`this.getModuleInfo().code` support in dev #19674

vladmiller · 2025-03-18T14:13:50Z

Describe the bug

I am building a plugin that prerenders static pages from markdown/react components.

I am programmatically setting the entrypoints, provide the resolveId and load hooks to load the content.

In the reproduction code you will see that I first load load.html file and then, when I load the load.html I am also trying to load some-code?proxy module and get it's code.

In the build mode it works fine. With the dev mode, the load for proxy does not return code.

While debugging, I have noticed that build mode goes directly to rollup, however, in dev mode there is a PluginContext instead.

I have pinpointed the execution to the load method inside of PluginContext. It loads the source-code, however, the last call to this.getModuleInfo does not return the code. And the resulting ModueInfo does not contain anything except id and empty meta.

Reproduction

https://github.com/vladmiller/vite-context-issue

Steps to reproduce

pnpm install

# Build works fine
pnpm vite build

# Dev
pnpm vite

# Navigate to http://localhost:5173/home

System Info

System:
    OS: macOS 15.3.2
    CPU: (8) arm64 Apple M2
    Memory: 476.53 MB / 24.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 23.3.0 - ~/.nvm/versions/node/v23.3.0/bin/node
    npm: 10.9.0 - ~/.nvm/versions/node/v23.3.0/bin/npm
    pnpm: 9.15.4 - ~/.nvm/versions/node/v23.3.0/bin/pnpm
  Browsers:
    Chrome: 133.0.6943.143
    Safari: 18.3.1
  npmPackages:
    vite: ^6.2.2 => 6.2.2

Used Package Manager

pnpm

Logs

Click to expand!

