From bd52283a70a1451a4ad6f058787b18382d306880 Mon Sep 17 00:00:00 2001
From: Eduard Kuzmenko <thanwords24@gmail.com>
Date: Mon, 4 Mar 2024 21:33:53 +0200
Subject: [PATCH] fix: analysing build chunk without dependencies (#15469)

Co-authored-by: patak <matias.capeletto@gmail.com>
---
 .../src/node/plugins/importAnalysisBuild.ts    | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/packages/vite/src/node/plugins/importAnalysisBuild.ts b/packages/vite/src/node/plugins/importAnalysisBuild.ts
index 2311f0859ef4d3..8779ef80f78e20 100644
--- a/packages/vite/src/node/plugins/importAnalysisBuild.ts
+++ b/packages/vite/src/node/plugins/importAnalysisBuild.ts
@@ -5,7 +5,7 @@ import type {
   ImportSpecifier,
 } from 'es-module-lexer'
 import { init, parse as parseImports } from 'es-module-lexer'
-import type { OutputChunk, SourceMap } from 'rollup'
+import type { SourceMap } from 'rollup'
 import type { RawSourceMap } from '@ampproject/remapping'
 import convertSourceMap from 'convert-source-map'
 import {
@@ -377,15 +377,17 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
                   if (filename === ownerFilename) return
                   if (analyzed.has(filename)) return
                   analyzed.add(filename)
-                  const chunk = bundle[filename] as OutputChunk | undefined
+                  const chunk = bundle[filename]
                   if (chunk) {
                     deps.add(chunk.fileName)
-                    chunk.imports.forEach(addDeps)
-                    // Ensure that the css imported by current chunk is loaded after the dependencies.
-                    // So the style of current chunk won't be overwritten unexpectedly.
-                    chunk.viteMetadata!.importedCss.forEach((file) => {
-                      deps.add(file)
-                    })
+                    if (chunk.type === 'chunk') {
+                      chunk.imports.forEach(addDeps)
+                      // Ensure that the css imported by current chunk is loaded after the dependencies.
+                      // So the style of current chunk won't be overwritten unexpectedly.
+                      chunk.viteMetadata!.importedCss.forEach((file) => {
+                        deps.add(file)
+                      })
+                    }
                   } else {
                     const removedPureCssFiles =
                       removedPureCssFilesCache.get(config)!