Function validate

lib/assets/react-source/development/react-server.js:3978–3993

(props, propName, componentName, location, propFullName, secret)

	  function createPrimitiveTypeChecker(expectedType) {
	    function validate(props, propName, componentName, location, propFullName, secret) {
	      var propValue = props[propName];
	      var propType = getPropType(propValue);
	      if (propType !== expectedType) {
	        // `propValue` being instance of, say, date/regexp, pass the 'object'
	        // check, but we can offer a more precise error message here rather than
	        // 'of type `object`'.
	        var preciseType = getPreciseType(propValue);

	        return new PropTypeError(
	          'Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'),
	          {expectedType: expectedType}
	        );
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }