Angular HttpClient return expecting observable rather than observable

Question

I\'m getting a compilation error on the return type when using HttpClient. In my function GetPortfolio, I\'m expecting the GET call to return the j

Answer 1

It's strange, don't give error if you write

GetPortfolio(portfolioId: string): Observable {
    return this.http.get('....', {
        headers: new HttpHeaders(
            {
                'Content-Type': 'application/json',
            })   
    });
}

It's look like, the compiler expect an object with the properites headers,params,observe..., but as your object have no type, the compiler can accept it

even you can do

headers: HttpHeaders = new HttpHeaders({
        'Content-Type': 'application/json',
    })
GetPortfolio(portfolioId: string): Observable {
        return this.http.get('...', {
            headers: this.headers
        })
    }