fix(asset): only watch existing files for new URL(, import.meta.url) (#20507)

Author: sapphi-red

packages/vite/src/node/plugins/assetImportMetaUrl.ts

@@ -9,6 +9,7 @@ import {
  isDataUrl,
  isParentDirectory,
  transformStableResult,
+ tryStatSync,
 } from '../utils'
 import { CLIENT_ENTRY } from '../constants'
 import { slash } from '../../shared/utils'
@@ -142,8 +143,11 @@ export function assetImportMetaUrlPlugin(config: ResolvedConfig): Plugin {
  const publicPath = '/' + path.posix.relative(publicDir, file)
  builtUrl = await fileToUrl(this, publicPath)
  } else {
- this.addWatchFile(file)
  builtUrl = await fileToUrl(this, file)
+ // during dev, builtUrl may point to a directory or a non-existing file
+ if (tryStatSync(file)?.isFile()) {
+ this.addWatchFile(file)
+ }
  }
  } catch {
  // do nothing, we'll log a warning after this