download: fix nvm instructions (#7434)

Author: ljharb

apps/site/next-data/downloadSnippets.ts

@@ -8,11 +8,13 @@ import {
 import { availableLocaleCodes } from '@/next.locales.mjs';
 import type { DownloadSnippet } from '@/types';
 
-const getDownloadSnippets = (lang: string): Promise<Array<DownloadSnippet>> => {
+export default async function getDownloadSnippets(
+  lang: string
+): Promise<Array<DownloadSnippet>> {
   // Prevents attempting to retrieve data for an unsupported language as both the generator
   // and the API endpoint will simply return 404. And we want to prevent a 404 response.
-  if (availableLocaleCodes.includes(lang) === false) {
-    return Promise.resolve([]);
+  if (!availableLocaleCodes.includes(lang)) {
+    return [];
   }
 
   const IS_NOT_VERCEL_RUNTIME_ENV =
@@ -24,9 +26,10 @@ const getDownloadSnippets = (lang: string): Promise<Array<DownloadSnippet>> => {
   // the data directly within the current thread, which will anyways be loaded only once
   // We use lazy-imports to prevent `provideBlogData` from executing on import
   if (ENABLE_STATIC_EXPORT || IS_NOT_VERCEL_RUNTIME_ENV) {
-    return import('@/next-data/providers/downloadSnippets').then(
-      ({ default: provideDownloadSnippets }) => provideDownloadSnippets(lang)!
+    const { default: provideDownloadSnippets } = await import(
+      '@/next-data/providers/downloadSnippets'
     );
+    return provideDownloadSnippets(lang)!;
   }
 
   // Applies the language to the URL, since this content is actually localized
@@ -41,9 +44,6 @@ const getDownloadSnippets = (lang: string): Promise<Array<DownloadSnippet>> => {
   // outdated information being shown to the user.
   // Note: We do manual JSON.parse after response.text() to prevent React from throwing an Error
   // that does not provide a clear stack trace of which request is failing and what the JSON.parse error is
-  return fetch(fetchURL)
-    .then(response => response.text())
-    .then(JSON.parse);
-};
-
-export default getDownloadSnippets;
+  const response = await fetch(fetchURL);
+  return JSON.parse(await response.text());
+}

apps/site/next-data/generators/downloadSnippets.mjs

@@ -11,7 +11,7 @@ import { availableLocaleCodes } from '../../next.locales.mjs';
  * This method is used to generate the Node.js Website Download Snippets
  * for self-consumption during RSC and Static Builds
  */
-const generateDownloadSnippets = async () => {
+export default async function generateDownloadSnippets() {
   /**
    * This generates all the Download Snippets for each available Locale
    *
@@ -39,6 +39,4 @@ const generateDownloadSnippets = async () => {
   });
 
   return new Map(await Promise.all(downloadSnippets));
-};
-
-export default generateDownloadSnippets;
+}

apps/site/snippets/en/download/nvm.bash

@@ -1,6 +1,9 @@
 # Download and install nvm:
 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
 
+# in lieu of restarting the shell
+\. "$HOME/.nvm/nvm.sh"
+
 # Download and install Node.js:
 nvm install ${props.release.major}