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7a1691cdff
* Require deep for reconcilers * Delete inline* files * Delete react-reconciler/persistent This no longer makes any sense because it react-reconciler takes supportsMutation or supportsPersistence as options. It's no longer based on feature flags. * Fix jest mocking * Fix Flow strategy We now explicitly list which paths we want to be checked by a renderer. For every other renderer config we ignore those paths. Nothing is "any" typed. So if some transitive dependency isn't reachable it won't be accidentally "any" that leaks.
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.
Documentation:
https://reactjs.org/docs/test-renderer.html
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.