  vite:config config file loaded in 12.82ms +0ms
  vite:env loading env files: [
  vite:env   '/Users/johndoe/Projects/vite-context-issue/.env',
  vite:env   '/Users/johndoe/Projects/vite-context-issue/.env.local',
  vite:env   '/Users/johndoe/Projects/vite-context-issue/.env.development',
  vite:env   '/Users/johndoe/Projects/vite-context-issue/.env.development.local'
  vite:env ] +0ms
  vite:env env files loaded in 0.21ms +0ms
  vite:env using resolved env: {} +0ms
  vite:config using resolved config: {
  vite:config   plugins: [
  vite:config     'vite:optimized-deps',
  vite:config     'vite:watch-package-data',
  vite:config     'vite:pre-alias',
  vite:config     'alias',
  vite:config     'vite:modulepreload-polyfill',
  vite:config     'vite:resolve',
  vite:config     'vite:html-inline-proxy',
  vite:config     'vite:css',
  vite:config     'vite:esbuild',
  vite:config     'vite:json',
  vite:config     'vite:wasm-helper',
  vite:config     'vite:worker',
  vite:config     'vite:asset',
  vite:config     'vite-plugin-index-html',
  vite:config     'vite:wasm-fallback',
  vite:config     'vite:define',
  vite:config     'vite:css-post',
  vite:config     'vite:worker-import-meta-url',
  vite:config     'vite:asset-import-meta-url',
  vite:config     'vite:dynamic-import-vars',
  vite:config     'vite:import-glob',
  vite:config     'vite:client-inject',
  vite:config     'vite:css-analysis',
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  vite:config     cors: {
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  vite:config     warmup: { clientFiles: [], ssrFiles: [] },
  vite:config     middlewareMode: false,
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  vite:config       deny: [ '.env', '.env.*', '*.{crt,pem}', '**/.git/**' ],
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  vite:config     preTransformRequests: true,
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  vite:config         extensions: [ '.mjs', '.js', '.ts', '.jsx', '.tsx', '.json' ],
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  vite:config           {
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  vite:config         outDir: 'dist',
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  vite:config         cssCodeSplit: true,
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  vite:config         createEnvironment: [Function: createEnvironment],
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  vite:config   resolve: {
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  vite:config     extensions: [ '.mjs', '.js', '.ts', '.jsx', '.tsx', '.json' ],
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  vite:config       },
  vite:config       {
  vite:config         find: /^\/?@vite\/client/,
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  vite:config   configFile: '/Users/johndoe/Projects/vite-context-issue/vite.config.ts',
  vite:config   configFileDependencies: [ '/Users/johndoe/Projects/vite-context-issue/vite.config.ts' ],
  vite:config   inlineConfig: {
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  vite:config     mode: undefined,
  vite:config     configFile: undefined,
  vite:config     configLoader: undefined,
  vite:config     logLevel: undefined,
  vite:config     clearScreen: undefined,
  vite:config     server: { host: undefined },
  vite:config     forceOptimizeDeps: undefined
  vite:config   },
  vite:config   root: '/Users/johndoe/Projects/vite-context-issue',
  vite:config   base: '/',
  vite:config   decodedBase: '/',
  vite:config   rawBase: '/',
  vite:config   publicDir: '/Users/johndoe/Projects/vite-context-issue/public',
  vite:config   cacheDir: '/Users/johndoe/Projects/vite-context-issue/node_modules/.vite',
  vite:config   command: 'serve',
  vite:config   mode: 'development',
  vite:config   isWorker: false,
  vite:config   mainConfig: null,
  vite:config   bundleChain: [],
  vite:config   isProduction: false,
  vite:config   css: {
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  vite:config     devSourcemap: false,
  vite:config     lightningcss: undefined
  vite:config   },
  vite:config   json: { namedExports: true, stringify: 'auto' },
  vite:config   esbuild: { jsxDev: true },
  vite:config   builder: undefined,
  vite:config   preview: {
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  vite:config     strictPort: false,
  vite:config     host: undefined,
  vite:config     allowedHosts: [],
  vite:config     https: undefined,
  vite:config     open: false,
  vite:config     proxy: undefined,
  vite:config     cors: {
  vite:config       origin: /^https?:\/\/(?:(?:[^:]+\.)?localhost|127\.0\.0\.1|\[::1\])(?::\d+)?$/
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  vite:config     headers: {}
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  vite:config   envDir: '/Users/johndoe/Projects/vite-context-issue',
  vite:config   env: { BASE_URL: '/', MODE: 'development', DEV: true, PROD: false },
  vite:config   assetsInclude: [Function: assetsInclude],
  vite:config   logger: {
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  vite:config   packageCache: Map(1) {
  vite:config     'fnpd_/Users/johndoe/Projects/vite-context-issue' => {
  vite:config       dir: '/Users/johndoe/Projects/vite-context-issue',
  vite:config       data: {
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  vite:config         scripts: { test: 'echo "Error: no test specified" && exit 1' },
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  vite:config         packageManager: '[email protected]+sha512.b2dc20e2fc72b3e18848459b37359a32064663e5627a51e4c74b2c29dd8e8e0491483c3abb40789cfd578bf362fb6ba8261b05f0387d76792ed6e23ea3b1b6a0',
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  vite:config   future: undefined,
  vite:config   ssr: {
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  vite:config     optimizeDeps: {
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  vite:config       include: [],
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  vite:config       holdUntilCrawlEnd: true,
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  vite:config     resolve: {
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  vite:config   optimizeDeps: {
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  vite:config     esbuildOptions: { preserveSymlinks: false }
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  vite:config   dev: {
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  vite:config     sourcemap: { js: true },
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  vite:config   build: {
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  vite:config     polyfillModulePreload: true,
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  vite:config     outDir: 'dist',
  vite:config     assetsDir: 'assets',
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  vite:config     sourcemap: false,
  vite:config     terserOptions: {},
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  vite:config     commonjsOptions: { include: [ /node_modules/ ], extensions: [ '.js', '.cjs' ] },
  vite:config     dynamicImportVarsOptions: { warnOnError: true, exclude: [ /node_modules/ ] },
  vite:config     write: true,
  vite:config     emptyOutDir: null,
  vite:config     copyPublicDir: true,
  vite:config     manifest: false,
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  vite:config     ssrManifest: false,
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  vite:config     reportCompressedSize: true,
  vite:config     chunkSizeWarningLimit: 500,
  vite:config     watch: null,
  vite:config     cssCodeSplit: true,
  vite:config     minify: 'esbuild',
  vite:config     ssr: false,
  vite:config     emitAssets: false,
  vite:config     createEnvironment: [Function: createEnvironment],
  vite:config     cssTarget: [ 'es2020', 'edge88', 'firefox78', 'chrome87', 'safari14' ],
  vite:config     cssMinify: true
  vite:config   },
  vite:config   webSocketToken: 'M7nbqrIT8xPZ',
  vite:config   getSortedPlugins: [Function: getSortedPlugins],
  vite:config   getSortedPluginHooks: [Function: getSortedPluginHooks],
  vite:config   createResolver: [Function: createResolver],
  vite:config   fsDenyGlob: [Function: arrayMatcher],
  vite:config   safeModulePaths: Set(0) {},
  vite:config   additionalAllowedHosts: []
  vite:config } +5ms
(node:48844) ExperimentalWarning: CommonJS module /Users/johndoe/Projects/vite-context-issue/vite.config.ts is loading ES Module /Users/johndoe/Projects/vite-context-issue/node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/index.js using require().
Support for loading ES Module in require() is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
  vite:deps (client) Hash is consistent. Skipping. Use --force to override. +0ms
Port 5173 is in use, trying another one...

