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The property does not exist. Angular2 ver.2.0-alpha.44

New in Angular2, trying to run this plunkr project on my local system. I get the following errors:

Error: (25, 23) TS2339: The "people" property does not exist in the "PeopleService" type. Error: (26, 39) TS2339: The people property does not exist in the People type

on the lines: peopleService.people
              .subscribe (people => this.people = people);

I am sure that I have a properly configured environment, since I have other basic components that work properly.

people.ts file:

import {Component, View, CORE_DIRECTIVES} from 'angular2/angular2'  
import {PeopleService} from './peopleService'  
import {Person} from './person'

@Component({  
    selector: 'my-app',  
    providers: [PeopleService]  
})  
@View({
    template: `
    <div>
      <h2>Hello Angular2!</h2>
      <my-person
        *ng-for="#person of people"
        [name]="person.name"
        (hello)="saidHello($event)">
      </my-person>
    </div>
  `,  
        directives: [CORE_DIRECTIVES, Person]  
})  
export class People {  
    constructor(public peopleService:PeopleService) {  
        peopleService.people  
            .subscribe(people => this.people = people);  
    }  
    saidHello($event){  
        alert(`You said hello to ${$event}`)  
    }
}

A similar error in the peopleService.ts file :

: (8, 14) TS2339: "people" "PeopleService".

//a simple service
import {Injectable} from 'angular2/angular2';
import {Http} from 'angular2/http';

@Injectable()
export class PeopleService {
  constructor(http:Http) {
    this.people = http.get('api/people.json').map(res => res.json());
  }
}

!

Yaniv, I'm still working thru this, below is the exception after implementing the change.  Also, I didn't notice this before but I'm getting a warning in the people.ts file on the following statements:
    [name]="person.name"
    (hello)="saidHello($event)">

  []
  ()

EXCEPTION: Cannot resolve all parameters for People(?). Make sure they all have valid type or annotations.
angular2.dev.js:21835 EXCEPTION: Cannot resolve all parameters for People(?). Make sure they all have valid type or annotations.BrowserDomAdapter.logError @ angular2.dev.js:21835BrowserDomAdapter.logGroup @ angular2.dev.js:21846ExceptionHandler.call @ angular2.dev.js:4431(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 STACKTRACE:BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4433(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 Error: Cannot resolve all parameters for People(?). Make sure they all have valid type or annotations.
    at NoAnnotationError.BaseException [as constructor] (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:16034:21)
    at new NoAnnotationError (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:4983:14)
    at _dependenciesFor (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:20066:13)
    at resolveFactory (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:19964:22)
    at Object.resolveProvider (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:19983:66)
    at Function.DirectiveProvider.createFromProvider (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:23906:27)
    at Function.DirectiveProvider.createFromType (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:23915:32)
    at provideDirective (http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:27209:49)
    at http://127.0.0.1:8080/node_modules/angular2/bundles/angular2.dev.js:27188:14
    at Array.map (native)BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4434(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21845 EXCEPTION: TypeError: Cannot read property 'location' of undefined
angular2.dev.js:21835 EXCEPTION: TypeError: Cannot read property 'location' of undefinedBrowserDomAdapter.logError @ angular2.dev.js:21835BrowserDomAdapter.logGroup @ angular2.dev.js:21846ExceptionHandler.call @ angular2.dev.js:4431(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 STACKTRACE:BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4433(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 TypeError: Cannot read property 'location' of undefined
    at angular2.dev.js:19434
    at Zone.run (angular2.dev.js:138)
    at Zone.run (angular2.dev.js:10644)
    at zoneBoundFn (angular2.dev.js:111)
    at lib$es6$promise$$internal$$tryCatch (angular2.dev.js:1507)
    at lib$es6$promise$$internal$$invokeCallback (angular2.dev.js:1519)
    at lib$es6$promise$$internal$$publish (angular2.dev.js:1490)
    at angular2.dev.js:219
    at microtask (angular2.dev.js:10670)
    at Zone.run (angular2.dev.js:138)BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4434(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21845 EXCEPTION: TypeError: Cannot read property 'hostView' of undefined
angular2.dev.js:21835 EXCEPTION: TypeError: Cannot read property 'hostView' of undefinedBrowserDomAdapter.logError @ angular2.dev.js:21835BrowserDomAdapter.logGroup @ angular2.dev.js:21846ExceptionHandler.call @ angular2.dev.js:4431(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 STACKTRACE:BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4433(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301
angular2.dev.js:21835 TypeError: Cannot read property 'hostView' of undefined
    at tick (angular2.dev.js:19626)
    at Zone.run (angular2.dev.js:138)
    at Zone.run (angular2.dev.js:10644)
    at zoneBoundFn (angular2.dev.js:111)
    at lib$es6$promise$$internal$$tryCatch (angular2.dev.js:1507)
    at lib$es6$promise$$internal$$invokeCallback (angular2.dev.js:1519)
    at lib$es6$promise$$internal$$publish (angular2.dev.js:1490)
    at angular2.dev.js:219
    at microtask (angular2.dev.js:10670)
    at Zone.run (angular2.dev.js:138)BrowserDomAdapter.logError @ angular2.dev.js:21835ExceptionHandler.call @ angular2.dev.js:4434(anonymous function) @ angular2.dev.js:19543NgZone._onError @ angular2.dev.js:10711errorHandling.onError @ angular2.dev.js:10630run @ angular2.dev.js:141(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$$internal$$tryCatch @ angular2.dev.js:1507lib$es6$promise$$internal$$invokeCallback @ angular2.dev.js:1519lib$es6$promise$$internal$$publish @ angular2.dev.js:1490(anonymous function) @ angular2.dev.js:219microtask @ angular2.dev.js:10670run @ angular2.dev.js:138(anonymous function) @ angular2.dev.js:10644zoneBoundFn @ angular2.dev.js:111lib$es6$promise$asap$$flush @ angular2.dev.js:1301

