@material-ui/utils/es/HTMLElementType.js

Material-UI Utils - Utility functions for Material-UI.

export default function HTMLElementType(props, propName, componentName, location, propFullName) {
  if (process.env.NODE_ENV === 'production') {
    return null;
  }

  const propValue = props[propName];
  const safePropName = propFullName || propName;

  if (propValue == null) {
    return null;
  }

  if (propValue && propValue.nodeType !== 1) {
    return new Error(`Invalid ${location} \`${safePropName}\` supplied to \`${componentName}\`. ` + `Expected an HTMLElement.`);
  }

  return null;
}