import PropTypes from 'prop-types'; import chainPropTypes from './chainPropTypes'; function isClassComponent(elementType) { // elementType.prototype?.isReactComponent const { prototype = {} } = elementType; return Boolean(prototype.isReactComponent); } function acceptingRef(props, propName, componentName, location, propFullName) { const element = props[propName]; const safePropName = propFullName || propName; if (element == null) { return null; } let warningHint; const elementType = element.type; /** * Blacklisting instead of whitelisting * * Blacklisting will miss some components, such as React.Fragment. Those will at least * trigger a warning in React. * We can't whitelist because there is no safe way to detect React.forwardRef * or class components. "Safe" means there's no public API. * */ if (typeof elementType === 'function' && !isClassComponent(elementType)) { warningHint = 'Did you accidentally use a plain function component for an element instead?'; } if (warningHint !== undefined) { return new Error(`Invalid ${location} \`${safePropName}\` supplied to \`${componentName}\`. ` + `Expected an element that can hold a ref. ${warningHint} ` + 'For more information see https://material-ui.com/r/caveat-with-refs-guide'); } return null; } const elementAcceptingRef = chainPropTypes(PropTypes.element, acceptingRef); elementAcceptingRef.isRequired = chainPropTypes(PropTypes.element.isRequired, acceptingRef); export default elementAcceptingRef;