function shim(props, propName, componentName, location, propFullName, secret) { if (secret === ReactPropTypesSecret) { // It is still safe when called from React. return; } var err = new Error( 'Calling PropTypes validators directly is not supported by the `prop-types` package. ' + 'Use PropTypes.checkPropTypes() to call them. ' + 'Read more at http://fb.me/use-check-prop-types' ); err.name = 'Invariant Violation'; throw err; }