错误：无法装入程序ionic2

Question

ionic cordova build android [WARN]在package.json中检测到@ ionic / cli-plugin-ionic-angular。

       As of CLI 3.8, it is no longer needed. You can uninstall it:

       npm uninstall --save-dev --save-exact @ionic/cli-plugin-ionic-a

[INFO] Running app-scripts build: --platform android --target cordova

[15:38:32]  build dev started ...
[15:38:32]  clean started ...
[15:38:32]  clean finished in 1 ms
[15:38:32]  copy started ...
[15:38:32]  transpile started ...
[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 6
            Cannot find name 'describe'.

       L5:  beforeEach(() => {
       L6:    TestBed.configureTestingModule({
       L7:      declarations: [

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 7
            Cannot find name 'beforeEach'.

       L6:  TestBed.configureTestingModule({
       L7:    declarations: [
       L8:      AppComponent

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 16
            Cannot find name 'it'.

      L15:  const fixture = TestBed.createComponent(AppComponent);
      L16:  const app = fixture.debugElement.componentInstance;
      L17:  expect(app).toBeTruthy();

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 19
            Cannot find name 'expect'.

      L18:    }));
      L20:    it(`should have as title 'app works!'`, async(() => {

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 22
            Cannot find name 'it'.

      L21:  const fixture = TestBed.createComponent(AppComponent);
      L22:  const app = fixture.debugElement.componentInstance;
      L23:  expect(app.title).toEqual('app works!');

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 25
            Cannot find name 'expect'.

      L24:    }));
      L26:    it('should render title in a h1 tag', async(() => {

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 28
            Cannot find name 'it'.

      L27:  const fixture = TestBed.createComponent(AppComponent);
      L28:  fixture.detectChanges();
      L29:  const compiled = fixture.debugElement.nativeElement;

[15:38:39]  typescript: C:/Users/NATALIA/Pictures/mdp365-ionic3/src/aponent.spec.ts, line: 32
            Cannot find name 'expect'.

      L31:    }));
      L32:  });

错误：无法在C处以新的BuildError（C：\\ Users \\ NATALIA \\ Pictures \\ mdp365-ionic3 \\ node_moic \\ app-scripts \\ dist \\ util \\ errors.js：16：28）在BuildError.Error（本机）处编译程序：\\ Users \\ NATALIA \\ Pictures \\ mdp365-ionic3 \\ node_modules \\ @ionic \\ appist \\ transpile.js：137：20 at transpileWorker（C：\\ Users \\ NATALIA \\ Pictures \\ mdp365-ionic3 \\ node_mnic \\ app-scripts \\ dist \\在buildProject（C：\\ Usersenter代码）的Object.transpile（C：\\ Users \\ NATALIA \\ Pictures \\ mdp365-ionic3 \\ node_onic \\ app-scripts \\ dist \\ transpile.js：61：12）处的transpile.js：103：12）此处\\ NATALIA \\图片\\ mdp365-ionic3 \\ node_modu \\ app-scripts \\ dist \\ build.js：97：78）位于C：\\ Users \\ NATALIA \\ Pictures \\ mdp365-ionic3 \\ node_modules \\ @ionic \\ appist \\ build.js ：47：16

Answer 1

所有缺少的成员看上去都与您的测试框架相关（我猜是Jasmine或Jest）：

Cannot find name 'describe'.
...
Cannot find name 'it'.

您需要确保：

1. 您有可用的框架（在package.json等中）
2. 已将框架导入到您的规范文件中（导入/需要等）