Function ReactElement

lib/assets/react-source/development/react.js:1061–1113

(type, key, ref, self, source, owner, props)

	var ReactElement = function (type, key, ref, self, source, owner, props) {
	  var element = {
	    // This tag allows us to uniquely identify this as a React Element
	    $$typeof: REACT_ELEMENT_TYPE,
	    // Built-in properties that belong on the element
	    type: type,
	    key: key,
	    ref: ref,
	    props: props,
	    // Record the component responsible for creating this element.
	    _owner: owner
	  };

	  {
	    // The validation flag is currently mutative. We put it on
	    // an external backing store so that we can freeze the whole object.
	    // This can be replaced with a WeakMap once they are implemented in
	    // commonly used development environments.
	    element._store = {}; // To make comparing ReactElements easier for testing purposes, we make
	    // the validation flag non-enumerable (where possible, which should
	    // include every environment we run tests in), so the test framework
	    // ignores it.

	    Object.defineProperty(element._store, 'validated', {
	      configurable: false,
	      enumerable: false,
	      writable: true,
	      value: false
	    }); // self and source are DEV only properties.

	    Object.defineProperty(element, '_self', {
	      configurable: false,
	      enumerable: false,
	      writable: false,
	      value: self
	    }); // Two elements created in two different places should be considered
	    // equal for testing purposes and therefore we hide it from enumeration.

	    Object.defineProperty(element, '_source', {
	      configurable: false,
	      enumerable: false,
	      writable: false,
	      value: source
	    });

	    if (Object.freeze) {
	      Object.freeze(element.props);
	      Object.freeze(element);
	    }
	  }

	  return element;
	};
	/**
	 * Create and return a new ReactElement of the given type.
	 * See https://reactjs.org/docs/react-api.html#createelement