The order in which Angular Component class attributes are initialized and constructors executed

Which line of the Component class executes first, the property initialization logic on line 13 and the breakpoint in the constructor on line 17?

Watch in the debugger:

First execute the Custom Component Factory function to create a Component instance:

Line 13 is executed first:

Notice this:

The constructor is then executed, and this.product$is available as an Observable:

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