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Wyatt JohnsonandGitHub 8abbb3dc2e refactor: rename experimental.dynamicIO to experimental.cacheComponents (#81562)
## What?

Rename `experimental.dynamicIO` to `experimental.cacheComponents` across
the Next.js codebase.

## Why?

We're going to be merging the functionality of the `ppr`, `dynamicIO`
and `useCache` experimental flags into the singular `cacheComponents`
flag to reduce complexity of the codebase and simplify adoption for
users wanting to experiment with experimental features.

## How?

- Renamed the configuration option from `experimental.dynamicIO` to
`experimental.cacheComponents`
- Added deprecation handling with automatic migration for the old option
name
- Updated all documentation, tests, and internal references
- Updated Rust code in SWC transforms and Turbopack
- Maintained backward compatibility with deprecation warnings

NAR-158
2025-07-17 19:30:28 -06:00

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TypeScript

import * as React from 'react'
// NOTE: this is not actually external by default, only in one test where we patch `next.config.js`
import { getMessagesAsync } from 'external-esm-pkg-with-async-import'
export default async function Page() {
const messages = await getMessagesAsync()
return (
<main>
<p>{messages.title}</p>
</main>
)
}