vaadin - 找不到模块 '@vaadin/flow-frontend/Flow'

Question

Vaadin 突然停止构建我的库并出现以下错误。我已经跳了 Vaadin 舞(还有很多其他的东西)，但我现在没主意了。我尝试为生产构建库(但对于开发也失败了)。

我正在使用 Vaadin Flow。 Github 上的问题跟踪器重定向到这里以获得一般社区帮助 - 所以我希望任何人都知道如何解决这个问题或者我可以尝试其他什么。

> Task vaadinBuildFrontend FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task 'vaadinBuildFrontend'.
> Webpack process exited with non-zero exit code.
  Stderr: 'Hash: e1a6ace26ca6df86c87b
  Version: webpack 4.46.0
  Time: 6054ms
  Built at: 12/22/2021 7:13:38 PM
                                                Asset      Size  Chunks               Chunk Names
  VAADIN/build/vaadin-1-8595bda5c7958e210407.cache.js   894 KiB       1  [immutable]
  VAADIN/build/vaadin-2-d5ce16eeb5d943cfe059.cache.js   284 KiB       2  [immutable]
  VAADIN/build/vaadin-3-7d2fe309de5248ed4c09.cache.js  48.7 KiB       3  [immutable]
  VAADIN/build/vaadin-4-2758512dfda3ea8392cc.cache.js  1.05 KiB       4  [immutable]
  Entrypoint bundle =
    [0] ./generated/vaadin.ts + 2 modules 91.2 KiB {0} [built]
        | ./generated/vaadin.ts 18 bytes [built]
        | ./generated/index.ts 337 bytes [built]
        | ../node_modules/.pnpm/@vaadin/router@1.7.4/node_modules/@vaadin/router/dist/vaadin-router.js 90.9 KiB [built]
    [1] ../node_modules/.pnpm/@vaadin/vaadin-themable-mixin@22.0.1/node_modules/@vaadin/vaadin-themable-mixin/vaadin-themable-mixin.js 7.07 KiB {2} [built]
    [3] ../node_modules/.pnpm/lit@2.0.0/node_modules/lit/index.js + 3 modules 8.83 KiB {2} [built]
        | ../node_modules/.pnpm/lit@2.0.0/node_modules/lit/index.js 122 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/reactive-element.js 5.89 KiB [built]
        | ../node_modules/.pnpm/lit-element@3.0.2/node_modules/lit-element/lit-element.js 1.35 KiB [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/css-tag.js 1.46 KiB [built]
    [4] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/spacing.js 1.42 KiB {2} [built]
    [5] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/color.js 6.82 KiB {2} [built]
    [6] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/style.js 1.38 KiB {2} [built]
    [8] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/sizing.js 829 bytes {2} [built]
    [9] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/typography.js 2.99 KiB {2} [built]
   [27] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/version.js 313 bytes {2} [built]
   [43] ../node_modules/.pnpm/@vaadin/button@22.0.1/node_modules/@vaadin/button/theme/lumo/vaadin-button.js 73 bytes {1} [built]
   [80] ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/icons.js + 2 modules 31.5 KiB {2} [built]
        | ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/icons.js 276 bytes [built]
        | ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/iconset.js 15.5 KiB [built]
        | ../node_modules/.pnpm/@vaadin/vaadin-lumo-styles@22.0.1/node_modules/@vaadin/vaadin-lumo-styles/vaadin-iconset.js 15.7 KiB [built]
  [188] ../node_modules/.pnpm/@vaadin/common-frontend@0.0.17_lit@2.0.0/node_modules/@vaadin/common-frontend/ConnectionIndicator.js + 14 modules 35.9 KiB {2} [built]
        | ../node_modules/.pnpm/@vaadin/common-frontend@0.0.17_lit@2.0.0/node_modules/@vaadin/common-frontend/ConnectionIndicator.js 14.3 KiB [built]
        | ../node_modules/.pnpm/tslib@2.3.1/node_modules/tslib/tslib.es6.js 11.5 KiB [built]
        | ../node_modules/.pnpm/lit@2.0.0/node_modules/lit/decorators.js 525 bytes [built]
        | ../node_modules/.pnpm/lit@2.0.0/node_modules/lit/directives/class-map.js 85 bytes [built]
        | ../node_modules/.pnpm/@vaadin/common-frontend@0.0.17_lit@2.0.0/node_modules/@vaadin/common-frontend/ConnectionState.js 4.36 KiB [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/custom-element.js 364 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/property.js 572 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/state.js 225 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/event-options.js 280 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/query.js 612 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/query-all.js 388 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/query-async.js 392 bytes [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/query-assigned-nodes.js 603 bytes [built]
        | ../node_modules/.pnpm/lit-html@2.0.2/node_modules/lit-html/directives/class-map.js 1.1 KiB [built]
        | ../node_modules/.pnpm/@lit/reactive-element@1.0.2/node_modules/@lit/reactive-element/decorators/base.js 666 bytes [built]
  [217] ../node_modules/.pnpm/@vaadin/polymer-legacy-adapter@22.0.1/node_modules/@vaadin/polymer-legacy-adapter/style-modules.js + 1 modules 4.38 KiB {2} [built]
        | ../node_modules/.pnpm/@vaadin/polymer-legacy-adapter@22.0.1/node_modules/@vaadin/polymer-legacy-adapter/style-modules.js 191 bytes [built]
        | ../node_modules/.pnpm/@vaadin/polymer-legacy-adapter@22.0.1/node_modules/@vaadin/polymer-legacy-adapter/src/style-modules.js 4.17 KiB [built]
  [222] ../build/frontend/generated-flow-imports-fallback.js + 56 modules 104 KiB {3} [built]
        | ../build/frontend/generated-flow-imports-fallback.js 9.98 KiB [built]
        | ./basic/variables.css 943 bytes [built]
        | ./images/cropper/cropper.css 778 bytes [built]
        | ./basic/spacer.css 116 bytes [built]
        | ./tab-box/tab-box.css 458 bytes [built]
        | ./text/text-area.css 103 bytes [built]
        | ./buttons/internal-button.css 104 bytes [built]
        | ./layouts/br-app-layout.css 206 bytes [built]
        | ./buttons/flat-icon-button.css 242 bytes [built]
        | ./modal/raven-modal.css 219 bytes [built]
        | ./headings/headings.css 60 bytes [built]
        | ./layouts/br-horizontal-layout.css 150 bytes [built]
        | ./text/text-line-with-icon.css 182 bytes [built]
        | ./input/br-inline-edit.css 159 bytes [built]
        | ./buttons/action-button.css 890 bytes [built]
        |     + 42 hidden modules
  [223] ../build/frontend/generated-flow-imports.js + 1 modules 1.72 KiB {4} [built]
        | ../build/frontend/generated-flow-imports.js 1.41 KiB [built]
        | ../build/flow-frontend/lumo-includes.ts 276 bytes [built]
      + 209 hidden modules

