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Verify SSR fixture hydration #232

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Merged
infeng merged 1 commit into from
Aug 31, 2026
Merged

Verify SSR fixture hydration #232

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3 changes: 2 additions & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -10,10 +10,11 @@
"build": "webpack --config webpack.config.prop.js && npm run build:types",
"build:types": "node -e \"require('fs-extra').removeSync('lib')\" && tsc -p tsconfig.build.json",
"build:ssr": "npm --prefix ssr-test ci --ignore-scripts && npm --prefix ssr-test run build",
"check:ssr-hydration": "node scripts/check-ssr-hydration.js",
"check:package-export": "node scripts/check-package-export.js",
"build:analyze": "ANALYZE=true webpack --config webpack.config.prop.js",
"doc": "webpack --config webpack.config.doc.js",
"verify": "npm test -- --runInBand && npm run lint && npm run build && npm run check:package-export && npm run doc && npm run build:ssr && npm pack --dry-run",
"verify": "npm test -- --runInBand && npm run lint && npm run build && npm run check:package-export && npm run doc && npm run build:ssr && npm run check:ssr-hydration && npm pack --dry-run",
"pub": "npm publish",
"prepublishOnly": "npm run build",
"predeploy": "npm run doc",
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47 changes: 47 additions & 0 deletions scripts/check-ssr-hydration.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const { JSDOM } = require('jsdom');

const serverMarkup = [
'<!doctype html><html><body>',
'<div id="root"><div data-reactroot=""><button>open</button></div></div>',
'</body></html>',
].join('');
const dom = new JSDOM(serverMarkup, {
runScripts: 'outside-only',
url: 'http://127.0.0.1:8005/',
});

async function verifyHydration() {
dom.window.requestAnimationFrame = callback => dom.window.setTimeout(callback, 0);
dom.window.cancelAnimationFrame = id => dom.window.clearTimeout(id);

const bundlePath = path.join(__dirname, '..', 'ssr-test', 'client-dist', 'main.js');
dom.window.eval(fs.readFileSync(bundlePath, 'utf8'));

const openButton = dom.window.document.querySelector('#root button');
assert(openButton, 'The SSR fixture must preserve its server-rendered button during hydration');
assert.strictEqual(openButton.textContent, 'open');

openButton.dispatchEvent(new dom.window.MouseEvent('click', { bubbles: true }));
await new Promise(resolve => dom.window.setTimeout(resolve, 50));

assert.strictEqual(openButton.textContent, 'close', 'The hydrated fixture must respond to user input');
assert(
dom.window.document.querySelector('[aria-label="Close viewer"]'),
'The hydrated fixture must render the Viewer component'
);

console.log('SSR fixture hydrated and opened the Viewer component.');
}

verifyHydration()
.then(() => {
dom.window.close();
})
.catch(error => {
dom.window.close();
console.error(error);
process.exit(1);
});
2 changes: 1 addition & 1 deletion ssr-test/app.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
const React = require('react');
const Viewer = typeof window === 'undefined'
? () => null
: require('../dist/index').default;
: require('../dist/index');

function App () {
const [ visible, setVisible ] = React.useState(false);
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