fix(react-email): require Node 20.19 in the dev server runtime check (#3756)

Author: felipefreitag

.changeset/node-floor-runtime-check.md

@@ -0,0 +1,5 @@
+---
+"react-email": patch
+---
+
+The dev server now refuses to start on Node older than 20.19, which matches the package's declared minimum, and names the installed version in the error.

apps/docs/contributing/development-workflow/1-setup.mdx

@@ -8,7 +8,7 @@ description: 'Things you will need to do beforehand to setup the project'
 Before you can start developing, you will need to get the project setup.
 
 <Info>
-To contribute to the project, you must use **Node 18** or higher.
+To contribute to the project, you must use **Node 20.19** or higher.
 </Info>
 
 <Steps>

packages/react-email/src/cli/utils/preview/start-dev-server.ts

@@ -35,10 +35,10 @@ export const startDevServer = async (
   port: number,
   compatibilityClients?: string,
 ): Promise<http.Server> => {
-  const [majorNodeVersion] = process.versions.node.split('.');
-  if (majorNodeVersion && Number.parseInt(majorNodeVersion, 10) < 20) {
+  const [major = 0, minor = 0] = process.versions.node.split('.').map(Number);
+  if (major < 20 || (major === 20 && minor < 19)) {
     console.error(
-      ` ${logSymbols.error}  Node ${majorNodeVersion} is not supported. Please upgrade to Node 20 or higher.`,
+      ` ${logSymbols.error}  Node ${process.versions.node} is not supported. Please upgrade to Node 20.19 or higher.`,
     );
     process.exit(1);
   }

packages/react-email/src/cli/utils/style-text.ts

@@ -1,7 +1,5 @@
-/**
- * Centralized fallback for Node versions (<20.12.0) without util.styleText.
- * Returns the original text when styleText is unavailable.
- */
+// Node below 20.12 has no util.styleText. A static import of it would throw at
+// module load, before startDevServer can print its "upgrade Node" message.
 import * as nodeUtil from 'node:util';
 
 type StyleTextFunction = typeof nodeUtil.styleText;