Productivity Boost with Cmd. / Ctrl.

The light bulb icon means that VS Code found a possibility to refactor the code. It can be accessed by pressing Cmd+. / Ctrl+.

There are many more little quick fixes, but here are some I frequently use:

Remove braces

Add braces

Extract to a constant/function

Extract Type/Interface

Remove unused imports

Add a missing import

Add all missing imports

Convert then to async await

Bonus Productivity Tip

By pressing F2, the variable's name will be changed everywhere it is referenced.