  VITE v6.2.2  ready in 82 ms

  ➜  Local:   http://localhost:5174/
  ➜  Network: use --host to expose
  ➜  press h + enter to show help
  vite:import-analysis 0.93ms [no imports] some-code?proxy +0ms
file:///Users/johndoe/Projects/vite-context-issue/node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/chunks/dep-B0fRCRkQ.js:47463
            throw Error(
                  ^

Error: [vite] The "code" property of ModuleInfo is not supported.
    at Object.get (file:///Users/johndoe/Projects/vite-context-issue/node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/chunks/dep-B0fRCRkQ.js:47463:19)
    at LoadPluginContext.load (/Users/johndoe/Projects/vite-context-issue/vite.config.ts:71:59)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async EnvironmentPluginContainer.load (file:///Users/johndoe/Projects/vite-context-issue/node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/chunks/dep-B0fRCRkQ.js:47621:22)
    at async /Users/johndoe/Projects/vite-context-issue/vite.config.ts:38:30

Node.js v23.3.0

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magne4000 · 2025-04-03T14:50:37Z

I stumbled upon the same issue.
I'd like to add that, in this case, in dev, the failing this.load only returns { id: '...' } (so no importedIdResolutions for instance).
I feel that this is more a bug than a nice-to-have.

vladmiller · 2025-04-03T14:58:09Z

@magne4000 I feel the same, as right now this prevents me from proceeding with the plugin development.

Vite team is working on RollDown, that should in theory replace Rollup/eslint combination with a single environment – which, I suspect, in turn will resolve all these incompatibility issues between build & dev environments.

Rolldown is already at v1.0.0-beta.6 and there is a Vite fork that already uses Rolldown: https://github.com/vitejs/rolldown-vite

It's still early, but I guess it's already possible to give it a test-run for smaller non-critical projects.

magne4000 · 2025-04-03T15:00:21Z

Related issue: #15411

magne4000 · 2025-04-04T13:41:19Z

sapphi-red response on this subject with some insights:

The first step of rolldown-vite is to swap rollup & esbuild with rolldown and to keep the dev side architecture as-is. So that won't help in terms of supporting this API. The second step is to try bundling in dev and that might help.
You may find the information in the module graph. server.moduleGraph.

But getting the information of the imported files beforehand would be quite difficult in the current architecture as Vite does not wait for the imported files to be processed before processing the current file.
https://vite.dev/guide/api-javascript.html#vitedevserver:~:text=INFO,during%20cold%20start
If you can move the logic to the runtime side, I'll recommend to do so for dev.

vladmiller added the pending triage label Mar 18, 2025

sapphi-red changed the title ~~Incompatibility between Rollup and ViteDevServer contexts~~ this.getModuleInfo().code support in dev Mar 19, 2025

sapphi-red added rollup plugin compat p2-nice-to-have Not breaking anything but nice to have (priority) labels Mar 19, 2025

github-actions bot removed the pending triage label Mar 19, 2025

OnlyWick linked a pull request Mar 30, 2025 that will close this issue

feat(pluginContainer): add support for this.getModuleInfo().code in dev #19752

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magne4000 mentioned this issue Apr 3, 2025

fix: data missing from moduleInfo.meta #7477

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`this.getModuleInfo().code` support in dev #19674

`this.getModuleInfo().code` support in dev #19674

vladmiller commented Mar 18, 2025 •

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magne4000 commented Apr 3, 2025 •

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vladmiller commented Apr 3, 2025

magne4000 commented Apr 3, 2025

magne4000 commented Apr 4, 2025

this.getModuleInfo().code support in dev #19674

this.getModuleInfo().code support in dev #19674

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vladmiller commented Mar 18, 2025 • edited Loading

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magne4000 commented Apr 3, 2025 • edited Loading

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magne4000 commented Apr 3, 2025

magne4000 commented Apr 4, 2025

`this.getModuleInfo().code` support in dev #19674

`this.getModuleInfo().code` support in dev #19674

vladmiller commented Mar 18, 2025 •

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magne4000 commented Apr 3, 2025 •

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