【发布时间】：2021-12-17 15:16:05
【问题描述】：
当需要将其升级到 Angular 12 时，我正在处理 Angular 8 项目。由于我完全来自 React 环境，所以在我开始之前并不认为会这么麻烦。我已经关注Angular Upgrade guide 2 天了，但一直收到以下错误：
⠋ Generating browser application bundles (phase: setup)...TypeError: Cannot read properties of undefined (reading 'text')
at NodeObject.getText (C:\<project_name>\node_modules\typescript\lib\typescript.js:152697:31)
at getRequiredModulePath (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\host\umd_host.js:519:99)
at Object.getImportsOfUmdModule (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\host\umd_host.js:510:23)
at UmdDependencyHost.extractImports (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\dependencies\umd_dependency_host.js:43:54)
at UmdDependencyHost.DependencyHostBase.recursivelyCollectDependencies (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\dependencies\dependency_host.js:85:32)
at UmdDependencyHost.DependencyHostBase.collectDependencies (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\dependencies\dependency_host.js:38:22)
at DependencyResolver.getEntryPointWithDependencies (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\dependencies\dependency_resolver.js:75:22)
at EntryPointCollector.walkDirectoryForPackages (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\entry_point_finder\entry_point_collector.js:47:52)
at EntryPointCollector.walkDirectoryForPackages (C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\entry_point_finder\entry_point_collector.js:75:103)
at C:\<project_name>\node_modules\@angular\compiler-cli\ngcc\src\entry_point_finder\program_based_entry_point_finder.js:124:100
C:\<project_name>\node_modules\@ngtools\webpack\src\ngcc_processor.js:139
throw new Error(errorMessage + `NGCC failed${errorMessage ? ', see above' : ''}.`);
^
Error: NGCC failed.
at NgccProcessor.process (C:\<project_name>\node_modules\@ngtools\webpack\src\ngcc_processor.js:139:19)
at <project_name>\node_modules\@ngtools\webpack\src\ivy\plugin.js:129:27
at Hook.eval [as call] (eval at create (C:\<project_name>\node_modules\tapable\lib\HookCodeFactory.js:19:10), <anonymous>:20:1)
at Hook.CALL_DELEGATE [as _call] (C:\<project_name>\node_modules\tapable\lib\Hook.js:14:14)
at Compiler.newCompilation (C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Compiler.js:1043:30)
at C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Compiler.js:1088:29
at Hook.eval [as callAsync] (eval at create (C:\<project_name>\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:22:1)
at Hook.CALL_ASYNC_DELEGATE [as _callAsync] (C:\<project_name>\node_modules\tapable\lib\Hook.js:18:14)
at Compiler.compile (C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Compiler.js:1083:28)
at C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Watching.js:200:19
at Hook.eval [as callAsync] (eval at create (C:\<project_name>\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:22:1)
at Hook.CALL_ASYNC_DELEGATE [as _callAsync] (C:\<project_name>\node_modules\tapable\lib\Hook.js:18:14)
at run (C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Watching.js:154:33)
at C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Watching.js:149:6
at Compiler.readRecords (C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Compiler.js:920:11)
at run (C:\<project_name>\node_modules\@angular-devkit\build-angular\node_modules\webpack\lib\Watching.js:145:26)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! <project_name>@0.0.0 start: `ng serve --proxy-config proxy.conf.json`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the <project_name>@0.0.0 start script.
package.json:
{
"name": "aly",
"version": "0.0.0",
"license": "MIT",
"scripts": {
"ng": "ng",
"start": "ng serve --proxy-config proxy.conf.json",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular-devkit/core": "12.2.12",
"@angular-devkit/schematics": "12.2.12",
"@angular/animations": "^12.2.12",
"@angular/cdk": "^12.2.12",
"@angular/common": "^12.2.12",
"@angular/compiler": "^12.2.12",
"@angular/core": "^12.2.12",
"@angular/flex-layout": "^12.0.0-beta.35",
"@angular/forms": "^12.2.12",
"@angular/http": "^7.2.16",
"@angular/material": "^12.2.12",
"@angular/platform-browser": "^12.2.12",
"@angular/platform-browser-dynamic": "^12.2.12",
"@angular/router": "^12.2.12",
"@auth0/angular-jwt": "^3.0.1",
"@covalent/core": "2.1.1",
"@ngx-translate/core": "^11.0.1",
"@ngx-translate/http-loader": "^4.0.0",
"@schematics/angular": "^8.3.29",
"@types/file-saver": "^2.0.3",
"@types/lodash": "^4.14.176",
"@types/xml2js": "^0.4.9",
"ag-grid-angular": "^22.1.1",
"ag-grid-community": "^22.1.1",
"color-string": "^1.6.0",
"core-js": "^3.19.1",
"file-saver": "^2.0.5",
"font-awesome": "^4.7.0",
"lodash.debounce": "^4.0.8",
"ng2-dnd": "^5.0.2",
"ngx-color-picker": "^8.2.0",
"ngx-text-equality-validator": "^1.0.1",
"ngx-toastr": "^11.3.3",
"npm": "^6.14.15",
"rxjs": "^6.6.7",
"rxjs-compat": "^6.6.7",
"stream": "0.0.2",
"timers": "^0.1.1",
"tslib": "^2.0.0",
"xml2js": "^0.4.23",
"zone.js": "~0.11.4"
},
"devDependencies": {
"@angular-devkit/build-angular": "~12.2.12",
"@angular/cli": "^12.2.12",
"@angular/compiler-cli": "^12.2.12",
"@angular/language-service": "^12.2.12",
"@types/jasmine": "~3.6.0",
"@types/jasminewd2": "^2.0.10",
"@types/node": "^12.20.36",
"codelyzer": "^6.0.0",
"jasmine-core": "~3.6.0",
"jasmine-spec-reporter": "~5.0.0",
"karma": "~6.3.7",
"karma-chrome-launcher": "~3.1.0",
"karma-cli": "~2.0.0",
"karma-coverage-istanbul-reporter": "~3.0.2",
"karma-jasmine": "~4.0.0",
"karma-jasmine-html-reporter": "^1.5.0",
"protractor": "~7.0.0",
"ts-node": "^8.10.2",
"tslint": "~6.1.0",
"typescript": "4.3.5",
"uglifyjs-webpack-plugin": "^2.0.1",
"webpack": "^4.46.0"
}
}
tsconfig.json：
{
"compileOnSave": false,
"compilerOptions": {
"downlevelIteration": true,
"importHelpers": true,
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"experimentalDecorators": true,
"target": "es2015",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2016",
"dom"
],
"module": "esnext",
"baseUrl": "./"
}
}
我已经使用npm outdated 检查过时的软件包并更新了所有软件包。不幸的是，这里发布的大多数答案对我不起作用，例如将 enableIvy 设置为 true/false 并删除 node_modules/重新安装它们。感谢您提供任何额外的帮助或建议。
【问题讨论】：
-
如果您的 ng 库之一不支持 ivy，例如它会弄乱您的项目。尝试升级到 ng11 或提取直到找到罪魁祸首
-
谢谢，我照做了，发现一个包用了4年没用过。
-
我也有同样的问题。上述建议是否解决了您的问题？ Angular 12.2.11 开始出现问题。 Angular 12.2.10 可以正常工作。
-
是的，问题消失了。在 SO 上尝试了所有建议的答案，但没有一个有效。底线是，您可能有与正在使用的角度版本不兼容的包。我检查了每一个并卸载了它，直到找到导致错误的那个。
-
@misha130 你会发布你的答案以便我将其标记为已接受吗？
标签： angular typescript angular12