fix: give up detection

The current detection somehow works with docker+wsl2, but it does not work with wsl2.

packages/vite/src/node/build.ts

@@ -21,13 +21,12 @@ import commonjsPlugin from '@rollup/plugin-commonjs'
 import type { RollupCommonJSOptions } from 'types/commonjs'
 import type { RollupDynamicImportVarsOptions } from 'types/dynamicImportVars'
 import type { TransformOptions } from 'esbuild'
-import { detectWhetherChokidarWithDefaultOptionWorks, isWSL2 } from './watcher'
 import type { InlineConfig, ResolvedConfig } from './config'
 import { isDepsOptimizerEnabled, resolveConfig } from './config'
 import { buildReporterPlugin } from './plugins/reporter'
 import { buildEsbuildPlugin } from './plugins/esbuild'
 import { terserPlugin } from './plugins/terser'
-import { copyDir, emptyDir, lookupFile, normalizePath } from './utils'
+import { copyDir, emptyDir, isWSL2, lookupFile, normalizePath } from './utils'
 import { manifestPlugin } from './plugins/manifest'
 import type { Logger } from './logger'
 import { dataURIPlugin } from './plugins/dataUri'
@@ -515,22 +514,14 @@ async function doBuild(
       }
 
       if (isWSL2 && resolvedChokidarOptions.usePolling === undefined) {
-        detectWhetherChokidarWithDefaultOptionWorks(config.root).then(
-          ({ result, warning }) => {
-            if (result === false) {
-              config.logger.warn(
-                colors.yellow(
-                  colors.bold(`(!) `) +
-                    'Default file system watching is not working with your setup due to the limitation of WSL2. ' +
-                    'Rebuild will not happen.' +
-                    'More information: https://vitejs.dev/config/server-options.html#server-watch'
-                )
-              )
-            }
-            if (warning) {
-              config.logger.warn(colors.yellow(warning))
-            }
-          }
+        config.logger.warn(
+          colors.yellow(
+            colors.bold(`(!) `) +
+              'Default file system watching might not work with your setup due to the limitation of WSL2. ' +
+              'Rebuild will not happen when file system watching is not working. ' +
+              'To suppress this warning, set true or false to "build.watch.usePolling". ' +
+              'More information: https://vitejs.dev/config/server-options.html#server-watch'
+          )
         )
       }
 

packages/vite/src/node/server/index.ts

@@ -17,6 +17,7 @@ import type { InlineConfig, ResolvedConfig } from '../config'
 import { isDepsOptimizerEnabled, resolveConfig } from '../config'
 import {
   isParentDirectory,
+  isWSL2,
   mergeConfig,
   normalizePath,
   resolveHostname
@@ -37,7 +38,6 @@ import { CLIENT_DIR } from '../constants'
 import type { Logger } from '../logger'
 import { printCommonServerUrls } from '../logger'
 import { invalidatePackageData } from '../packages'
-import { detectWhetherChokidarWithDefaultOptionWorks, isWSL2 } from '../watcher'
 import type { PluginContainer } from './pluginContainer'
 import { createPluginContainer } from './pluginContainer'
 import type { WebSocketServer } from './ws'
@@ -298,22 +298,14 @@ export async function createServer(
   }
 
   if (isWSL2 && resolvedWatchOptions.usePolling === undefined) {
-    detectWhetherChokidarWithDefaultOptionWorks(root).then(
-      ({ result, warning }) => {
-        if (result === false) {
-          config.logger.warn(
-            colors.yellow(
-              colors.bold(`(!) `) +
-                'Default file system watching is not working with your setup due to the limitation of WSL2. ' +
-                'HMR and other features will not work. ' +
-                'More information: https://vitejs.dev/config/server-options.html#server-watch'
-            )
-          )
-        }
-        if (warning) {
-          config.logger.warn(colors.yellow(warning))
-        }
-      }
+    config.logger.warn(
+      colors.yellow(
+        colors.bold(`(!) `) +
+          'Default file system watching might not work with your setup due to the limitation of WSL2. ' +
+          'HMR and other features will not work when file system watching is not working. ' +
+          'To suppress this warning, set true or false to "server.watch.usePolling". ' +
+          'More information: https://vitejs.dev/config/server-options.html#server-watch'
+      )
     )
   }
 

packages/vite/src/node/utils.ts

@@ -1087,3 +1087,22 @@ export const isNonDriveRelativeAbsolutePath = (p: string): boolean => {
   if (!isWindows) return p.startsWith('/')
   return windowsDrivePathPrefixRE.test(p)
 }
+
+/**
+ * returns `true` for WSL2 including docker running on WSL2
+ *
+ * https://github.com/microsoft/WSL/issues/423#issuecomment-844418910
+ */
+export const isWSL2 = (() => {
+  const release = os.release()
+  // Example: `5.10.102.1-microsoft-standard-WSL2`
+  if (release.includes('WSL2')) {
+    // "Docker Desktop for Windows with WSL2 backend" and "Docker installed in WSL" comes here too
+    return true
+  }
+
+  // Windows Example: `10.0.19044`
+  // WSL1 Example: `4.4.0-19041-Microsoft`
+  // Docker Desktop for Windows with WSL2 backend Example: `5.10.76-linuxkit`
+  return false
+})()