  ERROR in ./generated/index.ts
  Module not found: Error: Can't resolve '@vaadin/flow-frontend/Flow' in '/XXX/frontend/generated'
   @ ./generated/index.ts 2:0-50 3:33-37
   @ ./generated/vaadin.ts

  ERROR in chunk bundle [entry]
  VAADIN/build/vaadin-bundle-ca5b59ddaf6cebb1e7aa.cache.js
  /XXX/node_modules/.pnpm/esbuild-loader@2.15.1_webpack@4.46.0/node_modules/esbuild-loader/dist/index.js??ref--4!/XXX/frontend/generated/vaadin.ts a8f7ce42c2f8c5128bbf70605fdcb37b
  Unexpected token (4:33)
  |
  |
  | const { serverSideRoutes } = new !(function webpackMissingModule() { var e = new Error("Cannot find module '@vaadin/flow-frontend/Flow'"); e.code = 'MODULE_NOT_FOUND'; throw e; }())({
  |   imports: () => Promise.all(/* import() */[__webpack_require__.e(2), __webpack_require__.e(4)]).then(__webpack_require__.bind(null, 223))
  | });

  ERROR in frontend/generated/index.ts:17:22
  TS2307: Cannot find module '@vaadin/flow-frontend/Flow' or its corresponding type declarations.
      15 |
      16 | // import Flow module to enable navigation to Vaadin server-side views
    > 17 | import { Flow } from '@vaadin/flow-frontend/Flow';
         |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      18 |
      19 | const { serverSideRoutes } = new Flow({
      20 |   imports: () => import('../../build/frontend/generated-flow-imports')
  Child HtmlWebpackCompiler:
                            Asset     Size  Chunks  Chunk Names
      __child-HtmlWebpackPlugin_0  4.4 KiB       0  HtmlWebpackPlugin_0
      Entrypoint HtmlWebpackPlugin_0 = __child-HtmlWebpackPlugin_0
      [0] ../node_modules/.pnpm/html-webpack-plugin@4.5.1_webpack@4.46.0/node_modules/html-webpack-plugin/lib/loader.js!./index.html 830 bytes {0} [built]
  <i> [build-status] 3 errors and 0 warnings were reported.
  <i> [build-status] : Failed to compile.
  '

//编辑 1

我已经尝试了所有这些(按此顺序):

rm -rf ~/.pnpm-store ~/.vaadin
rm -rf package.json pnpm-lock.json pnpmfile.json tsconfig.json webpack.config.js webpack.generated.js .npmrc frontend/generated/ frontend/index.html build/ target/ node_modules pnpm-lock.yaml pnpmfile.js types.d.ts
./gradlew vaadinClean && ./gradlew vaadinPrepareFrontend && ./gradlew vaadinBuildFrontend

Answer 1

我在从 V21 迁移到 V22 时遇到了同样的问题。我通过删除目标文件夹(以及根文件夹中生成的文件，如 tsconfig 等)并再次重建来修复它。之后工作完美，没有进一步的问题。我怀疑 V21 的 target 文件夹中有一些东西混淆了构建。