enableTransitionTracing && type === REACT_TRACING_MARKER_TYPE)
) {return true;
}if (typeof type === 'object' && type !== null) {
if (
type.$$typeof === REACT_LAZY_TYPE ||
type.$$typeof === REACT_MEMO_TYPE ||
type.$$typeof === REACT_PROVIDER_TYPE ||
type.$$typeof === REACT_CONTEXT_TYPE ||
type.$$typeof === REACT_FORWARD_REF_TYPE ||
// This needs to include all possible module reference object
// types supported by any Flight configuration anywhere since
// we don't know which Flight build this will end up being used
// with.
type.$$typeof === REACT_CLIENT_REFERENCE ||
type.getModuleId !== undefined
) {return true;
}}return false;
}