next
Version:
The React Framework
40 lines (39 loc) • 1.73 kB
JavaScript
/**
* We extend Web Crypto APIs during builds and revalidates to ensure that prerenders don't observe random bytes
* When dynamicIO is enabled. Random bytes are a form of IO even if they resolve synchronously. When dyanmicIO is
* enabled we need to ensure that random bytes are excluded from prerenders unless they are cached.
*
*
* The extensions here never error nor alter the underlying return values and thus should be transparent to callers.
*/ import { io } from './utils';
let webCrypto;
if (process.env.NEXT_RUNTIME === 'edge') {
webCrypto = crypto;
} else {
if (typeof crypto === 'undefined') {
webCrypto = require('node:crypto').webcrypto;
} else {
webCrypto = crypto;
}
}
const getRandomValuesExpression = '`crypto.getRandomValues()`';
try {
const _getRandomValues = webCrypto.getRandomValues;
webCrypto.getRandomValues = function getRandomValues() {
io(getRandomValuesExpression, 'crypto');
return _getRandomValues.apply(webCrypto, arguments);
};
} catch {
console.error(`Failed to install ${getRandomValuesExpression} extension. When using \`experimental.dynamicIO\` calling this function will not correctly trigger dynamic behavior.`);
}
const randomUUIDExpression = '`crypto.randomUUID()`';
try {
const _randomUUID = webCrypto.randomUUID;
webCrypto.randomUUID = function randomUUID() {
io(randomUUIDExpression, 'crypto');
return _randomUUID.apply(webCrypto, arguments);
};
} catch {
console.error(`Failed to install ${getRandomValuesExpression} extension. When using \`experimental.dynamicIO\` calling this function will not correctly trigger dynamic behavior.`);
}
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