EDIT:

PeopleService

//a simple service import {Injectable} from 'angular2/angular2';

@Injectable() export class PeopleService {
    people: any;
    constructor() {
        this.people = [
            {"id": 1, "name": "Brad"},
            {"id": 2, "name": "Jules"},
            {"id": 3, "name": "Jeff"}
        ]
    } }
+4
3

Typescript. people PeopleService:

 //a simple service
import {Injectable} from 'angular2/angular2';
import {Http} from 'angular2/http';

@Injectable()
export class PeopleService {
  people: any;//-> this part is missing in your code.
  constructor(http:Http) {
    this.people = http.get('api/people.json').map(res => res.json());
  }
}

, , any. , .

EDIT:

​​PeopleService. , People :

import {Component, View, CORE_DIRECTIVES} from 'angular2/angular2'
import {Inject} from 'angular2/core'; 
import {PeopleService} from './peopleService'  
import {Person} from './person'

@Component({  
    selector: 'my-app',  
    providers: [PeopleService]  
})  
@View({
    template: `
    <div>
      <h2>Hello Angular2!</h2>
      <my-person
        *ng-for="#person of people"
        [name]="person.name"
        (hello)="saidHello($event)">
      </my-person>
    </div>
  `,  
        directives: [CORE_DIRECTIVES, Person]  
})  
export class People {
    public peopleService: PeopleService;   

    constructor(@Inject(PeopleService) peopleService:PeopleService) {  
      this.peopleService = peopleService;  
      this.peopleService.people  
            .subscribe(people => this.people = people);  
    }  
    saidHello($event){  
        alert(`You said hello to ${$event}`)  
    }
}

@Inject(PeopleService) :

import {Inject} from 'angular2/core';

Angular 2, !

+11

@Yaniv, plunkr.

plunkr, . , tsc live-.

, env , ( ). , peopleervice.ts( ), , people.ts...., .

(config.js), ts. , , , . , plunkr env.

System.config({

    // New configuration
    transpiler: 'typescript',
    typescriptOptions: {
        emitDecoratorMetadata: true
    },

    map: { //map tells the System loader where to look for things
        people: "./src"
    },

    packages: { people: { main: './app.ts', defaultExtension: 'ts' }}

    // Original configuration
//    packages: {'app': {defaultExtension: 'js'}}
});

Webstorm IDE - " ..." people.ts peopleervice.ts, . IDE, , , .

0

, . , .

-3

Source: https://habr.com/ru/post/1614801/

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