From aa81f4b6e2f103dd727d891325a1d61dad7f1e35 Mon Sep 17 00:00:00 2001
From: Haoqun Jiang <haoqunjiang@gmail.com>
Date: Sat, 2 Apr 2022 22:16:49 +0800
Subject: [PATCH] fix(resolver): skip known ESM entries when resolving a
 `require` call

Fixes #7578
---
 packages/vite/src/node/constants.ts       | 15 +++++++++++++++
 packages/vite/src/node/plugins/resolve.ts |  6 ++++++
 2 files changed, 21 insertions(+)

diff --git a/packages/vite/src/node/constants.ts b/packages/vite/src/node/constants.ts
index 9612cd8c96460d..1741bf2dd7a94b 100644
--- a/packages/vite/src/node/constants.ts
+++ b/packages/vite/src/node/constants.ts
@@ -6,6 +6,21 @@ export const DEFAULT_MAIN_FIELDS = [
   'jsnext'
 ]
 
+/**
+ * A non-exhaustive list of known-to-be-ES-module entry names.
+ * From <https://github.com/stereobooster/package.json#package-bundlers>
+ */
+export const KNOWN_ESM_MAIN_FIELDS = [
+  'module',
+  'jsnext:main',
+  'jsnext',
+  'esnext',
+  'es2015',
+  'es2020',
+  'fesm2015',
+  'fesm2020'
+]
+
 export const DEFAULT_EXTENSIONS = [
   '.mjs',
   '.js',
diff --git a/packages/vite/src/node/plugins/resolve.ts b/packages/vite/src/node/plugins/resolve.ts
index 1b59503a9d43ed..10e2989af1114f 100644
--- a/packages/vite/src/node/plugins/resolve.ts
+++ b/packages/vite/src/node/plugins/resolve.ts
@@ -7,6 +7,7 @@ import {
   SPECIAL_QUERY_RE,
   DEFAULT_EXTENSIONS,
   DEFAULT_MAIN_FIELDS,
+  KNOWN_ESM_MAIN_FIELDS,
   OPTIMIZABLE_ENTRY_RE,
   DEP_VERSION_RE
 } from '../constants'
@@ -777,6 +778,11 @@ export function resolvePackageEntry(
 
     if (!entryPoint || entryPoint.endsWith('.mjs')) {
       for (const field of options.mainFields || DEFAULT_MAIN_FIELDS) {
+        // If the initiator is a `require` call, don't use the ESM entries
+        if (options.isRequire && KNOWN_ESM_MAIN_FIELDS.includes(field)) {
+          continue
+        }
+
         if (typeof data[field] === 'string') {
           entryPoint = data[field]
           break