I'm submitting a...

[X] Bug report

Current behavior

http.get<boolean>(`/api/canYouSeeMe`)
  .subscribe(x => console.log(x));

In such case if backend returns false or 0 straight in the body (without any nested object) the console print outs null. While true or 1 keeps what it is.

Yes. I know that it's strongly recommended for json APIs to return pure values wrapped into some object, but still.. it's not forbidden and seems like javascript supports parsing such values.

And that's happening because of this line:

Obviously:

this.body = true || null; // true
this.body = false || null; // null
this.body = 0 || null; // null

Expected behavior

Keep the falsy (false, 0) value unchanged.

Current workaround

Set the responseType to text and parse it for yourself.

Environment

Angular versions: 4.x, 5.0.0-rc.3