Angular 角度材料步进机赢得'；发球时不要编译

我是角材料设计新手，我正在使用angular cli进行开发

我已经被困在这几个小时了，这是一个错误与角材料设计的最新版本

我有：

• 已删除我的包-lock.json
• 已删除的节点\u模块
• 已安装npm

我在做ng发球时遇到以下错误：

chunk {main} main.js, main.js.map (main) 1.82 kB [initial] [rendered]
chunk {polyfills} polyfills.js, polyfills.js.map (polyfills) 670 bytes [initial] [rendered]
chunk {runtime} runtime.js, runtime.js.map (runtime) 6.15 kB [entry] [rendered]
chunk {styles} styles.js, styles.js.map (styles) 169 kB [initial] [rendered]
chunk {vendor} vendor.js, vendor.js.map (vendor) 339 kB [initial] [rendered]
Date: 2020-10-25T23:30:59.574Z - Hash: 715bbfd073a15e95d490 - Time: 10021ms

ERROR in node_modules/@angular/material/stepper/stepper.d.ts:31:22 - error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class.

This likely means that the library (@angular/material/stepper) which declares MatStepper has not been processed correctly by ngcc, or is not compatible with Angular Ivy. Check if a newer version of the library is available, and update if so. Also consider checking with the library's authors to see if the library is expected to be compatible with Ivy.

31 export declare class MatStepper extends CdkStepper implements AfterContentInit {
                        ~~~~~~~~~~

** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **

My package.json是：

  "name": "main",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~10.2.0",
    "@angular/cdk": "^10.2.5",
    "@angular/common": "~10.2.0",
    "@angular/compiler": "~10.2.0",
    "@angular/core": "~10.2.0",
    "@angular/forms": "~10.2.0",
    "@angular/material": "^10.2.5",
    "@angular/platform-browser": "~10.2.0",
    "@angular/platform-browser-dynamic": "~10.2.0",
    "@angular/router": "~10.2.0",
    "rxjs": "~6.6.0",
    "tslib": "^2.0.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.1002.0",
    "@angular/cli": "~10.2.0",
    "@angular/compiler-cli": "~10.2.0",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "^12.19.1",
    "codelyzer": "^6.0.0",
    "jasmine-core": "~3.6.0",
    "jasmine-spec-reporter": "~5.0.0",
    "karma": "~5.0.0",
    "karma-chrome-launcher": "~3.1.0",
    "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": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~4.0.2"
  }
}

我的app.module.ts是：

import { NgModule } from '@angular/core';

import { ReactiveFormsModule } from '@angular/forms';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { MatStepper } from '@angular/material/stepper';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HeaderComponent } from './header/header.component';
import { HomeComponent } from './home/home.component';
import { SearchComponent } from './search/search.component';
import { CreateComponent } from './create/create.component';
import { FormationsComponent } from './formations/formations.component';

@NgModule({
  declarations: [
    AppComponent,
    HeaderComponent,
    HomeComponent,
    SearchComponent,
    CreateComponent,
    FormationsComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    BrowserAnimationsModule,
    MatButtonModule,
    MatIconModule,
    MatStepper,
    ReactiveFormsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

---

查看文档：

从'@angular/material/stepper'导入{MatStepperModule}；

您正在导入

MatStepper

但stepper是一个模块，因此

在应用程序模块中导入MatStepperModule

：

import {MatStepperModule} from '@angular/material/stepper';

.

导入“MatStepperModule”而不是“MatStepper”