Angular 9 mat-progress-buttons 错误：由于编译错误无法编译入口点 mat-progress-buttons (es2015 as esm2015) 中的错误

Question

从 Angular 8 更新到 Angular 9 后，下面给出的 mat-progress-button 出现错误。它在 Angular 8 上工作正常。MatProgressButton 与 Angular 9 不兼容吗？

node_modules/mat-progress-buttons/esm2015/mat-progress-buttons.js:181:26 - error NG1010: Value at position 1 in the NgModule.imports of MatProgressButtonsModule is not a reference: [object Object]

导入看起来像： import { MatProgressButtonsModule } from 'mat-progress-buttons';

我的 package.json 看起来像这样：

  "dependencies": {
    "@angular/animations": "^9.0.2",
    "@angular/cdk": "^9.1.0",
    "@angular/common": "~9.0.2",
    "@angular/compiler": "~9.0.2",
    "@angular/core": "~9.0.2",
    "@angular/forms": "~9.0.2",
    "@angular/material": "^9.1.0",
    ...
    "@angular/router": "~9.0.2",
    "core-js": "^2.5.4",
    "mat-file-upload": "^1.3.2",
    "mat-progress-buttons": "^8.0.7",
    "rxjs": "~6.5.4",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.3",
    "@angular/cli": "~9.0.3",
    "@angular/compiler-cli": "~9.0.2",
    "@angular/language-service": "~9.0.2",
   ...
    "typescript": "^3.7.5"
  }
}

Answer 1

我遇到过同样的问题。似乎已安装模块的版本存在某种错误。我通过删除该 node_module文件夹并使用 重新启动它来解决它npm install。