CODEWITHSUNDEEP
angularangular2-providers
gon250
gon250

Reputation: 3545

Angular 2 - 404 provider issue

I'm having a problem while I'm trying to add a provider in my Angular 2 application. I was trying some solutions I found online but I can't figure out what is going on with my app.

Basically I'm getting the problem when I add the provider to my code:

Note: I have checked the paths are ok, and visual code doesn't provide me any error.

In the image below you can see the output o my app.

Application output enter image description here

The service I'm trying to add: (performances.service.ts)

import {Injectable} from '@angular/core';
import {Performance} from '../common/performance';
import {PERFORMANCES} from '../data/data-performances';

@Injectable()
export class PerformancesService {
    private performances : any;

    contructor(){
        this.performances = {};
    }

    getData(){
        return this.performances = PERFORMANCES;
    }
}

My app.component.ts

import {Component} from '@angular/core';
import {PerformancesService} from '../services/performances.service';

@Component({
  selector : 'my-app',
  template:
  `
    <header-fund-centre></header-fund-centre>
    <div class="container">
      <router-outlet></router-outlet>
    </div>
  `,
  providers: [PerformancesService]
})

export class AppComponent { }

systemjs.config.js

(function (global) {
  System.config({
    paths: {
      'npm:': 'node_modules/'
    },
    // map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      app: 'app',
      // angular bundles
      '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
      '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
      '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
      '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
      // other libraries
      'rxjs':                      'npm:rxjs',
      'angular-in-memory-web-api': 'npm:angular-in-memory-web-api',
      // Styling
      '@ng-bootstrap/ng-bootstrap': 'node_modules/@ng-bootstrap/ng-bootstrap/bundles/ng-bootstrap.js',
    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: '../dist/main.js',
        defaultExtension: 'js'
      },
      rxjs: {
        defaultExtension: 'js'
      },
      'angular-in-memory-web-api': {
        main: './index.js',
        defaultExtension: 'js'
      }
    }
  });
})(this);

Any idea what I'm doing wrong to have this problem adding a basic provider? Thanks!

Edited

Below you can see all the dependencies I'm currently using 

"dependencies": {
    "@angular/common": "~2.1.1",
    "@angular/compiler": "~2.1.1",
    "@angular/core": "~2.1.1",
    "@angular/forms": "~2.1.1",
    "@angular/http": "~2.1.1",
    "@angular/platform-browser": "~2.1.1",
    "@angular/platform-browser-dynamic": "~2.1.1",
    "@angular/router": "~3.1.1",
    "@angular/upgrade": "~2.1.1",
    "@ng-bootstrap/ng-bootstrap": "^1.0.0-alpha.14",
    "angular-in-memory-web-api": "~0.1.13",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "reflect-metadata": "^0.1.8",
    "rxjs": "5.0.0-beta.12",
    "systemjs": "0.19.39",
    "zone.js": "^0.6.25"
  },
  "devDependencies": {
    "@types/core-js": "^0.9.34",
    "@types/node": "^6.0.45",
    "concurrently": "^3.0.0",
    "lite-server": "^2.2.2",
    "typescript": "^2.0.3"
  }

Upvotes: 0

Views: 155

Answers (1)

Pankaj Parkar
Pankaj Parkar

Reputation: 136144

First thing I can't see .ts file in your folder, Kindly make sure your performances.service.ts is present in services folder.

Change map's map to below

map: {
    // our app is within the app folder
    app: 'dist', //<-- changed from 'app' to 'dist
    ...
}

Change your packages option to below, saying dist is package

packages: {
  dist: {
    main: 'main.js', //<-- change here, just used shorthand
    defaultExtension: 'js'
  },
  ...
}

Add PerformancesService to providers option of NgModule so that DI system will recognize the dependency while creating instance of it.

providers: [ PerformancesService ]

Upvotes: 0

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