tmp: test if getting next version earlier - at verification is feasible so we don't have to wait for serverless handler creation to grab next version

Author: pieh

Diff for: src/build/content/server.ts

@@ -306,6 +306,12 @@ export const copyNextDependencies = async (ctx: PluginContext): Promise<void> =>
       // exports map it still might be a problem in the future, so we are not breaking here
     }
 
+    if (nextVersion !== ctx.nextVersionFromVerification) {
+      ctx.failBuild(
+        `mismatched versions detected. Version found at verification is ${ctx.nextVersionFromVerification} but resolved version is ${nextVersion}.`,
+      )
+    }
+
     if (nextVersion) {
       verifyNextVersion(ctx, nextVersion)
 

Diff for: src/build/plugin-context.ts

@@ -43,6 +43,8 @@ export class PluginContext {
   pluginVersion: string
   utils: NetlifyPluginUtils
 
+  nextVersionFromVerification: string = 'n/a'
+
   private constants: NetlifyPluginConstants
   private packageJSON: { name: string; version: string } & Record<string, unknown>
 

Diff for: src/build/verification.ts

@@ -1,5 +1,7 @@
 import { existsSync } from 'node:fs'
+import { createRequire } from 'node:module'
 import { join } from 'node:path'
+import { join as posixJoin } from 'node:path/posix'
 
 import { satisfies } from 'semver'
 
@@ -47,6 +49,15 @@ export function verifyPublishDir(ctx: PluginContext) {
         `Your publish directory does not contain expected Next.js build output. Please make sure you are using Next.js version (${SUPPORTED_NEXT_VERSIONS})`,
       )
     }
+
+    try {
+      const serverHandlerRequire = createRequire(posixJoin(ctx.standaloneRootDir, ':internal:'))
+      const { version } = serverHandlerRequire('next/package.json')
+      ctx.nextVersionFromVerification = version
+      console.log({ version })
+    } catch (e) {
+      console.error('failed to grab next version', e)
+    }
   }
   if (ctx.buildConfig.output === 'export') {
     if (!ctx.exportDetail?.success) {