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* Move ReactFiberTreeReflection to react-reconciler/reflection #11659 * Use * for react-reconciler We don't know the latest local version, and release script currently doesn't bump deps automatically. * Remove unused field * Use CommonJS in entry point for consistency * Undo the CommonJS change I didn't realize it would break the build. * Record sizes * Remove reconciler fixtures They're unnecessary now that we run real tests on reconciler bundles.
react-test-renderer
This package provides an experimental React renderer that can be used to render React components to pure JavaScript objects, without depending on the DOM or a native mobile environment.
Essentially, this package makes it easy to grab a snapshot of the "DOM tree" rendered by a React DOM or React Native component without using a browser or jsdom.
Usage:
const ReactTestRenderer = require('react-test-renderer');
const renderer = ReactTestRenderer.create(
<Link page="https://www.facebook.com/">Facebook</Link>
);
console.log(renderer.toJSON());
// { type: 'a',
// props: { href: 'https://www.facebook.com/' },
// children: [ 'Facebook' ] }
You can also use Jest's snapshot testing feature to automatically save a copy of the JSON tree to a file and check in your tests that it hasn't changed: https://facebook.github.io/jest/blog/2016/07/27/jest-14.html.