feat(dev): add this.fs support (#20301)

Author: sapphi-red

package.json

@@ -65,7 +65,7 @@
  "picocolors": "^1.1.1",
  "playwright-chromium": "^1.54.1",
  "prettier": "3.6.2",
- "rollup": "^4.40.0",
+ "rollup": "^4.43.0",
  "simple-git-hooks": "^2.13.0",
  "tsx": "^4.20.3",
  "typescript": "~5.7.2",

packages/vite/package.json

@@ -85,7 +85,7 @@
  "fdir": "^6.4.6",
  "picomatch": "^4.0.3",
  "postcss": "^8.5.6",
- "rollup": "^4.40.0",
+ "rollup": "^4.43.0",
  "tinyglobby": "^0.2.14"
  },
  "optionalDependencies": {

packages/vite/src/node/__tests__/plugins/hooks.spec.ts

@@ -330,4 +330,18 @@ describe('supports plugin context', () => {
  },
  })
  })
+
+ test('this.fs is supported in dev', async () => {
+ expect.hasAssertions()
+
+ const server = await createServerWithPlugin({
+ name: 'test',
+ resolveId(id) {
+ if (id !== ENTRY_ID) return
+ expect(this.fs.readFile).toBeTypeOf('function')
+ },
+ })
+ await server.transformRequest(ENTRY_ID)
+ await server.close()
+ })
 })

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

@@ -30,6 +30,7 @@ SOFTWARE.
 */
 
 import fs from 'node:fs'
+import fsp from 'node:fs/promises'
 import { join } from 'node:path'
 import { performance } from 'node:perf_hooks'
 import { parseAst as rollupParseAst } from 'rollup/parseAst'
@@ -50,6 +51,7 @@ import type {
  PluginContextMeta,
  ResolvedId,
  RollupError,
+ RollupFsModule,
  RollupLog,
  MinimalPluginContext as RollupMinimalPluginContext,
  PluginContext as RollupPluginContext,
@@ -617,6 +619,22 @@ class MinimalPluginContext<T extends Environment = Environment>
  }
 }
 
+const fsModule: RollupFsModule = {
+ appendFile: fsp.appendFile,
+ copyFile: fsp.copyFile,
+ mkdir: fsp.mkdir as RollupFsModule['mkdir'],
+ mkdtemp: fsp.mkdtemp,
+ readdir: fsp.readdir,
+ readFile: fsp.readFile as RollupFsModule['readFile'],
+ realpath: fsp.realpath,
+ rename: fsp.rename,
+ rmdir: fsp.rmdir,
+ stat: fsp.stat,
+ lstat: fsp.lstat,
+ unlink: fsp.unlink,
+ writeFile: fsp.writeFile,
+}
+
 class PluginContext
  extends MinimalPluginContext
  implements Omit<RollupPluginContext, 'cache'>
@@ -635,6 +653,8 @@ class PluginContext
  super(_container.minimalContext.meta, _container.environment)
  }
 
+ fs = fsModule
+
  parse(code: string, opts: any) {
  return rollupParseAst(code, opts)
  }