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Understand TypeScript catchError in Angular

Paul Konstanski
on
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Last Modified: 2020-03-11
I have two recommended ways of doing an Angular API call.  

Both of them work but I am trying to understand the difference.  Any insight would be appreciated...


Here is the first option.
  public get(url: string, options?: any) {
     return this.http.get(url, options);
  }

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This is the second option.
  public get(url: string, options?: any) {
    return this.http.get(url, options)
    .pipe(map(getdata => {
      console.log("apiSvc.19 | get RETURN: ",getdata);
      return getdata;
    }),
    catchError(this.handleError('api-http-svsc.27 | API for getURL ['+url+']', options))); 
  }

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