Vite react build error: Unexpected "<"

myckhel commented 3 years ago

Describe the bug

Reproduction

Vite build error

yarn dev
yarn run v1.22.10
$ vite
 > resources/js/app.js:12:2: error: Unexpected "<"
    12 │   <App
       ╵   ^

error when starting dev server:
Error: Build failed with 1 error:
resources/js/app.js:12:2: error: Unexpected "<"
    at failureErrorWithLog (/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:1224:15)

    at buildResponseToResult (/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:936:32)
    at /Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:1035:20
    at /Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:568:9
    at handleIncomingPacket (/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:657:9)
    at Socket.readFromStdout (/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/esbuild/lib/main.js:535:7)
    at Socket.emit (events.js:315:20)
    at addChunk (internal/streams/readable.js:309:12)
    at readableAddChunk (internal/streams/readable.js:284:9)
    at Socket.Readable.push (internal/streams/readable.js:223:10)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

System Info

Output of npx envinfo --system --npmPackages vite,@vitejs/plugin-vue --binaries --browsers:

$ npx envinfo --system --npmPackages vite,@vitejs/plugin-vue --binaries --browsers
Need to install the following packages:
  envinfo
Ok to proceed? (y) y

  System:
    OS: macOS 10.15.7
    CPU: (4) x64 Intel(R) Core(TM) i5-4570S CPU @ 2.90GHz
    Memory: 1.01 GB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 14.15.4 - /usr/local/bin/node
    Yarn: 1.22.10 - /usr/local/bin/yarn
    npm: 7.5.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  Browsers:
    Chrome: 90.0.4430.85
    Safari: 14.0.2
  npmPackages:
    vite: ^2.2.1 => 2.2.1

Used package manager:

Logs

$ yarn dev --debug
yarn run v1.22.10
$ vite --debug
  vite:config bundled config file loaded in 981ms +0ms
[dotenv][DEBUG] did not match key and value when parsing line 6:
[dotenv][DEBUG] did not match key and value when parsing line 9:
[dotenv][DEBUG] did not match key and value when parsing line 16:
[dotenv][DEBUG] did not match key and value when parsing line 22:
[dotenv][DEBUG] did not match key and value when parsing line 24:
[dotenv][DEBUG] did not match key and value when parsing line 28:
[dotenv][DEBUG] did not match key and value when parsing line 37:
[dotenv][DEBUG] did not match key and value when parsing line 42:
[dotenv][DEBUG] did not match key and value when parsing line 47:
[dotenv][DEBUG] did not match key and value when parsing line 50:
[dotenv][DEBUG] did not match key and value when parsing line 52:
  vite:config using resolved config: {
  vite:config   base: '/',
  vite:config   publicDir: '/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/resources/static',
  vite:config   build: {
  vite:config     target: [ 'es2019', 'edge18', 'firefox60', 'chrome61', 'safari11' ],
  vite:config     polyfillDynamicImport: true,
  vite:config     outDir: 'public/build',
  vite:config     assetsDir: 'assets',
  vite:config     assetsInlineLimit: 4096,
  vite:config     cssCodeSplit: true,
  vite:config     sourcemap: false,
  vite:config     rollupOptions: { input: [Array] },
  vite:config     commonjsOptions: { include: [Array], extensions: [Array] },
  vite:config     minify: 'terser',
  vite:config     terserOptions: {},
  vite:config     cleanCssOptions: {},
  vite:config     write: true,
  vite:config     emptyOutDir: null,
  vite:config     manifest: true,
  vite:config     lib: false,
  vite:config     ssr: false,
  vite:config     ssrManifest: false,
  vite:config     brotliSize: true,
  vite:config     chunkSizeWarningLimit: 500,
  vite:config     watch: null
  vite:config   },
  vite:config   plugins: [
  vite:config     'vite:pre-alias',
  vite:config     'alias',
  vite:config     'vite:dynamic-import-polyfill',
  vite:config     'vite:resolve',
  vite:config     'vite:html',
  vite:config     'vite:css',
  vite:config     'vite:esbuild',
  vite:config     'vite:json',
  vite:config     'vite:wasm',
  vite:config     'vite:worker',
  vite:config     'vite:asset',
  vite:config     'vite:laravel',
  vite:config     'vite:define',
  vite:config     'vite:css-post',
  vite:config     'vite:client-inject',
  vite:config     'vite:import-analysis'
  vite:config   ],
  vite:config   resolve: { dedupe: undefined, alias: [ [Object], [Object] ] },
  vite:config   server: { host: 'localhost', https: false, port: 3000 },
  vite:config   configFile: '/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/vite.config.js',
  vite:config   configFileDependencies: [ 'vite.config.js' ],
  vite:config   inlineConfig: {
  vite:config     root: undefined,
  vite:config     base: undefined,
  vite:config     mode: undefined,
  vite:config     configFile: undefined,
  vite:config     logLevel: undefined,
  vite:config     clearScreen: undefined,
  vite:config     server: {}
  vite:config   },
  vite:config   root: '/Applications/XAMPP/xamppfiles/htdocs/chat-system-example',
  vite:config   cacheDir: '/Applications/XAMPP/xamppfiles/htdocs/chat-system-example/node_modules/.vite',
  vite:config   command: 'serve',
  vite:config   mode: 'development',
  vite:config   isProduction: false,
  vite:config   env: { BASE_URL: '/', MODE: 'development', DEV: true, PROD: false },
  vite:config   assetsInclude: [Function: assetsInclude],
  vite:config   logger: {
  vite:config     hasWarned: false,
  vite:config     info: [Function: info],
  vite:config     warn: [Function: warn],
  vite:config     error: [Function: error],
  vite:config     clearScreen: [Function: clearScreen]
  vite:config   },
  vite:config   createResolver: [Function: createResolver]
  vite:config } +6ms
  vite:deps Crawling dependencies using entries:
  vite:deps   /Applications/XAMPP/xamppfiles/htdocs/chat-system-example/resources/js/app.js
  vite:deps   /Applications/XAMPP/xamppfiles/htdocs/chat-system-example/resources/js/bootstrap.js +0ms
 > resources/js/app.js:12:2: error: Unexpected "<"
    12 │   <App
       ╵   ^

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[x] Read the docs.
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[x] Provide a description in this issue that describes the bug.
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Shinigami92 commented 3 years ago

Seems you are trying to use jsx in a js file (resources/js/app.js) This is not possible, due to that Vite assumes that js files contain only js valid syntax But jsx has another AST and therefore is only supported in jsx files

If my assumption is correct, please close the issue and use jsx as file extension

myckhel commented 3 years ago

Thank you for your response.

Error solved 👍🏽 .

ibejoeb commented 3 years ago

I have a vendor library, react-csv, that includes JSX in .js files. Naturally, I see the same class of error:

 > node_modules/react-csv/src/components/Link.js:110:6: error: Unexpected "<"
    110 │       <a

Is there any guidance for this situation, or is it really a non-starter?

superhos commented 3 years ago

Same issue. I have used jsx in .vue file. what's your solution? Thanks!

Shinigami92 commented 3 years ago

You my try to contact these library teams and tell them they should use valid extension names for their files. It's kinda writing markdown in a plain .txt file 🤔

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