javascriptScope errorMedium

Constant used one line before it exists

Time: 0:00

What it should do

priceWithFee(base) should add a flat fee of 5 to the base price, so priceWithFee(10) returns 15.

What goes wrong

priceWithFee(10) throws "Cannot access 'fee' before initialization".

Hints

This is a scope and closure bugs bug

Every callback reports the last value, a counter never increments, UnboundLocalError on a variable you can see.