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reactUtils.js
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reactUtils.js
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import React from 'react';
/* eslint-disable no-underscore-dangle */
export const isCompositeComponent = type => typeof type === 'function';
export const isReloadableComponent = type => typeof type === 'function' || typeof type === 'object';
export const getComponentDisplayName = type => {
const displayName = type.displayName || type.name;
return displayName && displayName !== 'ReactComponent' ? displayName : 'Component';
};
export const reactLifeCycleMountMethods = ['componentWillMount', 'componentDidMount'];
export function isReactClass(Component) {
return !!(
Component.prototype &&
(React.Component.prototype.isPrototypeOf(Component.prototype) ||
// react 14 support
Component.prototype.isReactComponent ||
Component.prototype.componentWillMount ||
Component.prototype.componentWillUnmount ||
Component.prototype.componentDidMount ||
Component.prototype.componentDidUnmount ||
Component.prototype.render)
);
}
export function isReactClassInstance(Component) {
return Component && isReactClass({ prototype: Object.getPrototypeOf(Component) });
}
export const getInternalInstance = instance =>
instance._reactInternalFiber || // React 16
instance._reactInternalInstance || // React 15
null;
export const updateInstance = instance => {
const { updater, forceUpdate } = instance;
if (typeof forceUpdate === 'function') {
instance.forceUpdate();
} else if (updater && typeof updater.enqueueForceUpdate === 'function') {
updater.enqueueForceUpdate(instance);
}
};
export const isFragmentNode = ({ type }) => React.Fragment && type === React.Fragment;
const ContextType = React.createContext ? React.createContext() : null;
const ConsumerType = ContextType && ContextType.Consumer.$$typeof;
const ProviderType = ContextType && ContextType.Provider.$$typeof;
const MemoType = React.memo && React.memo(() => null).$$typeof;
const LazyType = React.lazy && React.lazy(() => null).$$typeof;
const ForwardType = React.forwardRef && React.forwardRef(() => null).$$typeof;
export const CONTEXT_CURRENT_VALUE = '_currentValue';
export const isContextConsumer = ({ type }) =>
type && typeof type === 'object' && '$$typeof' in type && type.$$typeof === ConsumerType && ConsumerType;
export const isContextProvider = ({ type }) =>
type && typeof type === 'object' && '$$typeof' in type && type.$$typeof === ProviderType && ProviderType;
export const isMemoType = ({ type }) =>
type && typeof type === 'object' && '$$typeof' in type && type.$$typeof === MemoType && MemoType;
export const isLazyType = ({ type }) =>
type && typeof type === 'object' && '$$typeof' in type && type.$$typeof === LazyType && LazyType;
export const isForwardType = ({ type }) =>
type && typeof type === 'object' && '$$typeof' in type && type.$$typeof === ForwardType && ForwardType;
export const isContextType = type => isContextConsumer(type) || isContextProvider(type);
export const getElementType = type => {
const element = { type };
if (isContextConsumer(element)) {
return 'Consumer';
}
if (isContextProvider(element)) {
return 'Provider';
}
if (isLazyType(element)) {
return 'Lazy';
}
if (isMemoType(element)) {
return 'Memo';
}
if (isForwardType(element)) {
return 'Forward';
}
if (isReactClass(type)) {
return 'Class';
}
if (typeof element === 'function') {
return 'FC';
}
return 'unknown';
};
export const getContextProvider = type => type && type._context;