Unexpected value 'AnyComponent' declared by the module 'AppModule'

25
votes

I'm using Angular2 and I got this problem when tryng to use two classes in the same Typescript file.

At compile time doesn't give me any error but when I try to execute the page the console.log is giving this error:

Error: BaseException@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:5116:27
    CompileMetadataResolver</CompileMetadataResolver.prototype.getNgModuleMetadata/<@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:13274:35
    CompileMetadataResolver</CompileMetadataResolver.prototype.getNgModuleMetadata@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:13261:21
    RuntimeCompiler</RuntimeCompiler.prototype._compileComponents@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:15845:28
    RuntimeCompiler</RuntimeCompiler.prototype._compileModuleAndComponents@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:15769:36
    RuntimeCompiler</RuntimeCompiler.prototype.compileModuleAsync@http://www.my.app/panel-module/node_modules/@angular/compiler//bundles/compiler.umd.js:15746:20
    PlatformRef_</PlatformRef_.prototype._bootstrapModuleWithZone@http://www.my.app/panel-module/node_modules/@angular/core//bundles/core.umd.js:9991:20
    PlatformRef_</PlatformRef_.prototype.bootstrapModule@http://www.my.app/panel-module/node_modules/@angular/core//bundles/core.umd.js:9984:20
    @http://www.my.app/panel-module/app/main.js:4:1
    @http://www.my.app/panel-module/app/main.js:1:31
    @http://www.my.app/panel-module/app/main.js:1:2
    Zone</ZoneDelegate</ZoneDelegate.prototype.invoke@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:332:20
    Zone</Zone</Zone.prototype.run@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:225:25
    scheduleResolveOrReject/<@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:586:53
    Zone</ZoneDelegate</ZoneDelegate.prototype.invokeTask@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:365:24
    Zone</Zone</Zone.prototype.runTask@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:265:29
    drainMicroTaskQueue@http://www.my.app/panel-module/node_modules/zone.js/dist/zone.js:491:26
    F/</g@http://www.my.app/panel-module/node_modules/core-js/client/shim.min.js:8:10016
    F/<@http://www.my.app/panel-module/node_modules/core-js/client/shim.min.js:8:10138
    a.exports/k@http://www.my.app/panel-module/node_modules/core-js/client/shim.min.js:8:14293

    Evaluating http://www.my.app/panel-module/app/main.js
    Error loading http://www.my.app/panel-module/app/main.js

Below is my component typescript file.

// MyComponent.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: '/path/to/view',
})

export class MyObject {
  id: number;
}


export class MyComponent {
   obj: MyObject;

   // unecessary code
}
3
angulartypescript

3 Answers

40
votes

You have to change the order of your classes, then there is no problem to have multiple classes in the same file. Cause in your case that decorator @Component is now being used for your class MyObject instead of MyComponent !

The decorator @Component needs to be directly in front of your Component definition!!

import { Component, OnInit } from '@angular/core';


export class MyObject1 {
  id: number;
}

@Component({
  selector: 'my-app',
  templateUrl: '/path/to/view',
})
export class MyComponent {
   obj: MyObject;

   // unecessary code
}

export class MyObject2 {
  id: number;
}
2
votes

Here is how I fixed it:

Put the MyObject into a separated file and import him.

// MyObject.ts

export class MyObject {
  id: number;
}

// MyComponent.ts

import { Component, OnInit } from '@angular/core';
import { MyObject } from 'path/to/MyObject';

@Component({
  selector: 'my-app',
  templateUrl: '/path/to/view',
})

export class MyComponent {
   obj: MyObject;

   // unecessary code
}
0
votes

FYI, my case i just had some js logic where it could'nd be

<my-tag [HTML]="sourcesHtml ? sourcesHtml[i] : ''">

changed to 

<my-tag [HTML]="sourcesHtml[i]">

and error was removed