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/**
* We extend Math.random() during builds and revalidates to ensure that prerenders don't observe randomness
* When cacheComponents is enabled. randomness is a form of IO even though it resolves synchronously. When cacheComponents is
* enabled we need to ensure that randomness is excluded from prerenders.
*
* The extensions here never error nor alter the random generation itself and thus should be transparent to callers.
*/
import { io } from './utils'
const expression = '`Math.random()`'
try {
const _random = Math.random
Math.random = function random() {
io(expression, 'random')
return _random.apply(null, arguments as any)
// We bind here to alter the `toString` printing to match `Math.random`'s native `toString`.
// eslint-disable-next-line no-extra-bind
}.bind(null)
Object.defineProperty(Math.random, 'name', { value: 'random' })
} catch {
console.error(
`Failed to install ${expression} extension. When using \`experimental.cacheComponents\` calling this function will not correctly trigger dynamic behavior.`
)
}
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