lacolaco/angular-http-harness

Angular library for seamless migration from `$http` to `Http`

angular-http-harness

Angular library for seamless migration from $http to Http.

Install

$ npm install --save angular-http-harness

Usage:

This library provides only one API: HttpHarness.

HttpHarness is a wrapped HTTP service with a common interface. HttpHarness allows you to separate a DI process and HTTP process.

Preparation

If you use Promise in your HTTP services, you must rewrite it to use Observable.

1. Install rxjs@5.0.0
2. Replace your then and catch to subscribe.

// from
testService.get("test").then(
    resp => {
        ...
    })
    .catch(error => {
        ...
    });

// to
testService.get("test").subscribe(
    resp => {
        ...
    },
    error => {
        ...
    });

Shared code: TestService as an abstract class

Implement a service except for DI.

Use HttpHarness instead of $http or Http.

import {HttpHarness} from "angular-http-harness";

export abstract class TestService {
   private http: HttpHarness;

   constructor(http: HttpHarness) {
       this.http = http;
   }

   get(id: string): Observable<any> {
       return this.http.get(`/${id}`);
   }
}

Angular 1 code: Ng1TestService as an entry point for $http

Use fromNg1.

import {HttpHarness} from "angular-http-harness";
import {fromNg1} from "angular-http-harness/ng1";
export class Ng1TestService extends TestService {
    constructor($http: angular.IHttpService) {
        super(new HttpHarness(fromNg1($http)));
    }

    get(id: string): Observable<TestModel> {
        return super.get(id).map(resp => resp.data);
    }
}
angular.module("app").service("testService", ["$http", Ng1TestService]);

Angular 2 code: Ng2TestService as an entry point for Http

Use fromNg2

import {HttpHarness} from "angular-http-harness";
import {fromNg2} from "angular-http-harness/ng2";

@Injectable()
export class Ng2TestService extends TestService {
    constructor(_http: Http) {
        super(new HttpHarness(fromNg2(_http)));
    }

    get(id: string): Observable<TestModel> {
        return super.get(id).map(resp => resp.json());
    }
}

Compatibility

• Angular 1.5
• Angular 2.0.0-beta.12

License

MIT