I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ x ] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

In the following source code for HttpClient:

The expression appears to evaluate to true always, since the result of a double-exclamation on the LHS (!!options.headers) will be boolean (true | false), such that it is always !== undefined.

Expected behavior

The expression could evaluate to false, to match the intention.

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

The intent is unclear, given that the expression appears to always evaluate to true.

Environment

Angular version: X.Y.Z
N/A

Browser:
N/A
 
For Tooling issues:
N/A

Others:
N/A