TypeError: Cannot assign to read only property 'exports' of object '#<Object>'

Bug report

Steps to reproduce

1. vue create some-project
2. yarn add -D vuepress
3. vuepress dev docs
4. open chrome devtool，you can see console:

vue.runtime.esm.js?2b0e:619 [Vue warn]: Failed to resolve async component: function Layout() {
    return __webpack_require__.e(/*! import() */ 0).then(__webpack_require__.bind(null, /*! ./node_modules/@vuepress/theme-default/layouts/Layout.vue */ "./node_modules/@vuepress/theme-default/layouts/Layout.vue"));
  }
Reason: TypeError: Cannot assign to read only property 'exports' of object '#<Object>'

1. vuepress build docs，you can see shell:

(undefined) ./node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus& (./node_modules/mini-css-extract-plugin/dist/loader.js!./node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!./node_modules/vue-loader/lib/loaders/stylePostLoader.js!./node_modules/postcss-loader/src??ref--13-oneOf-1-2!./node_modules/stylus-loader??ref--13-oneOf-1-3!./node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&)
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
TypeError: Cannot assign to read only property 'exports' of object '#<Object>'
    at Module.<anonymous> (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:453:16)
    at Module.module.exports.module.exports (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:471:30)
    at __webpack_require__ (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:21:30)
    at Object.module.exports.module.exports (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:342:17)
    at __webpack_require__ (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:21:30)
    at /Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:85:18
    at Object.<anonymous> (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/css-loader/dist/cjs.js??ref--13-oneOf-1-1!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/loaders/stylePostLoader.js!/Users/yuistack/Documents/Test/test-press/node_modules/postcss-loader/src/index.js??ref--13-oneOf-1-2!/Users/yuistack/Documents/Test/test-press/node_modules/stylus-loader/index.js??ref--13-oneOf-1-3!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!/Users/yuistack/Documents/Test/test-press/node_modules/vue-loader/lib/index.js??vue-loader-options!/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus&:88:10)
    at Module._compile (internal/modules/cjs/loader.js:688:30)
    at exec (/Users/yuistack/Documents/Test/test-press/node_modules/mini-css-extract-plugin/dist/loader.js:58:10)
    at childCompiler.runAsChild (/Users/yuistack/Documents/Test/test-press/node_modules/mini-css-extract-plugin/dist/loader.js:151:14)
    at compile (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:343:11)
    at hooks.afterCompile.callAsync.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:671:15)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:15:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/Hook.js:154:20)
    at compilation.seal.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:668:31)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
 @ ./node_modules/@vuepress/plugin-search/SearchBox.vue?vue&type=style&index=0&lang=stylus& 1:0-435 1:451-454 1:456-888 1:456-888
 @ ./node_modules/@vuepress/plugin-search/SearchBox.vue
 @ ./node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--3-0!./node_modules/babel-loader/lib??ref--3-1!./node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/@vuepress/theme-default/components/Navbar.vue?vue&type=script&lang=js&
 @ ./node_modules/@vuepress/theme-default/components/Navbar.vue?vue&type=script&lang=js&
 @ ./node_modules/@vuepress/theme-default/components/Navbar.vue
 @ ./node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--3-0!./node_modules/babel-loader/lib??ref--3-1!./node_modules/@vuepress/core/node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/@vuepress/theme-default/layouts/Layout.vue?vue&type=script&lang=js&
 @ ./node_modules/@vuepress/theme-default/layouts/Layout.vue?vue&type=script&lang=js&
 @ ./node_modules/@vuepress/theme-default/layouts/Layout.vue
 @ ./node_modules/@vuepress/core/.temp/internal/layout-components.js
 @ ./node_modules/@vuepress/core/lib/client/util.js
 @ ./node_modules/@vuepress/core/lib/client/app.js
 @ ./node_modules/@vuepress/core/lib/client/clientEntry.js
 @ multi ./node_modules/@vuepress/core/lib/client/clientEntry.js
Error: Failed to compile with errors.
    at webpack (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/lib/node/build/index.js:186:16)
    at finalCallback (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/MultiCompiler.js:254:12)
    at runWithDependencies.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/MultiCompiler.js:277:6)
    at done (/Users/yuistack/Documents/Test/test-press/node_modules/neo-async/async.js:2931:13)
    at runCompilers (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/MultiCompiler.js:181:48)
    at err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/MultiCompiler.js:188:7)
    at compiler.run (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/MultiCompiler.js:270:7)
    at finalCallback (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:257:39)
    at hooks.done.callAsync.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:273:13)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:33:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/Hook.js:154:20)
    at onCompiled (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:271:21)
    at hooks.afterCompile.callAsync.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:671:15)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/yuistack/Documents/Test/test-press/node_modules/tapable/lib/Hook.js:154:20)
    at compilation.seal.err (/Users/yuistack/Documents/Test/test-press/node_modules/@vuepress/core/node_modules/webpack/lib/Compiler.js:668:31)
npm ERR! code ELIFECYCLE

1. about repo：vuepress-bug-report

What is expected?

vuepress can work with vue-cli

What is actually happening?

vuepress can’t work with vue-cli

Other relevant information

Environment Info:

  System:
    OS: macOS 10.14.5
    CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
  Binaries:
    Node: 10.13.0 - ~/.nvm/versions/node/v10.13.0/bin/node
    Yarn: 1.16.0 - /usr/local/bin/yarn
    npm: 6.10.2 - ~/.nvm/versions/node/v10.13.0/bin/npm
  Browsers:
    Chrome: 75.0.3770.142
    Firefox: 67.0.2
    Safari: 12.1.1
  npmPackages:
    @vuepress/core:  1.0.3
    @vuepress/theme-default:  1.0.3
    vuepress: ^1.0.3 => 1.0.3
  npmGlobalPackages:
    vuepress: Not Found

vue-cli version：3.1.0

[kyleslight]

The same problem here, I find out in my project it’s related with @vue/cli-service

I remove @vue/cli-service in package.json and install packages again, my project works.

[meteorlxy]

Seems that it’s caused by #1685.

So my workaround is to downgrade @vuepress/core to v1.0.2 (sad 😢 ):

  "dependencies": {
    "@vuepress/core": "1.0.2",
    "vuepress": "1.0.2",
  }