Angular 类型错误 ('readdirp: root argument must be a string.' )

Question

我的笔记本电脑上有一个非常好的 Angular 应用程序，然后我决定将后端移出独立，从那时起 ng serve引发以下错误。好像通过编译ok了，然后从readdirp抛出错误- 有谁知道这是怎么回事？

Date: 2020-05-19T19:20:23.850Z - Hash: d2eb790e660ef9dbe323 - Time: 10777ms
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
: Compiled successfully.
C:\__FILES\xxx\xxx\xxx\xxx\node_modules\chokidar\node_modules\readdirp\index.js:252
    throw new TypeError('readdirp: root argument must be a string. Usage: readdirp(root, options)');
    ^

谷歌似乎对此知之甚少。我已将我的 npm 包更新到所有内容的最新版本。这是我的 package.json 以防万一:

  "dependencies": {
    "@angular/animations": "^9.1.7",
    "@angular/common": "^9.1.7",
    "@angular/compiler": "^9.1.7",
    "@angular/core": "^9.1.7",
    "@angular/elements": "^9.1.7",
    "@angular/forms": "^9.1.7",
    "@angular/platform-browser": "^9.1.7",
    "@angular/platform-browser-dynamic": "^9.1.7",
    "@angular/router": "^9.1.7",
    "@mapbox/tilebelt": "^1.0.1",
    "@types/geojson": "^7946.0.7",
    "@types/google.visualization": "0.0.52",
    "@types/mapbox-gl": "^1.10.1",
    "babel-runtime": "^6.26.0",
    "bootstrap": "^4.5.0",
    "core-js": "^3.6.5",
    "document-register-element": "^1.7.2",
    "jquery": "^3.5.1",
    "mapbox-gl": "^1.10.1",
    "nodemon": "^2.0.4",
    "popper": "^1.0.1",
    "rxjs": "^6.5.5",
    "tslib": "^2.0.0",
    "typescript": "^3.6.5",
    "zone.js": "^0.10.3"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.901.6",
    "@angular/cli": "^9.1.6",
    "@angular/compiler-cli": "^9.1.7",
    "@angular/language-service": "^9.1.7",
    "@types/jasmine": "^3.5.10",
    "@types/jasminewd2": "~2.0.8",
    "@types/node": "^14.0.3",
    "codelyzer": "^5.2.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "^5.0.2",
    "karma": "^5.0.8",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "^3.0.2",
    "karma-jasmine": "^3.1.1",
    "karma-jasmine-html-reporter": "^1.5.4",
    "protractor": "^7.0.0",
    "ts-node": "^8.10.1",
    "tslint": "^6.1.2"
  }

编辑:
如果我构建它并提供它，没有问题，并且似乎可以通过开发编译。那么与服务开发应用程序有关吗？

Answer 1

@Radik 有正确的方法。我删除了 node_modules , package.json和 package-lock.json ，拿了一个老package.json在我删除后端并执行 npm install 之前.而不是从 package.json 中删除我不需要的行和上次一样，这次我做了 npm uninstall在每个包上运行 ng serve在每个之后以确保它仍然有效。然后我跑了npm outdated并使用 npm install xxx@latest 更新每个包.最后我做到了 npm prune .我不能说哪一步解决了问题，但现在它工作正常。