Updating errors and information on the edge runtime

docs/advanced-features/react-18/switchable-runtime.md

@@ -8,19 +8,6 @@ Next.js has two **server runtimes** where you can render parts of your applicati
 
 By default, Next.js uses the Node.js runtime. [Middleware](https://nextjs.org/docs/advanced-features/middleware) and [Edge API Routes](https://nextjs.org/docs/api-routes/edge-api-routes) use the Edge runtime.
 
-## Global Runtime Option
-
-To configure the runtime for your whole application, you can set the experimental option `runtime` in your `next.config.js` file:
-
-```js
-// next.config.js
-module.exports = {
-  experimental: {
-    runtime: 'experimental-edge', // 'node.js' (default) | experimental-edge
-  },
-}
-```
-
 You can detect which runtime you're using by looking at the `process.env.NEXT_RUNTIME` Environment Variable during runtime, and examining the `options.nextRuntime` variable during compilation.
 
 ## Page Runtime Option
@@ -38,22 +25,21 @@ export const config = {
 }
 ```
 
-When both the per-page runtime and global runtime are set, the per-page runtime overrides the global runtime. If the per-page runtime is _not_ set, the global runtime option will be used.
-
 ## Runtime Differences
 
-|                                                                                                                                                     | Node (Server) | Node (Serverless) | Edge             |
-| --------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- | ----------------- | ---------------- |
-| [Cold Boot](https://vercel.com/docs/concepts/get-started/compute#cold-and-hot-boots?utm_source=next-site&utm_medium=docs&utm_campaign=next-website) | /             | ~250ms            | Instant          |
-| HTTP Streaming                                                                                                                                      | Yes           | Yes               | Yes              |
-| IO                                                                                                                                                  | All           | All               | `fetch`          |
-| Scalability                                                                                                                                         | /             | High              | Highest          |
-| Security                                                                                                                                            | Normal        | High              | High             |
-| Latency                                                                                                                                             | Normal        | Low               | Lowest           |
-| Code Size                                                                                                                                           | /             | 50MB              | 1MB              |
-| NPM Packages                                                                                                                                        | All           | All               | A smaller subset |
-
-Next.js' default runtime configuration is good for most use cases, but there’re still many reasons to change to one runtime over the other one.
+|                                                                                                                                                     | Node (Server) | Node (Serverless) | Edge                                                     |
+| --------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- | ----------------- | -------------------------------------------------------- |
+| Name                                                                                                                                                | `nodejs`      | `nodejs`          | `edge` or `experimental-edge` if using Next.js Rendering |
+| [Cold Boot](https://vercel.com/docs/concepts/get-started/compute#cold-and-hot-boots?utm_source=next-site&utm_medium=docs&utm_campaign=next-website) | /             | ~250ms            | Instant                                                  |
+| HTTP Streaming                                                                                                                                      | Yes           | Yes               | Yes                                                      |
+| IO                                                                                                                                                  | All           | All               | `fetch`                                                  |
+| Scalability                                                                                                                                         | /             | High              | Highest                                                  |
+| Security                                                                                                                                            | Normal        | High              | High                                                     |
+| Latency                                                                                                                                             | Normal        | Low               | Lowest                                                   |
+| Code Size                                                                                                                                           | /             | 50MB              | 1MB                                                      |
+| NPM Packages                                                                                                                                        | All           | All               | A smaller subset                                         |
+
+Next.js' default runtime configuration is good for most use cases, but there are still many reasons to change to one runtime over the other one.
 
 For example, for API routes that rely on native Node.js APIs, they need to run with the Node.js Runtime. However, if an API only uses something like cookie-based authentication, using Middleware and the Edge Runtime will be a better choice due to its lower latency as well as better scalability.
 

docs/api-routes/edge-api-routes.md

@@ -131,4 +131,6 @@ Edge API Routes use the [Edge Runtime](/docs/api-reference/edge-runtime.md), whe
 
 Edge API Routes can [stream responses](/docs/api-reference/edge-runtime.md#web-stream-apis) from the server and run _after_ cached files (e.g. HTML, CSS, JavaScript) have been accessed. Server-side streaming can help improve performance with faster [Time To First Byte (TTFB)](https://web.dev/ttfb/).
 
+> Note: Using [Edge Runtime](/docs/api-reference/edge-runtime.md) with `getServerSideProps` does not give you access to the response object. If you need access to `res`, you should use the [Node.js runtime](/docs/advanced-features/react-18/switchable-runtime.md) by setting `runtime: 'nodejs'`.
+
 View the [supported APIs](/docs/api-reference/edge-runtime.md) and [unsupported APIs](/docs/api-reference/edge-runtime.md#unsupported-apis) for the Edge Runtime.

docs/basic-features/data-fetching/get-server-side-props.md

@@ -45,6 +45,18 @@ It can be tempting to reach for an [API Route](/docs/api-routes/introduction.md)
 
 Take the following example. An API route is used to fetch some data from a CMS. That API route is then called directly from `getServerSideProps`. This produces an additional call, reducing performance. Instead, directly import the logic used inside your API Route into `getServerSideProps`. This could mean calling a CMS, database, or other API directly from inside `getServerSideProps`.
 
+### getServerSideProps with Edge API Routes
+
+`getServerSideProps` can be used with both Serverless and Edge Runtimes, and you can set props in both. However, currently in Edge Runtime, you do not have access to the response object. This means that you cannot — for example — add cookies in `getServerSideProps`. To have access to the response object, you should continue to use the Serverless runtime, which is the default runtime.
+
+You can set the runtime on a [per-page basis](https://nextjs.org/docs/advanced-features/react-18/switchable-runtime#page-runtime-option) by modifying the `config`, for example:
+
+```
+export const config = {
+  runtime: 'nodejs'
+}
+```
+
 ## Fetching data on the client side
 
 If your page contains frequently updating data, and you don’t need to pre-render the data, you can fetch the data on the [client side](/docs/basic-features/data-fetching/client-side.md). An example of this is user-specific data:

docs/basic-features/data-fetching/incremental-static-regeneration.md

@@ -27,7 +27,7 @@ description: 'Learn how to create or update static pages at runtime with Increme
 
 Next.js allows you to create or update static pages _after_ you’ve built your site. Incremental Static Regeneration (ISR) enables you to use static-generation on a per-page basis, **without needing to rebuild the entire site**. With ISR, you can retain the benefits of static while scaling to millions of pages.
 
-> Note: the `experimental-edge` runtime (https://nextjs.org/docs/api-reference/edge-runtime) is currently not compatible with ISR although can leverage `stale-while-revalidate` by setting the `cache-control` header manually.
+> Note: the [`experimental-edge` runtime](https://nextjs.org/docs/api-reference/edge-runtime) is currently not compatible with ISR although can leverage `stale-while-revalidate` by setting the `cache-control` header manually.
 
 To use ISR, add the `revalidate` prop to `getStaticProps`:
 

errors/returning-response-body-in-middleware.md

@@ -1,5 +1,7 @@
 # Returning response body in Middleware
 
+> Note: In Next.js v13.0.0 you can now respond to middleware directly by returning a `NextResponse`. For more information, see [Producing a Response](https://nextjs.org/docs/advanced-features/middleware#producing-a-response).
+
 #### Why This Error Occurred
 
 [Middleware](https://nextjs.org/docs/advanced-features/middleware) can no longer produce a response body as of `v12.2+`.