Question

当我升级到Angular 4并运行ng服务时，我收到以下错误：

ERROR in Cannot read property 'getSymbolByModule' of undefined

依赖关系按照以下

使用

  "dependencies": {
    "@angular/animations": "^4.0.2",
    "@angular/cli": "^1.0.0",
    "@angular/common": "^4.0.2",
    "@angular/compiler": "^4.0.2",
    "@angular/compiler-cli": "^2.4.10",
    "@angular/core": "^4.0.2",
    "@angular/forms": "^4.0.2",
    "@angular/http": "^4.0.2",
    "@angular/platform-browser": "^4.0.2",
    "@angular/platform-browser-dynamic": "^4.0.2",
    "@angular/platform-server": "^4.0.2",
    "@angular/router": "^4.0.2",
    "@types/jasmine": "^2.5.47",
    "angular2-flash-messages": "^1.0.8",
    "angular2-jwt": "^0.1.28",
    "codelyzer": "^2.1.1",
    "core-js": "^2.4.1",
    "jasmine-spec-reporter": "^2.7.0",
    "karma": "^1.6.0",
    "rxjs": "^5.3.0",
    "ts-helpers": "^1.1.2",
    "ts-node": "^1.7.3",
    "typescript": "^2.0.10",
    "zone.js": "^0.8.5"
  },

这里有什么问题吗？

Answer 1

您还需要将@ angular / compiler-cli更新到版本4。

"@angular/compiler-cli": "4.0.2",

Answer 2

这似乎是与@angular/platform-browser相关的问题。您的@angular/platform-browser和@angular/cli版本之间存在冲突。尝试将您的angular / cli更新为最新版本。讨论了同样的问题here

Answer 3

我遇到了同样的问题，但我的devDependencies中也有一个版本的angular-cli。我删除了它，ng-serve工作了。

ERROR in无法读取未定义的属性'getSymbolByModule'

3 个答案: