From d298014070d7298573222a17a917da802ae3cd0d Mon Sep 17 00:00:00 2001
From: Brad Cornes <hello@bradley.dev>
Date: Mon, 25 Jul 2022 16:28:54 +0100
Subject: [PATCH] Support `require.extensions` mutations (#583)

---
 .../src/util/resolveFrom.ts                    | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/packages/tailwindcss-language-server/src/util/resolveFrom.ts b/packages/tailwindcss-language-server/src/util/resolveFrom.ts
index 5c13995..b390fd4 100644
--- a/packages/tailwindcss-language-server/src/util/resolveFrom.ts
+++ b/packages/tailwindcss-language-server/src/util/resolveFrom.ts
@@ -1,5 +1,9 @@
 import * as fs from 'fs'
 import { CachedInputFileSystem, ResolverFactory, Resolver, ResolveOptions } from 'enhanced-resolve'
+import { equal } from 'tailwindcss-language-service/src/util/array'
+
+let pnpApi: any
+let extensions = Object.keys(require.extensions)
 
 function createResolver(options: Partial<ResolveOptions> = {}): Resolver {
   return ResolverFactory.createResolver({
@@ -7,18 +11,28 @@ function createResolver(options: Partial<ResolveOptions> = {}): Resolver {
     useSyncFileSystemCalls: true,
     // cachePredicate: () => false,
     conditionNames: ['node', 'require'],
+    extensions,
+    pnpApi,
     ...options,
   })
 }
 
 let resolver = createResolver()
 
-export function setPnpApi(pnpApi: any): void {
-  resolver = createResolver({ pnpApi })
+export function setPnpApi(newPnpApi: any): void {
+  pnpApi = newPnpApi
+  resolver = createResolver()
 }
 
 export default function resolveFrom(from?: string, id?: string): string {
   if (id.startsWith('\\\\')) return id
+
+  let newExtensions = Object.keys(require.extensions)
+  if (!equal(newExtensions, extensions)) {
+    extensions = newExtensions
+    resolver = createResolver()
+  }
+
   let result = resolver.resolveSync({}, from, id)
   if (result === false) throw Error()
   // https://github.com/webpack/enhanced-resolve/issues/282